Amazon Aurora PostgreSQL updates - Amazon Aurora
PostgreSQL 17 versionsPostgreSQL 16 versionsPostgreSQL 15 versionsPostgreSQL 14 versionsPostgreSQL 13 versions (includes some deprecated versions)PostgreSQL 12 versions (includes some deprecated versions)PostgreSQL 11 versions (includes some deprecated versions)PostgreSQL 10 versions (Deprecated)PostgreSQL 9.6 versions (Deprecated)

Amazon Aurora PostgreSQL updates

Following, you can find information about versions of the Amazon Aurora PostgreSQL-Compatible Edition database engine that have been released for Amazon Aurora.

To determine the version number of your Aurora PostgreSQL database, see Identifying versions of Amazon Aurora PostgreSQL in the Amazon Aurora User Guide.

For information about extensions and modules, see Extension versions for Amazon Aurora PostgreSQL.

For information about Amazon Aurora available releases, policies, and time lines, see How long Amazon Aurora major versions remain available in the Amazon Aurora User Guide. For more information about support and other policies for Amazon Aurora see Amazon RDS FAQs.

To determine which Aurora PostgreSQL DB engine versions are available in an AWS Region, use the describe-db-engine-versions AWS CLI command as shown following.

aws rds describe-db-engine-versions --engine aurora-postgresql --query '*[].[EngineVersion]' --output text --region aws-region

For a list of AWS Regions, see Aurora PostgreSQL Region availability in the Amazon Aurora User Guide.

PostgreSQL 17 versions

Version updates

PostgreSQL 17.0

This release of Aurora PostgreSQL is compatible with PostgreSQL 17.0. For more information about the improvements in PostgreSQL 17.0, see PostgreSQL release 17.0.

To learn more on how to work with Database preview environment, see Working with the database preview environment.

Aurora PostgreSQL 17.0 in the Amazon RDS Preview environment, November 20, 2024

This is preview documentation for Amazon Aurora PostgreSQL version 17.0. It is subject to change.

General enhancements

  • Reduced commit latency when I/O optimized is enabled.

Unsupported features in the preview version of Aurora PostgreSQL 17.0

  • Logical decoding on Aurora Read Replicas.

  • Failover control within a database cluster.

  • pg_createsubscriber on Aurora Read Replicas.

  • Aurora PostgreSQL query plan management.

  • Aurora PostgreSQL local write forwarding.

Important

The Aurora PostgreSQL 17.0 preview release includes fixes for recent PostgreSQL CVEs. These fixes may affect your login roles.

For details on the CVEs, see the PostgreSQL release announcement.

For information about the potential impact on login roles, refer to this PostgreSQL mailing list post.

PostgreSQL 16 versions

Migrating to Aurora PostgreSQL 16

The following minumum extension versions are required for major version upgrade to Aurora PostgreSQL 16:

  • PostGIS version 3.1

  • PgRouting version 3.0.5

  • Rdkit version 4.2

For more information on migration, see Migration to Version 16 and Migration to Version 16.1.

For information about supported extensions versions for each Aurora PostgreSQL version, see Extension versions for Amazon Aurora PostgreSQL.

To upgrade your Aurora PostgreSQL DB cluster including upgrading your extensions, see Upgrading PostgreSQL extensions.

Unsupported Features

  • Aurora PostgreSQL 16 versions doesn't currently support logical decoding on Aurora Read Replicas.

Differences between PostgreSQL 16 and Aurora PostgreSQL 16

In Aurora PostgreSQL 16 versions, the newly introduced pg_stat_io view has two additional I/O contexts:

  • index: I/O operations performed during index creation.

  • walreplay: I/O operations performed by the wal replay process on Aurora read replicas.

The following backend types and I/O contexts are not applicable to Aurora read replicas:

  • autovacuum launcher

  • autovacuum worker

  • bulkwrite

  • index

  • vacuum

In addition, Aurora PostgreSQL doesn't support writebacks and sync operations since data is persisted to Aurora storage.

PostgreSQL 16.4

This release of Aurora PostgreSQL is compatible with PostgreSQL 16.4. For more information about the improvements in PostgreSQL 16.4, see PostgreSQL release 16.4.

Aurora PostgreSQL 16.4, September 30, 2024

New features.

  • Introduced a new fast failover feature to reduce database downtime during the planned extension failover events with fast storage metadata initialization and fast buffer cache recovery.

  • Introduced an optimization to reduce Zero Downtime Patching (ZDP) quiet point duration to 1 second.

Critical stability enhancements.

  • Fixed a rare bug causing missing commit timestamps for subtransactions.

High priority enhancements.

  • Fixed issues where the replication of vacuum operations may cause a restart when handling conflicts with user queries.

  • Fixed an issue where deleting a large range of keys from a BTree index could cause concurrent scans to crash.

General enhancements.

  • Enabled support for FIPS-validated cryptography, a fully owned AWS implementation. For more information, see AWS-LC is now FIPS 140-3 certified on AWS Security Blog.

  • Improvements to database startup time during initialization and engine upgrades.

  • Fixed an issue during ZDP which causes some connections to be terminated due to long transferring time. A new ZDP metric in postgresql.log called ZD_SOCKET_TRANSFER_CONN_DROPPED represents these dropped connections.

  • Improved reader availability for Aurora Replicas when using system administration functions.

  • Fixed an in-memory two-phase commit (2PC) metadata caching issue that caused out-of-memory error on Aurora read replicas replicating from RDS PostgreSQL source instances.

  • Introduced a new function pgadmap_get_set_mapping_cmd() in the pg_ad_mapping extension to display commands required to recreate existing Active directory security group to Aurora PostgreSQL database role mappings.

  • Fixed an issue in storage metadata initialization that can cause prolonged database startup time.

  • Fixed an issue that will prevent reclaiming Aurora storage space during major version upgrade.

  • Fixed an issue that prevents ZDP from completing successfully on Optimized Reads-enabled instances.

Additional improvements and enhancements.

  • Updated the following extensions:

    • pgvector extension to version 0.7.3.

    • mysql_fdw extension to version REL-2_9_2.

    • orafce extension to version 4.10.3.

    • pgTAP extension to version 1.3.3.

    • pg_cron extension to version 1.6.3.

    • RDKit extension to version 4.5 (Release 2024_03_5).

    • wal2json extension to version 2.6.

    • pg_ad_mapping extension to version 1.0.

    • HypoPG extension to version 1.4.1.

PostgreSQL 16.3

This release of Aurora PostgreSQL is compatible with PostgreSQL 16.3. For more information about the improvements in PostgreSQL 16.3, see PostgreSQL release 16.3.

Aurora PostgreSQL 16.3, August 8, 2024

New features

  • Aurora Serverless v2 now applies pending database parameter max_connections changes during upgrades. The Serverless V2 capacity changes result in pending max_connections changes. As many ZDP supported connections as allowed by max_connections will be preserved during upgrades.

  • Introduced a feature to improve database start up time through faster buffer cache initialization during restarts and database upgrades.

  • Minor version and patch upgrades may now complete faster in some cases.

  • Reduced Aurora Serverless v2 scale up and scale down time in the presence of data intensive workloads or long running queries and busy or unresponsive connections.

  • Added per-query memory usage information to aurora_stat_statements and aurora_stat_plans. For more information, see aurora_stat_statements.

  • Performance enhancements that improve write throughput for 8xl and larger instances running on IO Optimized configuration.

Critical stability enhancements

  • Fixed a pg_repack issue that would incorrectly allow two vacuum processes to operate concurrently on the same table.

High priority enhancements

  • Fixed an issue which leads to cancellation of long-running queries on Global Database replica instances.

General enhancements

  • Improved Aurora PostgreSQL performance for AI workloads using pgvector.

  • Fixed cumulative statistics data reset after manual reboot.

  • Improvements to the replay performance of the Aurora WAL replay process on read replica instances.

  • Fixed issue where minor version upgrades with ZDP would fail in some cases resulting in longer upgrade times.

  • Improved replay performance of vacuum operations on Aurora Replica instances.

  • Fixed an issue which can cause logical replication to terminate when attempting to access relation metadata.

  • Fixed a bug where JDBC connections may not be preserved during ZDP enabled upgrades.

  • Improvement to reduce postgres private memory fragmentation.

  • Fixed an issue that caused two-phase commit files to remain, preventing proper cleanup.

  • Improved memory handling while processing two phase commit files.

  • Fixed an issue resulting in degraded performance during query planning on Aurora replicas.

  • Improved availability of Aurora read replicas.

  • Fixed an issue where server might restart if background worker tries to spawn parallel workers.

  • Fixed an issue where the instance may restart when logically applying changes from a remote server when under resource constraints.

  • Fixed an issue with database-wide and statement-level blk_read_time metric.

Additional improvements and enhancements

  • Updated the following extensions:

    • orafce extension to version 4.9.4.

    • pg_cron extension to version 1.6.2.

    • pg_partman extension to version 5.1.0.

    • pg_repack extension to version 1.5.0.

    • pg_tle to version 1.4.0.

    • pg_vector extension to version 0.7.0.

    • pgrouting extension to version 3.6.2.

    • pgTap extension to version 1.3.2.

    • PostGIS extension to version 3.4.2.

    • RDKit extension to version 2024_03_1.

PostgreSQL 16.2

This release of Aurora PostgreSQL is compatible with PostgreSQL 16.2. For more information about the improvements in PostgreSQL 16.2, see PostgreSQL release 16.2.

Aurora PostgreSQL 16.2.2, June 20, 2024

General enhancements

  • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

High priority enhancements

  • Fixed a crash with execution of pltsql user defined functions.

  • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

Critical stability enhancements

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

  • Fixed an issue with background worker where it may crash when executed in parallel worker context.

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

  • Fixed issues in how two-phase commit files are handled.

Aurora PostgreSQL 16.2.1, April 29, 2024

New features

  • Added resource usage summary to pg_dump.

  • Added function overloading for aurora_stat_statements(bool showtext) and aurora_stat_plans(bool showtext).

General enhancements

  • Fixed multiple minor version upgrade issues to improve connection preservation with zero-downtime patching.

  • Reduced database boot time due to improved initialization time for large volumes.

  • Introduced faster COPY operations by reducing contention on the relation extension lock and proactively extending relations.

  • Improvements to reduce replication lag by intelligently skipping the replay of certain log records, thereby reducing the replay load.

  • Fixed an issue during recovery conflict on a read node which, in rare cases, could cause brief unavailability.

  • Fixed an issue where a database would fail to startup during a major version upgrade patch, in rare scenarios.

  • Improved availability of read replicas by allowing recovery from replication errors in more situations.

  • Fixed an issue resulting in a deadlock when a logical replication table synchronization operation fails.

  • Fixed a logical replication decoding issue that fails to process catalog modifying changes after spilling to storage if there was a concurrent aborted sub-transaction.

  • Improved log record validation before it is written to storage.

  • Fixed an issue that would result in sessions incorrectly reporting ClientRead wait events after a zero-downtime patching event.

  • Fixed an ambiguous function definition of aws_s3.query_export_to_s3 when upgrading the aws_s3 extension from version 1.1 to 1.2.

High priority enhancements

  • Fixed an issue related to resuming a logical replication slot where, in rare cases, it could cause the slot to become stuck.

  • Fixed an issue that would result in a restart when creating a database in a tablespace.

  • Fixed an issue related to incorrect logical replication error handling to improve DB stability.

Critical stability enhancements

  • Fixed an issue related to replication origins that in rare cases might result in longer recovery time and impact availability.

  • Fixed an issue that in rare cases may cause transactions to be partially replicated by newly created logical replication slots. For more information, see Potential data loss due to race condition during logical replication slot creation.

  • Fixed an issue where pg_stat_statements can cause zero-downtime patching to fail.

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

Additional improvements and enhancements

  • Updated the following extensions:

    • pg_tle extension to version 1.3.4.

    • PLV8 extension to version 3.1.10.

    • RDKit Cartridge to version Release_2023_09_4.

  • New GUC Parameters has been added

    • pgtle.clientauth_databases_to_skip

    • pgtle.clientauth_db_name

    • pgtle.clientauth_num_parallel_workers

    • pgtle.clientauth_users_to_skip

    • pgtle.enable_clientauth

    • pgtle.passcheck_db_name

PostgreSQL 16.1

This release of Aurora PostgreSQL is compatible with PostgreSQL 16.1. For more information about the improvements in PostgreSQL 16.1, see PostgreSQL release 16.1.

Aurora PostgreSQL 16.1.4, June 24, 2024

General enhancements

  • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

High priority enhancements

  • Fixed an issue with Parallel query execution in which a backend may get into indefinite hang in certain cases.

  • Fixed a crash with execution of pltsql user defined functions.

  • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

Critical stability enhancements

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

Aurora PostgreSQL 16.1.3, March 13, 2024

General enhancements

  • Fixed a performance degradation issue in PLV8 extension.

Aurora PostgreSQL 16.1.2, February 22, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue where pg_stat_statements can block minor version upgrade during ZDP.

  • Fixed an issue where a logical replication slot would no longer emit changes due to an overly strict data consistency check.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 16.1, January 31, 2024

New features

  • Added support for the HypoPG extension at version 1.4.0.

  • Added support for the h3-pg extension and the h3-postgis extension at version 4.1.3.

  • Added support for aurora_compute_plan_id parameter which is turned on by default in an Aurora PostgreSQL DB Cluster and DB Parameter Group. For more information, see Monitoring query execution plans for Aurora PostgreSQL.

  • The rds.rds_superuser_reserved_connections parameter has been deprecated in Aurora PostgreSQL version 16. The reserved_connections parameter should be utilized to reserve the number of connection slots. The reserved_connections parameter sets the number of connection slots reserved for roles with the pg_use_reserved_connections privileges. rds_superuser is a member of the pg_use_reserved_connections role by default. For more information, see the PostgreSQL documentation reserved connections.

General enhancements

  • Deprecated support for ssl protocols: TLSv1.0 and TLSv1.1.

Additional improvements and enhancements

Updated the following extensions:

  • postgis to version 3.4.0

  • PgLogical to version 2.4.4

  • PgCron to version 1.6

  • orafce to version 4.6.0

  • pg_hint_plan to version 1.6.0

  • plv8 to version 3.1.8

  • oracle_fdw to version 2.6.0

  • MySQL_FDW to version 2.9.1

  • Hll to version 2.18

  • RDKit to version 4.4

  • aws_s3 to version 1.2

  • prefix to version 1.2.10

  • pg_similarity to version 1.0

  • pgdam to version 1.7

  • pg_proctab to version 0.0.10

  • pg_tle to version 1.2.0

  • pg_vector to version 0.5.1

  • PgAudit to version 16.0

  • plprofiler to version 4.2.4

  • pg_partman to version 4.7.3

  • pgTAP to version 1.3.0

For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 16.

PostgreSQL 15 versions

PostgreSQL 15.8

This release of Aurora PostgreSQL is compatible with PostgreSQL 15.8. For more information about the improvements in PostgreSQL 15.8, see PostgreSQL release 15.8.

Aurora PostgreSQL 15.8, September 30, 2024

New features for 15.8.

  • Introduced a new fast failover feature to reduce database downtime during the planned extension failover events with fast storage metadata initialization and fast buffer cache recovery.

  • Introduced an optimization to reduce Zero Downtime Patching (ZDP) quiet point duration to 1 second.

Critical stability enhancements for 15.8.

  • Fixed a rare bug causing missing commit timestamps for subtransactions.

High priority enhancements for 15.8.

  • Fixed issues where the replication of vacuum operations may cause a restart when handling conflicts with user queries.

  • Fixed an issue where deleting a large range of keys from a BTree index could cause concurrent scans to crash.

General enhancements for 15.8.

  • Enabled support for FIPS-validated cryptography, a fully owned AWS implementation. For more information, see AWS-LC is now FIPS 140-3 certified on AWS Security Blog.

  • Improvements to database startup time during initialization and engine upgrades.

  • Fixed an issue that prevented the inclusion of the pg_bigm extension in shared_preload_libraries.

  • Fixed an issue during ZDP which causes some connections to be terminated due to long transfer time. A new ZDP metric in postgresql.log called ZD_SOCKET_TRANSFER_CONN_DROPPED represents these dropped connections.

  • Improved reader availability for Aurora Replicas when using system administration functions.

  • Fixed an in-memory two-phase commit (2PC) metadata caching issue that caused out-of-memory errors on Aurora read replicas replicating from RDS PostgreSQL source instances.

  • Introduced a new function pgadmap_get_set_mapping_cmd() in the pg_ad_mapping extension to display commands required to recreate existing Active directory security group to Aurora PostgreSQL database role mappings.

  • Fixed an issue in storage metadata initialization that can cause prolonged database startup time.

  • Fixed an issue that will prevent reclaiming Aurora storage space during major version upgrade.

  • Fixed an issue that prevents ZDP from completing successfully on Optimized Reads-enabled instances.

Additional improvements and enhancements for 15.8.

  • Updated the following extensions:

    • pgvector extension to version 0.7.3.

    • mysql_fdw extension to version REL-2_9_2.

    • orafce extension to version 4.10.3.

    • pgTAP extension to version 1.3.3.

    • pg_cron extension to version 1.6.3.

    • RDKit extension to version 4.5 (Release 2024_03_5).

    • wal2json extension to version 2.6.

    • pg_ad_mapping extension to version 1.0.

    • HypoPG extension to version 1.4.1.

PostgreSQL 15.7

This release of Aurora PostgreSQL is compatible with PostgreSQL 15.7. For more information about the improvements in PostgreSQL 15.7, see PostgreSQL release 15.7.

Aurora PostgreSQL 15.7, August 8, 2024

New features

  • Aurora Serverless v2 now applies pending database parameter max_connections changes during upgrades. The Serverless V2 capacity changes result in pending max_connections changes. As many ZDP supported connections as allowed by max_connections will be preserved during upgrades.

  • Introduced a feature to improve database start up time through faster buffer cache initialization during restarts and database upgrades.

  • Minor version and patch upgrades may now complete faster in some cases.

  • Reduced Aurora Serverless v2 scale up and scale down time in the presence of data intensive workloads or long running queries and busy or unresponsive connections.

  • Added per-query memory usage information to aurora_stat_statements and aurora_stat_plans. For more information, see aurora_stat_statements.

Critical stability enhancements

  • Fixed a pg_repack issue that would incorrectly allow two vacuum processes to operate concurrently on the same table.

High priority enhancements

  • Fixed an issue which leads to cancellation of long-running queries on Global Database replica instances.

General enhancements

  • Improved Aurora PostgreSQL performance for generative AI workloads using pgvector.

  • Fixed cumulative statistics data reset after manual reboot.

  • Fixed issue where minor version upgrades with ZDP would fail in some cases resulting in longer upgrade times.

  • Improved replay performance of vacuum operations on Aurora Replica instances.

  • Fixed a bug where JDBC connections may not be preserved during ZDP enabled upgrades.

  • Improvement to reduce postgres private memory fragmentation.

  • Fixed an issue that caused two-phase commit files to remain, preventing proper cleanup.

  • Improved memory handling while processing two phase commit files.

  • Fixed an issue resulting in degraded performance during query planning on Aurora replicas.

  • Improved availability of Aurora read replicas.

  • Fixed cumulative statistics data reset after manual reboot.

  • Fixed an issue where server might restart if background worker tries to spawn parallel workers.

  • Fixed an issue where the instance may restart when logically applying changes from a remote server when under resource constraints.

Additional improvements and enhancements

  • Updated the following extensions:

    • orafce extension to version 4.9.4.

    • pg_cron extension to version 1.6.2.

    • pg_partman extension to version 5.1.0.

    • pg_repack extension to version 1.5.0.

    • pg_tle to version 1.4.0.

    • pg_vector extension to version 0.7.0.

    • pgrouting extension to version 3.6.2.

    • pgTap extension to version 1.3.2.

    • PostGIS extension to version 3.4.2.

    • RDKit extension to version 2024_03_1.

PostgreSQL 15.6

This release of Aurora PostgreSQL is compatible with PostgreSQL 15.6. For more information about the improvements in PostgreSQL 15.6, see PostgreSQL release 15.6.

Aurora PostgreSQL 15.6.2, June 20, 2024

General enhancements

  • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

High priority enhancements

  • Fixed a crash with execution of pltsql user defined functions.

  • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

Critical stability enhancements

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

  • Fixed an issue with background worker where it may crash when executed in parallel worker context.

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

  • Fixed issues in how two-phase commit files are handled.

Aurora PostgreSQL 15.6.1, April 29, 2024

New features

  • Added resource usage summary to pg_dump.

  • Added function overloading for aurora_stat_statements(bool showtext) and aurora_stat_plans(bool showtext).

General enhancements

  • Fixed multiple minor version upgrade issues to improve connection preservation with zero-downtime patching.

  • Reduced database boot time due to improved initialization time for large volumes.

  • Introduced faster COPY operations by reducing contention on the relation extension lock and proactively extending relations.

  • Improvements to reduce replication lag by intelligently skipping the replay of certain log records, thereby reducing the replay load.

  • Fixed an issue during recovery conflict on a read node which, in rare cases, could cause brief unavailability.

  • Fixed an issue where a database would fail to startup during a major version upgrade patch, in rare scenarios.

  • Improved availability of read replicas by allowing recovery from replication errors in more situations.

  • Fixed an issue that would cause zero-downtime patching to timeout.

  • Fixed an issue resulting in a deadlock when a logical replication table synchronization operation fails.

  • Fixed a logical replication decoding issue that fails to process catalog modifying changes after spilling to storage if there was a concurrent aborted sub-transaction.

  • Improved log record validation before it is written to storage.

  • Fixed an issue that would result in sessions incorrectly reporting ClientRead wait events after a zero-downtime patching event.

  • Fixed an ambiguous function definition of aws_s3.query_export_to_s3 when upgrading the aws_s3 extension from version 1.1 to 1.2.

High priority enhancements

  • Fixed an issue related to resuming a logical replication slot where, in rare cases, it could cause the slot to become stuck.

  • Fixed an issue that would result in a restart when creating a database in a tablespace.

  • Fixed an issue related to incorrect logical replication error handling to improve DB stability.

Critical stability enhancements

  • Fixed an issue related to replication origins that in rare cases might result in longer recovery time and impact availability.

  • Fixed an issue that in rare cases may cause transactions to be partially replicated by newly created logical replication slots. For more information, see Potential data loss due to race condition during logical replication slot creation.

  • Fixed an issue where pg_stat_statements can cause zero-downtime patching to fail.

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

Additional improvements and enhancements

  • Updated the following extensions:

    • pg_tle extension to version 1.3.4.

    • PLV8 extension to version 3.1.10.

    • RDKit Cartridge to version Release_2023_09_4.

  • New GUC Parameters has been added

    • pgtle.clientauth_databases_to_skip

    • pgtle.clientauth_db_name

    • pgtle.clientauth_num_parallel_workers

    • pgtle.clientauth_users_to_skip

    • pgtle.enable_clientauth

    • pgtle.passcheck_db_name

PostgreSQL 15.5

This release of Aurora PostgreSQL is compatible with PostgreSQL 15.5. For more information about the improvements in PostgreSQL 15.5, see PostgreSQL release 15.5.

Aurora PostgreSQL 15.5.4, June 24, 2024

General enhancements

  • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

High priority enhancements

  • Fixed an issue with Parallel query execution in which a backend may get into indefinite hang in certain cases.

  • Fixed a crash with execution of pltsql user defined functions.

  • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

Critical stability enhancements

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

Aurora PostgreSQL 15.5.3, March 13, 2024

General enhancements

  • Fixed a performance degradation issue in PLV8 extension.

Aurora PostgreSQL 15.5.2, February 22, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue where pg_stat_statements can block minor version upgrade during ZDP.

  • Fixed an issue where a logical replication slot would no longer emit changes due to an overly strict data consistency check.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 15.5.0, December 21, 2023

Following the announcement of updates to the PostgreSQL database by the open source community, we have updated Amazon Aurora PostgreSQL-Compatible Edition to support PostgreSQL versions 15.5, 14.10, 13.13, and 12.17. These releases contain product improvements and bug fixes made by the PostgreSQL community, along with Aurora-specific improvements. New features and improvements for Babelfish for Aurora PostgreSQL version 3.4 are also included.

Refer to the Aurora version policy to help you to decide how often to upgrade and how to plan your upgrade process. As a reminder, if you are running any version of Amazon Aurora PostgreSQL version 11, you must upgrade to a newer major version by February 29, 2024.

New features

  • Amazon Bedrock integration – By using the Amazon Aurora machine learning extension with your Aurora PostgreSQLDB cluster, you can now use Amazon Bedrock foundational AI models.

  • Using Active Directory security groups for Aurora PostgreSQL access control – Add group role authentication support using AWS Directory Service for Microsoft Active Directory with the new pg_ad_mapping extension.

  • Delegated Extension Support – This feature allows delegating extension management to lower privileged user with the new rds_extension role.

  • Added support for aurora_compute_plan_id parameter which is turned on by default in an Aurora PostgreSQL DB Cluster and DB Parameter Group. For more information, see Monitoring query execution plans for Aurora PostgreSQL.

  • Query Plan Management (QPM) enhancements:

    • Plan outlines will be updated to the latest format version as part of the update_plan_hash action for apg_plan_mgmt.validate_plans().

    • Support was added for parallel append enforcement as a part of parallel query enforcement.

  • Added support for the HypoPG extension at version 1.4.0.

  • Added support for the h3-pg extension and the h3-postgis extension at version 4.1.3.

High priority enhancements

  • Fixed an issue which may cause a reboot when logically replicating changes in the presence of concurrently-running DDL or canceled sub-transactions

  • Fixed an issue which may cause an Aurora replica to reboot when reading a page which was modified during WAL replay

  • Fixed an issue where if a specific volume metadata is invalid on a source cluster, it will remain invalid on a cloned cluster. Since the clone cluster uses a new volume, the metadata will now be recreated.

  • Fixed a bug that may cause an engine crash during zero-downtime patching (ZDP)

  • Introduced a new parameter, rds.enable_memory_management, which is used to enable and disable the improved memory management feature.

  • Improved index scan query performance by skipping unnecessary B-tree page reads when a composite index is used with large data sets.

  • Backported fixes for the following PostgreSQL community security issues:

General enhancements

  • Fixed an issue which caused the AuroraGlobalDBRPOLag metric to be zero when the rds.global_db_rpo parameter was not set.

  • Fixed an issue which may cause an Aurora replica to reboot while reconnecting with the writer DB instance.

  • Added support for the rdkit.morgan_fp_size parameter

  • rds-superuser can now run the pg_stat_reset_slru function

  • Fixed an issue where MultiXact SLRU accesses were not credited to the correct pg_stat_slru category.

  • Fixed an issue which may cause unused WAL segements to not be properly removed

  • Fixed an issue where pglogical does not correctly pass-through replication origin data when using the binary output format

  • rds_superuser can now execute ALTER COLLATION to refresh the collation version of a locale in the catalog.

  • Fixed a crash in dblink and postgres_fdw extensions due to invalid connections

  • Fixed an issue where the aws_s3 extension can import HTTP error responses into the table

  • Fixed an issue which may cause an Aurora Replica instance with Optimized Reads to reboot while reconnecting with the writer DB instance.

  • Fixed an issue which may cause an Aurora replica with Optimized Reads to reboot while caching a page to tiered cache.

Additional improvements and enhancements

  • Updated the following extensions:

    • mysql_fdw to version 2.9.1

    • Oracle_fdw to version 2.6.0

    • Orafce to version 4.6.0

    • pg_cron to version 1.6.0

    • pg_hint_plan to version 1.5.1

    • pg_proctab to version 0.0.10

    • pg_tle to version 1.2.0

    • plv8 to version 3.1.8

    • PostGIS to version 3.4.0

    • prefix to version 1.2.10

    • RDKit to version 4.4.0 (Release_2023_09_1)

For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 15.

PostgreSQL 15.4

This release of Aurora PostgreSQL is compatible with PostgreSQL 15.4. For more information about the improvements in PostgreSQL 15.4, see PostgreSQL release 15.4.

Aurora PostgreSQL 15.4.7, June 25, 2024

General enhancements

  • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

High priority enhancements

  • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

Critical stability enhancements

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

Aurora PostgreSQL 15.4.6, March 13, 2024

General enhancements

  • Fixed a performance degradation issue in PLV8 extension.

Aurora PostgreSQL 15.4.5, Febraury 22, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue where pg_stat_statements can block minor version upgrade during ZDP.

  • Fixed an issue where a logical replication slot would no longer emit changes due to an overly strict data consistency check.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 15.4.3, December 15, 2023

High priority enhancements

  • Fixed an issue which may cause a reboot when logically replicating changes in the presence of concurrently-running DDL or canceled sub-transactions

Aurora PostgreSQL 15.4.2, December 13, 2023

Critical stability enhancements
High priority enhancements

  • Improved the index scan query performance by skipping unnecessary B-tree page reads when a composite index is used with large data sets

  • Fixed an issue with index scan queries that, in rare cases, could lead to database instance restarts

General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 15.4.1, November 09, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

General enhancements

  • Fixed an issue that could result in read replica lag due to stale metadata

  • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

Aurora PostgreSQL 15.4.0, October 24, 2023

New features

  • Added support for mysql_fdw version 2.9.0

  • Added support in the aws_s3 extension for exporting to an S3 bucket encrypted with a customer managed KMS key

  • Improved the availability of Aurora replicas in the global DB secondary clusters

  • Added support for query plan capture on Aurora replicas

  • Added support for query plan enforcement with materialize nodes

  • Added support for query plan enforcement with parallel query operators

  • Query plans under a given cost threshold will not be captured

High priority enhancements

  • Fixed an issue which could cause the database to fail to start up during database recovery

  • Included optimizations to improve the time to scale up in Aurora Serverless v2 instances

General enhancements

  • Fixed an issue in the aws_s3 extension where the number of rows exported is incorrectly reported when the total number exceeds 2 billion

  • Provided options to configure timeouts in the aws_s3 extension. By setting the following parameters (GUCs), customers will now be able to change the timeout thresholds for imports from S3:

    • aws_s3.curlopt_low_speed_limit

    • aws_s3.curlopt_low_speed_time

  • Prevented instance creation failure in some edge cases

  • Improved the performance of replay of commit transaction operations on Aurora replicas

  • Fixed an issue where, in rare cases, an import from the aws_s3 extension fails to complete

  • Updated the GEOS library for PostGIS to version 3.12.0

  • Improved Aurora Serverless v2 database memory scaling which reduces the overall database instance scale time

  • Added the WAIT_EVENT_Aurora_CLUSTER_CACHE_MANAGER_SENDER wait event to denote wait times in the cluster cache manager sender

  • Added the WAIT_EVENT_Aurora_SERVERLESS_MONITORING_MAIN wait event to denote wait times in Aurora Serverless resource monitoring

  • Improved the handling of invalid non-persisted metadata during reads from storage on read replicas

  • Fixed an issue where the database may crash during the start of a logical replication slot

  • Increased the limit for pg_cron cron.max_running_jobs parameter from 100 to 1000

  • The pgAudit pgaudit.log_statement parameter is now modifiable

  • Fixed a bug in CREATE TABLE command to handle table name starting with '#' correctly.

Additional improvements and enhancements

  • Updated the following extensions:

    • orafce to version 4.3.0

    • pg_logical to version 2.4.3

    • pg_tle to version 1.1.1

    • pgvector to version 0.5.0

    • plv8 to version 3.1.6

    • PostGIS to version 3.3.3

    • RDKit to version 4.3

For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 15.

PostgreSQL 15.3

This release of Aurora PostgreSQL is compatible with PostgreSQL 15.3. For more information about the improvements in PostgreSQL 15.3, see PostgreSQL release 15.3.

Aurora PostgreSQL 15.3.6, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 15.3.5, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue that would cause a logical replication slot to transiently error out in the presence of aborted subtransactions and DDL.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 15.3.4, December 14, 2023

Critical stability enhancements
High priority enhancements

  • Improved the index scan query performance by skipping unnecessary B-tree page reads when a composite index is used with large data sets

  • Fixed an issue with index scan queries that, in rare cases, could lead to database instance restarts

General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 15.3.3, November 14, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

General enhancements

  • Fixed an issue that could result in read replica lag due to stale metadata

  • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

Aurora PostgreSQL 15.3.2, October 4, 2023

High priority stability enhancements
High priority enhancements

  • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads

  • Fixed an issue which can cause vacuum operations to become blocked after the restart of an Aurora replica

  • Fixed an issue that would cause a crash when executing the COPY FROM command

  • Fixed an issue that would cause high CPU usage and prevent new connections

  • Fixed an issue where UPDATE and DELETE from a table with foreign key could fail unexpectedly with "ERROR: 40001: could not serialize access due to concurrent update when using Serializable snapshot"

General enhancements

  • Introduced diagnostics for the transient metadata used for I/O

  • Fixed an issue that prevented the enablement of improved memory management in certain scenarios in Aurora PostgreSQL 15.3

Aurora PostgreSQL 15.3.0, July 13, 2023

Following the announcement of updates to the PostgreSQL database by the open source community, we have updated Amazon Aurora PostgreSQL-Compatible Edition to support PostgreSQL versions 15.3, 14.8, 13.11, 12.15, and 11.20. These releases contains product improvements and bug fixes made by the PostgreSQL community, along with Aurora-specific improvements. The releases also contain new features and improvements for Babelfish for Aurora PostgreSQL version 3.2, and improved support for AWS Database Migration Service. Refer to the Amazon Aurora versions to help you to decide how often to upgrade and how to plan your upgrade process. As a reminder, if you are running any version of Amazon Aurora PostgreSQL 11, you must upgrade to a newer major version by February 29, 2024.

New features

  • This release contains memory management improvements which increase database stability and availability by proactively preventing issues caused by insufficient memory. For more information, see Improved memory management in Aurora PostgreSQL.

  • Added support for the pgvector extension version 0.4.1.

High priority enhancements

  • Fixed an issue with the subtransaction metadata handling when performing a survivable reader reconnect

  • Fixed an issue during ZDP which is related to the extension environment variables

  • Addressed a transient error during logical replication that caused a process to incorrectly calculate that it had encountered an unexpected page

  • Fixed an issue which causes a period of unavailability due to a partially created replication origin state file

General enhancements

  • Addressed an issue where the computing query identifier displayed a warning, "WARNING: unrecognized node type: 378"

  • Addressed an issue that caused the initial data sync of a relation to become blocked due to the premature removal of the logical replication slot on the publisher

  • Added a new function, aurora_stat_memctx_usage(), to show backend memory use breakdown at a Postgres memory context level

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters (GUCs), customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms

    • aws_lambda.request_timeout_ms

  • Fixed an issue with the calculation of the AuroraReplicaLag metric

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots

  • Further reduced the database downtime during ZDP

  • Fixed a bug which can cause unavailability during ZDP

  • Fixed an issue which caused pg_ls_waldir() to return "ERROR: could not stat file"

  • Added support for TLS 1.3 with ciphers TLS_AES_128_GCM_SHA256 and TLS_AES_256_GCM_SHA384

  • Addressed an issue that blocked a major version upgrade on the Aurora replica of an RDS for PostgreSQL DB instance

  • Fixed an issue that could prevent scaling in Aurora Serverless v2 instances

  • Fixed an issue in logical replication which, in rare cases, can cause a period of unavailability due to the incorrect subtransaction metadata

  • Fixed an issue in the pg_vector extension where, in rare cases, infinite or NAN values caused a crash during the index creation

  • Fixed an issue to improve the performance

  • Upgraded GEOS to version 3.11.2

  • Upgraded pg_cron to version 1.5

  • Upgraded pg_partman to version 4.7.3

  • Upgraded pg_tle to version 1.0.3

  • Upgraded plv8 to version 3.1.6

PostgreSQL 15.2

This release of Aurora PostgreSQL is compatible with PostgreSQL 15.2. For more information about the improvements in PostgreSQL 15.2, see PostgreSQL release 15.2.

Aurora PostgreSQL 15.2.8, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 15.2.7, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue that would cause a logical replication slot to transiently error out in the presence of aborted subtransactions and DDL.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 15.2.6, December 15, 2023

Critical stability enhancements
High priority enhancements

  • Improved the index scan query performance by skipping unnecessary B-tree page reads when a composite index is used with large data sets

  • Fixed an issue with index scan queries that, in rare cases, could lead to database instance restarts

General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 15.2.5, November 14, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

General enhancements

  • Fixed an issue that could result in read replica lag due to stale metadata

  • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

Aurora PostgreSQL 15.2.4, October 5, 2023

High priority stability enhancements
High priority enhancements

  • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads

  • Fixed an issue which can cause vacuum operations to become blocked after the restart of an Aurora replica

  • Fixed an issue that would cause high CPU usage and prevent new connections

General enhancements

  • Introduced diagnostics for the transient metadata used for I/O

Aurora PostgreSQL 15.2.3, July 25, 2023

General enhancements

  • Fixed an issue with the calculation of the AuroraReplicaLag metric

  • Fixed a bug which can cause unavailability during ZDP

  • Fixed an issue that prevented reclaiming storage on transaction commits

  • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase

  • Added Aurora Serverless v2 scaling enhancements

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters (GUCs), customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms

    • aws_lambda.request_timeout_ms

  • Fixed multiple issues which can cause Aurora replicas with the improved read availability feature to restart when reconnecting with the writer instance

  • Fixed an issue preventing a survivable reader reconnect

Aurora PostgreSQL 15.2.2, May 10, 2023

General enhancements

  • Fixed an error when loading the test_decoding plugin in pg_create_logical_replication_slot

  • Fixed an issue that causes logical replication to fail when using write-through cache

  • Updated the Oracle client used by the oracle_fdw extension to version 21.9.0.0.0

Aurora PostgreSQL 15.2.1, April 5, 2023

New features

  • Introduced a new Query Plan Management (QPM) plan hash calculation for multi-schema support. If users want to use QPM in multi-schema environments, they can set the apg_plan_mgmt.plan_hash version to 2 and call apg_plan_mgmt.validate_plans ('update_plan_hash').

  • Logical replication enhancements to improve memory and CPU usage during the processing of large transactions.

  • The CloudWatch metric ReplicationSlotDiskUsage now tracks logical replication specific storage across Aurora storage and local storage.

  • Starting with Aurora PostgreSQL versions 15.2 and 14.7, a user needs to be granted the CONNECT privilege on each database to connect even if the user is granted access to the rds_superuser role. Prior to Aurora PostgreSQL versions 15.2 and 14.7, a user was able to connect to any database and system table if the user was granted the rds_superuser role. Previous Aurora PostgreSQL versions are not impacted by this change, and users with access to the rds_superuser role do not require the CONNECT privilege to access databases in their Aurora PostgreSQL cluster.

General enhancements

  • Upgraded PROJ support to version 9.1.0

  • Upgraded the GDAL library in PostGIS to version 3.5.3

  • Upgraded the pg_hint_plan to version 1.5.0

  • Added support for the TCN and SEG extensions

  • Improved performance of deletes from b-tree and hash indexes on Aurora replicas

  • Includes Aurora Serverless v2 scaling enhancements

  • Fixed issue in QPM that prevented the enforcement of approved plans when joining partitioned tables

  • Improved engine startup time, particularly on large instances with many objects

  • The Aurora function aurora_stat_logical_wal_cache() is now visible to all users

  • Fixed an issue in QPM that could cause unavailability when enforcing plans from prepared statements

Additional improvements and enhancements

  • Updated the following extensions:

    • apg_plan_mgmt to version 2.4

    • hll to version 2.17

    • Oracle_fdw to version 2.5.0

    • orafce to version 4.0.0

    • pg_audit to version 1.7.0

    • pg_cron to version 1.4.2

    • pg_hint_plan to version 1.5.0

    • pg_logical to version 2.4.2

    • pg_repack to version 1.4.8

    • pg_stat_statements to version 1.10

    • pg_trgm to version 1.4

    • pgrouting to version 3.4.1

    • plv8 to version 3.1.4

    • PostGIS to version 3.3.2

    • rds_activity_stream to version 1.6

    • SEG to version 1.0

    • TCN to version 1.0

    • tds_fdw to version 2.0.3

    • wal2json to version 2.5

For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 15.

Differences between PostgreSQL 15 and Aurora PostgreSQL 15

Due to Aurora's unique distributed storage system, Amazon Aurora PostgreSQL version 15 does not support server-side compression with Gzip, LZ4, or Zstandard (zstd) using pg_basebackup, online backups using pg_backup_start() and pg_backup_stop(), and prefetching during WAL recovery. In addition, sequences can be specified as unlogged, but this has no performance improvements over normal sequences.

PostgreSQL 14 versions

PostgreSQL 14.13

This release of Aurora PostgreSQL is compatible with PostgreSQL 14.13. For more information about the improvements in PostgreSQL 14.13, see PostgreSQL release 14.13.

Aurora PostgreSQL 14.13, September 30, 2024

New features for 14.13.

  • Introduced a new fast failover feature to reduce database downtime during the planned extension failover events with fast storage metadata initialization and fast buffer cache recovery.

  • Introduced an optimization to reduce Zero Downtime Patching (ZDP) quiet point duration to 1 second.

Critical stability enhancements for 14.13.

High priority enhancements for 14.13.

  • Fixed issues where the replication of vacuum operations may cause a restart when handling conflicts with user queries.

  • Fixed an issue where deleting a large range of keys from a BTree index could cause concurrent scans to crash.

General enhancements for 14.13.

  • Enabled support for FIPS-validated cryptography, a fully owned AWS implementation. For more information, see AWS-LC is now FIPS 140-3 certified on AWS Security Blog.

  • Improvements to database startup time during initialization and engine upgrades.

  • Fixed an issue that prevented the inclusion of the pg_bigm extension in shared_preload_libraries.

  • Fixed an issue during Zero Downtime Patching which causes some connections to be terminated due to long transferring time. A new ZDP metric in postgresql.log called ZD_SOCKET_TRANSFER_CONN_DROPPED represents these dropped connections.

  • Improved reader availability for Aurora Replicas when using system administration functions.

  • Fixed an in-memory two-phase commit (2PC) metadata caching issue that caused out-of-memory error on Aurora read replicas replicating from RDS PostgreSQL source instances.

  • Introduced a new function pgadmap_get_set_mapping_cmd() in the pg_ad_mapping extension to display commands required to recreate existing Active directory security group to Aurora PostgreSQL database role mappings.

  • Fixed an issue in storage metadata initialization that can cause prolonged database startup time.

  • Fixed an issue that will prevent reclaiming Aurora storage space during major version upgrade.

  • Fixed an issue that prevents ZDP from completing successfully on Optimized Reads-enabled instances.

Additional improvements and enhancements for 14.13.

  • Updated the following extensions:

    • pgvector extension to version 0.7.3.

    • mysql_fdw extension to version REL-2_9_2.

    • orafce extension to version 4.10.3.

    • pgTAP extension to version 1.3.3.

    • pg_cron extension to version 1.6.3.

    • RDKit extension to version 4.5 (Release 2024_03_5).

    • wal2json extension to version 2.6.

    • pg_ad_mapping extension to version 1.0.

    • HypoPG extension to version 1.4.1.

PostgreSQL 14.12

This release of Aurora PostgreSQL is compatible with PostgreSQL 14.12. For more information about the improvements in PostgreSQL 14.12, see PostgreSQL release 14.12.

Aurora PostgreSQL 14.12, August 8, 2024

New features

  • Aurora Serverless v2 now applies pending database parameter max_connections changes during upgrades. The Serverless V2 capacity changes result in pending max_connections changes. As many ZDP supported connections as allowed by max_connections will be preserved during upgrades.

  • Introduced a feature to improve database start up time through faster buffer cache initialization during restarts and database upgrades.

  • Minor version and patch upgrades may now complete faster in some cases.

  • Reduced Aurora Serverless v2 scale up and scale down time in the presence of data intensive workloads or long running queries and busy or unresponsive connections.

  • Added per-query memory usage information to aurora_stat_statements and aurora_stat_plans. For more information, see aurora_stat_statements.

Critical stability enhancements

  • Fixed a pg_repack issue that would incorrectly allow two vacuum processes to operate concurrently on the same table.

High priority enhancements

  • Fixed an issue which leads to cancellation of long-running queries on Global Database replica instances.

General enhancements

  • Improved Aurora PostgreSQL performance for generative AI workloads using pgvector.

  • Fixed issue where minor version upgrades with ZDP would fail in some cases resulting in longer upgrade times.

  • Improved replay performance of vacuum operations on Aurora Replica instances.

  • Fixed a bug where JDBC connections may not be preserved during ZDP enabled upgrades.

  • Improvement to reduce postgres private memory fragmentation.

  • Fixed an issue that caused two-phase commit files to remain, preventing proper cleanup.

  • Improved memory handling while processing two phase commit files.

  • Fixed an issue resulting in degraded performance during query planning on Aurora replicas.

  • Improved availability of Aurora read replicas.

  • Fixed an issue where server might restart if background worker tries to spawn parallel workers.

  • Fixed an issue where the instance may restart when logically applying changes from a remote server when under resource constraints.

Additional improvements and enhancements

  • Updated the following extensions:

    • orafce extension to version 4.9.4.

    • pg_cron extension to version 1.6.2.

    • pg_hint_plan extension to version 1.4.2.

    • pg_partman extension to version 5.1.0.

    • pg_repack extension to version 1.5.0.

    • pg_tle to version 1.4.0.

    • pg_vector extension to version 0.7.0.

    • pgrouting extension to version 3.6.2.

    • pgTap extension to version 1.3.2.

    • PostGIS extension to version 3.4.2.

    • RDKit extension to version 2024_03_1.

PostgreSQL 14.11

This release of Aurora PostgreSQL is compatible with PostgreSQL 14.11. For more information about the improvements in PostgreSQL 14.11, see PostgreSQL release 14.11.

Aurora PostgreSQL 14.11.2, June 20, 2024

General enhancements

  • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

High priority enhancements

  • Fixed a crash with execution of pltsql user defined functions.

  • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

Critical stability enhancements

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

  • Fixed an issue with background worker where it may crash when executed in parallel worker context.

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

  • Fixed issues in how two-phase commit files are handled.

Aurora PostgreSQL 14.11.1, April 29, 2024

New features

  • Added resource usage summary to pg_dump.

  • Added function overloading for aurora_stat_statements(bool showtext) and aurora_stat_plans(bool showtext).

General enhancements

  • Fixed multiple minor version upgrade issues to improve connection preservation with zero-downtime patching.

  • Reduced database boot time due to improved initialization time for large volumes.

  • Introduced faster COPY operations by reducing contention on the relation extension lock and proactively extending relations.

  • Improvements to reduce replication lag by intelligently skipping the replay of certain log records, thereby reducing the replay load.

  • Fixed an issue during recovery conflict on a read node which, in rare cases, could cause brief unavailability.

  • Fixed an issue where a database would fail to startup during a major version upgrade patch, in rare scenarios.

  • Improved availability of read replicas by allowing recovery from replication errors in more situations.

  • Fixed an issue that would cause zero-downtime patching to timeout.

  • Fixed an issue resulting in a deadlock when a logical replication table synchronization operation fails.

  • Fixed a logical replication decoding issue that fails to process catalog modifying changes after spilling to storage if there was a concurrent aborted sub-transaction.

  • Improved log record validation before it is written to storage.

  • Fixed an issue that would result in sessions incorrectly reporting ClientRead wait events after a zero-downtime patching event.

  • Fixed an ambiguous function definition of aws_s3.query_export_to_s3 when upgrading the aws_s3 extension from version 1.1 to 1.2.

High priority enhancements

  • Fixed an issue related to resuming a logical replication slot where, in rare cases, it could cause the slot to become stuck.

  • Fixed an issue that would result in a restart when creating a database in a tablespace.

  • Fixed an issue related to incorrect logical replication error handling to improve DB stability.

Critical stability enhancements

  • Fixed an issue related to replication origins that in rare cases might result in longer recovery time and impact availability.

  • Fixed an issue that in rare cases may cause transactions to be partially replicated by newly created logical replication slots. For more information, see Potential data loss due to race condition during logical replication slot creation.

  • Fixed an issue where pg_stat_statements can cause zero-downtime patching to fail.

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

Additional improvements and enhancements

  • Updated the following extensions:

    • pg_tle extension to version 1.3.4.

    • PLV8 extension to version 3.1.10.

    • RDKit Cartridge to version Release_2023_09_4.

  • New GUC Parameters has been added

    • pgtle.clientauth_databases_to_skip

    • pgtle.clientauth_db_name

    • pgtle.clientauth_num_parallel_workers

    • pgtle.clientauth_users_to_skip

    • pgtle.enable_clientauth

    • pgtle.passcheck_db_name

PostgreSQL 14.10

This release of Aurora PostgreSQL is compatible with PostgreSQL 14.10. For more information about the improvements in PostgreSQL 14.10, see PostgreSQL release 14.10.

Aurora PostgreSQL 14.10.4, June 24, 2024

General enhancements

  • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

High priority enhancements

  • Fixed an issue with Parallel query execution in which a backend may get into indefinite hang in certain cases.

  • Fixed a crash with execution of pltsql user defined functions.

  • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

Critical stability enhancements

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

Aurora PostgreSQL 14.10.3, March 13, 2024

General enhancements

  • Fixed a performance degradation issue in PLV8 extension.

Aurora PostgreSQL 14.10.2, February 22, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue where pg_stat_statements can block minor version upgrade during ZDP.

  • Fixed an issue where a logical replication slot would no longer emit changes due to an overly strict data consistency check.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 14.10.0, December 21, 2023

Following the announcement of updates to the PostgreSQL database by the open source community, we have updated Amazon Aurora PostgreSQL-Compatible Edition to support PostgreSQL versions 15.5, 14.10, 13.13, and 12.17. These releases contain product improvements and bug fixes made by the PostgreSQL community, along with Aurora-specific improvements. New features and improvements for Babelfish for Aurora PostgreSQL version 3.4 are also included.

Refer to the Aurora version policy to help you to decide how often to upgrade and how to plan your upgrade process. As a reminder, if you are running any version of Amazon Aurora PostgreSQL version 11, you must upgrade to a newer major version by February 29, 2024.

New features

  • Amazon Bedrock integration – By using the Amazon Aurora machine learning extension with your Aurora PostgreSQLDB cluster, you can now use Amazon Bedrock foundational AI models.

  • Using Active Directory security groups for Aurora PostgreSQL access control – Add group role authentication support using AWS Directory Service for Microsoft Active Directory with the new pg_ad_mapping extension.

  • Delegated Extension Support – This feature allows delegating extension management to lower privileged user with the new rds_extension role.

  • Added support for aurora_compute_plan_id parameter which is turned on by default in an Aurora PostgreSQL DB Cluster and DB Parameter Group. For more information, see Monitoring query execution plans for Aurora PostgreSQL.

  • Query Plan Management (QPM) enhancements:

    • Plan outlines will be updated to the latest format version as part of the update_plan_hash action for apg_plan_mgmt.validate_plans().

    • Support was added for parallel append enforcement as a part of parallel query enforcement.

  • Added support for the HypoPG extension at version 1.4.0.

  • Added support for the h3-pg extension and the h3-postgis extension at version 4.1.3.

High priority enhancements

  • Fixed an issue which may cause a reboot when logically replicating changes in the presence of concurrently-running DDL or canceled sub-transactions

  • Fixed an issue which may cause an Aurora replica to reboot when reading a page which was modified during WAL replay

  • Fixed an issue where if a specific volume metadata is invalid on a source cluster, it will remain invalid on a cloned cluster. Since the clone cluster uses a new volume, the metadata will now be recreated.

  • Fixed a bug that may cause an engine crash during zero-downtime patching (ZDP)

  • Introduced a new parameter, rds.enable_memory_management, which is used to enable and disable the improved memory management feature.

  • Improved index scan query performance by skipping unnecessary B-tree page reads when a composite index is used with large data sets.

  • Backported fixes for the following PostgreSQL community security issues:

General enhancements

  • Fixed an issue which may cause an Aurora replica to reboot while reconnecting with the writer DB instance.

  • Added support for the rdkit.morgan_fp_size parameter

  • rds-superuser can now run the pg_stat_reset_slru function

  • Fixed an issue where MultiXact SLRU accesses were not credited to the correct pg_stat_slru category.

  • Fixed an issue which may cause unused WAL segements to not be properly removed

  • Fixed an issue where pglogical does not correctly pass-through replication origin data when using the binary output format

  • rds_superuser can now execute ALTER COLLATION to refresh the collation version of a locale in the catalog.

  • Fixed a crash in dblink and postgres_fdw extensions due to invalid connections

  • Fixed an issue where the aws_s3 extension can import HTTP error responses into the table

  • Fixed an issue which may cause an Aurora Replica instance with Optimized Reads to reboot while reconnecting with the writer DB instance.

  • Fixed an issue which may cause an Aurora replica with Optimized Reads to reboot while caching a page to tiered cache.

  • Record the version of the AWS independent default collation library version in pg_collation catalog.

Additional improvements and enhancements

  • Updated the following extensions:

    • mysql_fdw to version 2.9.1

    • Oracle_fdw to version 2.6.0

    • Orafce to version 4.6.0

    • pg_cron to version 1.6.0

    • pg_proctab to version 0.0.10

    • pg_tle to version 1.2.0

    • plv8 to version 3.1.8

    • PostGIS to version 3.4.0

    • prefix to version 1.2.10

    • RDKit to version 4.4.0 (Release_2023_09_1)

For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 14.

PostgreSQL 14.9

This release of Aurora PostgreSQL is compatible with PostgreSQL 14.9. For more information about the improvements in PostgreSQL 14.9, see PostgreSQL release 14.9.

Aurora PostgreSQL 14.9.7, June 25, 2024

General enhancements

  • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

High priority enhancements

  • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

Critical stability enhancements

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

Aurora PostgreSQL 14.9.6, March 13, 2024

General enhancements

  • Fixed a performance degradation issue in PLV8 extension.

Aurora PostgreSQL 14.9.5, February 22, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue where pg_stat_statements can block minor version upgrade during ZDP.

  • Fixed an issue where a logical replication slot would no longer emit changes due to an overly strict data consistency check.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 14.9.3, December 15, 2023

High priority enhancements

  • Fixed an issue which may cause a reboot when logically replicating changes in the presence of concurrent canceled subtransactions and DDL

Aurora PostgreSQL 14.9.2, December 13, 2023

Critical stability enhancements
High priority enhancements

  • Improved the index scan query performance by skipping unnecessary B-tree page reads when a composite index is used with large data sets

  • Fixed an issue with index scan queries that, in rare cases, could lead to database instance restarts

General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 14.9.1, November 09, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

General enhancements

  • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

Aurora PostgreSQL 14.9.0, October 24, 2023

New features

  • Added support for mysql_fdw version 2.9.0

  • Added support in the aws_s3 extension for exporting to an S3 bucket encrypted with a customer managed KMS key

  • Improved the availability of Aurora replicas in the global DB secondary clusters

  • Added support for query plan capture on Aurora replicas

  • Added support for query plan enforcement with materialize nodes

  • Added support for query plan enforcement with parallel query operators

  • Allowed query plans under a given cost threshold to not be captured

High priority enhancements

  • Included optimizations to improve the time to scale up in Aurora Serverless instances

General enhancements

  • Fixed an issue in the aws_s3 extension where the number of rows exported is incorrectly reported when the total number exceeds 2 billion

  • Provided options to configure timeouts in the aws_s3 extension. By setting the following parameters (GUCs), customers will now be able to change the timeout thresholds for imports from S3:

    • aws_s3.curlopt_low_speed_limit

    • aws_s3.curlopt_low_speed_time

  • Prevented instance creation failure in some edge cases

  • Improved the performance of replay of commit transaction operations on Aurora replicas

  • Fixed an issue where, in rare cases, an import from the aws_s3 extension fails to complete

  • Updated the GEOS library for PostGIS to version 3.12.0

  • Improved Aurora Serverless v2 database memory scaling which reduces the overall database instance scale time

  • Added the WAIT_EVENT_Aurora_CLUSTER_CACHE_MANAGER_SENDER wait event to denote wait times in the cluster cache manager sender

  • Added the WAIT_EVENT_Aurora_SERVERLESS_MONITORING_MAIN wait event to denote wait times in Aurora Serverless resource monitoring

  • Improved the handling of invalid non-persisted metadata during reads from storage on read replicas

  • Fixed an issue where the database may crash during the start of a logical replication slot

  • Increased the limit for pg_cron cron.max_running_jobs parameter from 100 to 1000

  • The pgAudit pgaudit.log_statement parameter is now modifiable

  • Introduced diagnostics for transient metadata used for I/O

  • Fixed a bug in CREATE TABLE command to handle table name starting with '#' correctly

Additional improvements and enhancements

  • Updated the following extensions:

    • orafce to version 4.3.0

    • pg_logical to version 2.4.3

    • pg_tle to version 1.1.1

    • pgvector to version 0.5.0

    • PostGIS to version 3.3.3

    • RDKit to version 4.3

For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 14.

PostgreSQL 14.8

This release of Aurora PostgreSQL is compatible with PostgreSQL 14.8. For more information about the improvements in PostgreSQL 14.8, see PostgreSQL release 14.8.

Aurora PostgreSQL 14.8.6, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 14.8.5, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue that would cause a logical replication slot to transiently error out in the presence of aborted subtransactions and DDL.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 14.8.4, December 14, 2023

Critical stability enhancements
High priority enhancements

  • Improved the index scan query performance by skipping unnecessary B-tree page reads when a composite index is used with large data sets

  • Fixed an issue with index scan queries that, in rare cases, could lead to database instance restarts

General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 14.8.3, November 14, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

General enhancements

  • Fixed an issue that could result in read replica lag due to stale metadata

  • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

Aurora PostgreSQL 14.8.2, October 4, 2023

High priority stability enhancements

  • Backported a fix for the following PostgreSQL community security issue:

High priority enhancements

  • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads

  • Fixed an issue which can cause vacuum operations to become blocked after the restart of an Aurora replica

  • Fixed an issue that would cause a crash when executing the COPY FROM command

  • Fixed an issue that would cause high CPU usage and prevent new connections

  • Fixed an issue where UPDATE and DELETE from a table with foreign key could fail unexpectedly with "ERROR: 40001: could not serialize access due to concurrent update when using Serializable snapshot"

General enhancements

  • Introduced diagnostics for the transient metadata used for I/O

  • Fixed an issue that prevented the enablement of improved memory management in certain scenarios in Aurora PostgreSQL 15.3

Aurora PostgreSQL 14.8.0, July 13, 2023

Following the announcement of updates to the PostgreSQL database by the open source community, we have updated Amazon Aurora PostgreSQL-Compatible Edition to support PostgreSQL versions 15.3, 14.8, 13.11, 12.15, and 11.20. These releases contains product improvements and bug fixes made by the PostgreSQL community, along with Aurora-specific improvements. The releases also contain new features and improvements for Babelfish for Aurora PostgreSQL version 3.2, and improved support for AWS Database Migration Service. Refer to the Amazon Aurora versions to help you to decide how often to upgrade and how to plan your upgrade process. As a reminder, if you are running any version of Amazon Aurora PostgreSQL 11, you must upgrade to a newer major version by February 29, 2024.

New features

  • This release contains memory management improvements which increase database stability and availability by proactively preventing issues caused by insufficient memory. For more information, see Improved memory management in Aurora PostgreSQL.

  • Added support for pgvector extension version 0.4.1

High priority enhancements

  • Fixed an issue with the subtransaction metadata handling when performing a survivable reader reconnect

  • Fixed an issue during ZDP which is related to the extension environment variables

  • Addressed a transient error during logical replication that caused a process to incorrectly calculate that it had encountered an unexpected page

  • Fixed an issue which causes a period of unavailability due to a partially created replication origin state file

General enhancements

  • Addressed an issue where the computing query identifier displayed a warning, "WARNING: unrecognized node type: 378"

  • Addressed an issue that caused the initial data sync of a relation to become blocked due to the premature removal of the logical replication slot on the publisher

  • Added a new function, aurora_stat_memctx_usage(), to show backend memory use breakdown at a Postgres memory context level

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters (GUCs), customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms

    • aws_lambda.request_timeout_ms

  • Fixed an issue with the calculation of the AuroraReplicaLag metric

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots

  • Further reduced the database downtime during ZDP

  • Fixed a bug which can cause unavailability during ZDP

  • Fixed an issue which caused pg_ls_waldir() to return "ERROR: could not stat file"

  • Added support for TLS 1.3 with ciphers TLS_AES_128_GCM_SHA256 and TLS_AES_256_GCM_SHA384

  • Addressed an issue that blocked a major version upgrade on the Aurora replica of an RDS for PostgreSQL DB instance

  • Fixed an issue that could prevent scaling in Aurora Serverless v2 instances

  • Fixed an issue in logical replication which, in rare cases, can cause a period of unavailability due to the incorrect subtransaction metadata

  • Fixed an issue in the pg_vector extension where, in rare cases, infinite or NAN values caused a crash during the index creation

  • Upgraded GEOS to version 3.11.2

  • Upgraded pg_cron to version 1.5

  • Upgraded pg_partman to version 4.7.3

  • Upgraded pg_tle to version 1.0.3

  • Upgraded plv8 to version 3.1.6

  • Upgraded tds_fdw to 2.0.3

PostgreSQL 14.7

This release of Aurora PostgreSQL is compatible with PostgreSQL 14.7. For more information about the improvements in PostgreSQL 14.7, see PostgreSQL release 14.7.

Aurora PostgreSQL 14.7.8, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 14.7.7, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue that would cause a logical replication slot to transiently error out in the presence of aborted subtransactions and DDL.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 14.7.6, December 15, 2023

Critical stability enhancements
High priority enhancements

  • Improved the index scan query performance by skipping unnecessary B-tree page reads when a composite index is used with large data sets

  • Fixed an issue with index scan queries that, in rare cases, could lead to database instance restarts

General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 14.7.5, November 14, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

General enhancements

  • Fixed an issue that could result in read replica lag due to stale metadata

  • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

Aurora PostgreSQL 14.7.4, October 5, 2023

High priority stability enhancements
High priority enhancements

  • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads

  • Fixed an issue which can cause vacuum operations to become blocked after the restart of an Aurora replica

  • Fixed an issue that would cause high CPU usage and prevent new connections

General enhancements

  • Introduced diagnostics for the transient metadata used for I/O

Aurora PostgreSQL 14.7.3, July 24, 2023

General enhancements

  • Fixed an issue with the calculation of the AuroraReplicaLag metric

  • Fixed a bug which can cause unavailability during ZDP

  • Fixed an issue that prevented reclaiming storage on transaction commits

  • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase

  • Added Aurora Serverless v2 scaling enhancements

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters (GUCs), customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms

    • aws_lambda.request_timeout_ms

  • Fixed multiple issues which can cause Aurora replicas with the improved read availability feature to restart when reconnecting with the writer instance

  • Fixed an issue preventing a survivable reader reconnect

Aurora PostgreSQL 14.7.2, May 10, 2023

General enhancements

  • Fixed an error when loading the test_decoding plugin in pg_create_logical_replication_slot

  • Fixed an issue that causes logical replication to fail when using write-through cache

  • Updated the Oracle client used by the oracle_fdw extension to version 21.9.0.0.0

Aurora PostgreSQL 14.7.1, April 5, 2023

New features

  • Introduced a new QPM plan hash calculation for multi-schema support. If users want to use QPM in multi-schema environments, they can set the apg_plan_mgmt.plan_hash version to 2 and call apg_plan_mgmt.validate_plans('update_plan_hash').

  • Logical replication enhancements to improve memory and CPU usage during the processing of large transactions.

  • The CloudWatch metric ReplicationSlotDiskUsage now tracks logical replication specific storage across Aurora storage and local storage.

  • Starting with Aurora PostgreSQL versions 15.2 and 14.7, a user needs to be granted the CONNECT privilege on each database to connect even if the user is granted access to the rds_superuser role. Prior to Aurora PostgreSQL versions 15.2 and 14.7, a user was able to connect to any database and system table if the user was granted the rds_superuser role. Previous Aurora PostgreSQL versions are not impacted by this change, and users with access to the rds_superuser role do not require the CONNECT privilege to access databases in their Aurora PostgreSQL cluster.

High priority stability enhancements

  • Fixed an issue where the commit latency metrics weren't updated

General enhancements

  • Upgraded PROJ support to version 9.1.0

  • Upgraded the GDAL library in PostGIS to version 3.5.3

  • Fixed the upgrade paths from pg_hint_plan 1.3x to 1.4

  • Added support for the TCN and SEG extensions

  • Improved performance of deletes from b-tree and hash indexes on Aurora replicas

  • Includes Aurora Serverless v2 scaling enhancements

  • Fixed an issue in QPM that prevented the enforcement of approved plans when joining partitioned tables

  • Fixed an issue that caused incorrect buffer hit counts in EXPLAIN

  • Improved the engine startup time, particularly on large instances with many objects

  • The Aurora function aurora_stat_logical_wal_cache() is now visible to all users

  • Fixed an issue in QPM that could cause unavailability when enforcing plans from prepared statements

Additional improvements and enhancements

  • Updated the following extensions:

    • hll to version 2.17

    • Oracle_fdw to version 2.5.0

    • orafce to version 4.0.0

    • pg_cron to version 1.4.2

    • pg_hint_plan to version 1.4.1

    • pg_logical to version 2.4.2

    • pg_trgm to version 1.4

    • pgrouting to version 3.4.1

    • plv8 to version 3.1.4

    • PostGIS to version 3.3.2

    • SEG to version 1.0

    • TCN to version 1.0

    • wal2json to version 2.5

For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 14.

PostgreSQL 14.6

This release of Aurora PostgreSQL is compatible with PostgreSQL 14.6. For more information about the improvements in PostgreSQL 14.6, see PostgreSQL release 14.6.

Aurora PostgreSQL 14.6.9, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 14.6.8, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 14.6.7, December 15, 2023

Critical stability enhancements
General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 14.6.6, November 17, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

Aurora PostgreSQL 14.6.5, October 04, 2023

Critical stability enhancements
High priority stability enhancements

  • Fixed an issue which can cause a database instance to restart while executing IO intensive read workloads

  • Fixed an issue that would cause high CPU usage and prevent new connections

General enhancements

  • Introduced diagnostics for the transient metadata used for I/O

Aurora PostgreSQL 14.6.4, September 13, 2023

General enhancements

  • Added Aurora Serverless v2 scaling enhancements

  • Fixed an issue in pg_cron which can prevent scaling in Aurora Serverless v2

  • Fixed an issue with the calculation of the AuroraReplicaLag metric

  • Fixed a bug which can cause unavailability during ZDP

  • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms

    • aws_lambda.request_timeout_ms

Aurora PostgreSQL 14.6.2, March 3, 2023

Critical stability enhancements

  • Backported a fix for the following PostgreSQL community security issue:

General stability enhancements

  • Fixed an issue where the approved plans for joins with partitioned tables weren't being enforced

  • Fixed an issue in PostGIS where the GDAL data wasn't loading

  • Fixed an issue that increased the amount of recovery work during startup if logical replication is enabled

  • Fixed an issue with the aws_s3 extension where loading a large number of records can time out

  • Fixed an issue that causes logical replication to fail when using write-through cache

Aurora PostgreSQL 14.6.1, February 17, 2023

Critical stability enhancements

  • Fixed a critical stability issue.

Aurora PostgreSQL 14.6.0, January 20, 2023

High priority stability enhancements

  • Fixed an issue where an upgrade fails because the oldest MultiXactId is updated incorrectly

  • Fixed an issue that could lead to a brief period of unavailability

General stability enhancements

  • Fixed an issue that caused DB instance migration failures

  • Fixed an issue where the DB fails to start because of an inconsistency in the metadata

  • Improved the error handling and diagnosability

  • Upgraded the RDKit extension to version 4.2

  • Upgraded the GDAL library to version 3.4.3

  • Fixed an issue where the cluster cache management process doesn't shutdown gracefully

  • Fixed an issue that can cause certain processes to linger in an inconsistent state during a clean shutdown

  • Fixed an issue with the pg_repack extension

  • Improved the collation library, glibc, handling with a new independent default collation library

PostgreSQL 14.5

This release of Aurora PostgreSQL is compatible with PostgreSQL 14.5. For more information about the improvements in PostgreSQL 14.5, see PostgreSQL release 14.5.

Aurora PostgreSQL 14.5.7, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 14.5.6, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 14.5.5, December 18, 2023

Critical stability enhancements
General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 14.5.4, November 17, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

Aurora PostgreSQL 14.5.3, October 17, 2023

High priority stability enhancements
High priority enhancements

  • Fixed an issue which blocked vacuum operations after the restart of an Aurora replica

  • Fixed an issue that would cause high CPU usage and prevent new connections

General stability enhancements

  • Fixed an issue which causes the stats collector process to repeatedly restart

  • Improved the scale times for Aurora Serverless v2

  • Fix a bug which can cause unavailability during ZDP

  • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an S3 bucket with a name containing dots

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms

    • aws_lambda.request_timeout_ms

  • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads

  • Fixed an issue that causes logical replication to fail when using write-through cache

Aurora PostgreSQL 14.5.2, March 2, 2023

General stability enhancements

  • Fixed an issue where the approved plans for joins with partitioned tables weren't being enforced

  • Fixed an issue that could cause the unavailability of query plan management (QPM)

  • Fixed an issue that increased the amount of recovery work during startup if logical replication is enabled

  • Fixed an issue with the aws_s3 extension where loading a large number of records can time out

  • Fixed an issue with the pg_cron parallel running of tasks

Aurora PostgreSQL 14.5.1, December 13, 2022

General stability enhancements

  • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance

  • Fixed an issue where the engine experiences stability issues during database minor and patch release upgrades

  • Fixed an issue that could cause unavailability during replication

  • Fixed an issue that could cause data inconsistency during replication

Aurora PostgreSQL 14.5.0, November 09, 2022

High priority stability enhancements

  • Fixed an Aurora Serverless v2 scaling issue

  • Fixed an issue which caused Aurora Serverless v2 shrink failure

General stability enhancements

  • Improved buffer cache scavenging when the buffer cache is in duress

  • Fixed an issue in database activity streams that leads to high memory consumption

  • Fixed an issue where DB instances could restart when applying changes from a logical replication subscription

  • Fixed an issue that caused DB instance restarts

  • Fixed an issue where a DB instance restarts recursively while generating monitoring metrics during a crash

  • Fixed an issue where a DB instance restarted during performance metric collection

  • Fixed an issue where an attempt to connect to the database would fail with SSLV3_ALERT_CERTIFICATE_UNKNOWN

  • Improved the error reporting in case of an inconsistent B-tree index

  • Improved the diagnostic logging around setting invalid hint bits

  • Fixed an issue where autovacuum would incorrectly skip tables

  • Improved the logical replication prefetching

  • Fixed a durability issue in the GIN indexes

  • Provided options to configure MultiXact SLRU cache. By setting the following parameters (GUCs), customers will now be able to change the MultiXact SLRU cache sizes:

    • multixact_members_cache_size

    • multixact_offsets_cache_size

  • Fixed an issue to detect and cancel stuck major version upgrades

  • Fixed an issue in hash join that could lead to increased memory consumption

  • Improved the logical replication performance

  • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable

  • Upgraded the GEOS version to 3.10.3

  • Updated the PLV8 version to 3.0.0

  • Updated the PostGIS extension to version 3.2.3

  • Fixed an issue with st_orientedenvelope that caused it to loop with a 1-D input to return 0

  • Fixed an issue where the connection to SQL Server using tds_fdw fails

PostgreSQL 14.4

This release of Aurora PostgreSQL is compatible with PostgreSQL 14.4. For more information about the improvements in PostgreSQL 14.4, see PostgreSQL release 14.4.

Aurora PostgreSQL 14.4.10, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 14.4.9, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 14.4.8, December 22, 2023

Critical stability enhancements
General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 14.4.7, November 17, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

Aurora PostgreSQL 14.4.6, October 19, 2023

High priority stability enhancements
High priority enhancements

  • Fixed an issue which blocked vacuum operations after the restart of an Aurora replica

  • Fixed an issue that would cause high CPU usage and prevent new connections

General stability enhancements

  • Fixed an issue which causes the stats collector process to repeatedly restart

  • Improved the scale times for Aurora Serverless v2

  • Fix a bug which can cause unavailability during ZDP

  • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an S3 bucket with a name containing dots

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms

    • aws_lambda.request_timeout_ms

Aurora PostgreSQL 14.4.5, December 14, 2022

General stability enhancements

  • Fixed an issue where the engine experiences stability issues during database minor and patch release upgrades

  • Fixed an issue that could cause unavailability during replication

  • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable

  • Fixed an issue that could cause data inconsistency during replication

Aurora PostgreSQL 14.4.4, November 17, 2022

High priority stability enhancements

  • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance

Aurora PostgreSQL 14.4.0, October 13, 2022

High priority stability enhancements

  • Fixed an issue where PLV8 crashed during a JavaScript error scenario

  • Fixed an issue where PLV8 crashed when trying to acquire a semaphore to execute the next task

  • Fixed an issue where scaling an Aurora Serverless v2 instance gets stuck if VACUUM is running

General stability enhancements

  • Fixed a bug where Aurora PostgreSQL can't file the relfilenode

  • Fixed a database restart issue when a plan gets invaliated but the engine still checks if it is valid

  • Fixed a stuck scaling issue when the current scaling event times out

  • Upgraded the plv8 extension to version 3.0.0

  • Upgraded the PostGIS extension to version 3.2.3

  • Fixed an issue where extended query messages might be lost during zero-downtime patching (ZDP) causing the extended query to hang after the ZDP completion

PostgreSQL 14.3

This release of Aurora PostgreSQL is compatible with PostgreSQL 14.3. For more information about the improvements in PostgreSQL 14.3, see PostgreSQL release 14.3.

Aurora PostgreSQL 14.3.10, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

  • Fixed a V8 Engine CVE-2018-6065 for PLV8 2.x.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 14.3.9, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 14.3.8, December 22, 2023

Critical stability enhancements
General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 14.3.7, November 17, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

Aurora PostgreSQL 14.3.6, October 19, 2023

High priority stability enhancements
High priority enhancements

  • Fixed an issue which blocked vacuum operations after the restart of an Aurora replica

  • Fixed an issue that would cause high CPU usage and prevent new connections

General stability enhancements

  • Fixed an issue which causes the stats collector process to repeatedly restart

  • Improved the scale times for Aurora Serverless v2

  • Fix a bug which can cause unavailability during ZDP

  • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an S3 bucket with a name containing dots

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms

    • aws_lambda.request_timeout_ms

Aurora PostgreSQL 14.3.5, December 14, 2022

General stability enhancements

  • Fixed an issue where the engine experiences stability issues during database minor and patch release upgrades

  • Fixed an issue that could cause unavailability during replication

  • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable

  • Fixed an issue that could cause data inconsistency during replication

Aurora PostgreSQL 14.3.4, November 17, 2022

High priority stability enhancements

  • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance

Aurora PostgreSQL 14.3.3, October 13, 2022

High priority stability enhancements

  • Fixed a PLV8 issue where the base parameter doesn't get loaded properly into the memory

  • Fixed an issue where scaling an Aurora Serverless v2 instance gets stuck if VACUUM is running

General stability enhancements

  • Fixed a bug where Aurora PostgreSQL can't file the relfilenode

  • Fixed a database restart issue when a plan gets invaliated but the engine still checks if it is valid

  • Fixed a stuck scaling issue when the current scaling event times out

  • Upgraded the PostGIS extension to version 3.1.7

  • Fixed an issue where extended query messages might be lost during zero-downtime patching (ZDP) causing the extended query to hang after the ZDP completion

Aurora PostgreSQL 14.3.1, July 6, 2022

Critical stability enhancements

  • Fixed an issue that could cause periods of unavailability during a storage node restart

High priority stability enhancements

  • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability

  • Fixed an issue when the connection to SQL Server fails using the TDS_FDW extension to query a foreign table

  • Fixed an issue that caused connections using the provided root certificate to fail

  • Improved the diagnostic and supportability information in case of inconsistent B-tree index entries

Aurora PostgreSQL 14.3.0, June 21, 2022

New features
Additional improvements and enhancements

  • Contains all of the fixes, features, and improvements present in Aurora PostgreSQL 13.7.

  • Backported the following bug fix from the PostgreSQL 14.4 release: Reverted changes to CONCURRENTLY that "sped up" Xmin advance to prevent Index Corruption with the CREATE INDEX CONCURRENTLY / REINDEX CONCURRENTLY commands.

  • This release supports lo extension version 1.1.

  • This release supports old_snapshot extension version 1.0.

  • This release supports EBCDIC collations for the mainframe modernization efforts. For more information, see Aurora PostgreSQL collations for EBCDIC and other mainframe migrations in the Amazon Aurora User Guide.

  • Updated the following extensions:

    • amcheck to version 1.3

    • btree_gist to version 1.6

    • cube to version 1.5

    • hll to version 2.16

    • hstore to version 1.8

    • intarray to version 1.5

    • log_fdw to version 1.3

    • oracle_fdw to version 2.4.0

    • pg_hint_plan to version 1.4

    • pg_partman to version 4.6.0

    • pg_repack to version 1.4.7

    • pg_stat_statements to version 1.9

    • pg_trgm to version 1.6

    • pgaudit to version 1.6.1

    • pgrouting to version 3.2.0

    • pgtap to version 1.2.0

    • postgres_fdw to version 1.1

PostgreSQL 13 versions (includes some deprecated versions)

PostgreSQL 13.16

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.16. For more information about the improvements in PostgreSQL 13.16, see PostgreSQL release 13.16.

Aurora PostgreSQL 13.16, September 30, 2024

New features for 13.16.

  • Introduced a new fast failover feature to reduce database downtime during the planned extension failover events with fast storage metadata initialization and fast buffer cache recovery.

  • Introduced an optimization to reduce Zero Downtime Patching (ZDP) quiet point duration to 1 second.

Critical stability enhancements for 13.16.

High priority enhancements for 13.16.

  • Fixed issues where the replication of vacuum operations may cause a restart when handling conflicts with user queries.

  • Fixed an issue where deleting a large range of keys from a BTree index could cause concurrent scans to crash.

General enhancements for 13.16.

  • Enabled support for FIPS-validated cryptography, a fully owned AWS implementation. For more information, see AWS-LC is now FIPS 140-3 certified on AWS Security Blog.

  • Improvements to database startup time during initialization and engine upgrades.

  • Fixed an issue that prevented the inclusion of the pg_bigm extension in shared_preload_libraries.

  • Fixed an issue during Zero Downtime Patching which causes some connections to be terminated due to long transferring time. A new ZDP metric in postgresql.log called ZD_SOCKET_TRANSFER_CONN_DROPPED represents these dropped connections.

  • Improved reader availability for Aurora Replicas when using system administration functions.

  • Fixed an in-memory two-phase commit (2PC) metadata caching issue that caused out-of-memory error on Aurora read replicas replicating from RDS PostgreSQL source instances.

  • Fixed an issue in storage metadata initialization that can cause prolonged database startup time.

  • Fixed an issue that will prevent reclaiming Aurora storage space during major version upgrade.

Additional improvements and enhancements for 13.16.

  • Updated the following extensions:

    • pgvector extension to version 0.7.3.

    • mysql_fdw extension to version REL-2_9_2.

    • orafce extension to version 4.10.3.

    • pgTAP extension to version 1.3.3.

    • pg_cron extension to version 1.6.3.

    • RDKit extension to version 4.5 (Release 2024_03_5).

    • wal2json extension to version 2.6.

    • HypoPG extension to version 1.4.1.

PostgreSQL 13.15

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.15. For more information about the improvements in PostgreSQL 13.15, see PostgreSQL release 13.15.

Aurora PostgreSQL 13.15, August 8, 2024

New features

  • Aurora Serverless v2 now applies pending database parameter max_connections changes during upgrades. The Serverless V2 capacity changes result in pending max_connections changes. As many ZDP supported connections as allowed by max_connections will be preserved during upgrades.

  • Introduced a feature to improve database start up time through faster buffer cache initialization during restarts and database upgrades.

  • Minor version and patch upgrades may now complete faster in some cases.

  • Reduced Aurora Serverless v2 scale up and scale down time in the presence of data intensive workloads or long running queries and busy or unrespoive connections.

Critical stability enhancements

  • Fixed a pg_repack issue that would incorrectly allow two vacuum processes to operate concurrently on the same table.

High priority enhancements

  • Fixed an issue which leads to cancellation of long-running queries on Global Database replica instances.

General enhancements

  • Improved Aurora PostgreSQL performance for generative AI workloads using pgvector.

  • Fixed issue where minor version upgrades with ZDP would fail in some cases resulting in longer upgrade times.

  • Improved replay performance of vacuum operations on Aurora Replica instances.

  • Fixed a bug where JDBC connections may not be preserved during ZDP enabled upgrades.

  • Improvement to reduce postgres private memory fragmentation.

  • Fixed an issue that caused two-phase commit files to remain, preventing proper cleanup.

  • Improved memory handling while processing two phase commit files.

  • Fixed an issue resulting in degraded performance during query planning on Aurora replicas.

  • Improved availability of Aurora read replicas.

Additional improvements and enhancements

  • Updated the following extensions:

    • orafce extension to version 4.9.4.

    • pg_cron extension to version 1.6.2.

    • pg_partman extension to version 5.1.0.

    • pg_repack extension to version 1.5.0.

    • pg_tle to version 1.4.0.

    • pg_vector extension to version 0.7.0.

    • pgrouting extension to version 3.6.2.

    • pgTap extension to version 1.3.2.

    • PostGIS extension to version 3.4.2.

    • RDKit extension to version 2024_03_1.

PostgreSQL 13.14

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.14. For more information about the improvements in PostgreSQL 13.14, see PostgreSQL release 13.14.

Aurora PostgreSQL 13.14.2, June 20, 2024

General enhancements

  • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

High priority enhancements

  • Fixed a crash with execution of pltsql user defined functions.

  • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

Critical stability enhancements

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

  • Fixed an issue with background worker where it may crash when executed in parallel worker context.

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

  • Fixed issues in how two-phase commit files are handled.

Aurora PostgreSQL 13.14.1, April 29, 2024

New features

  • Added resource usage summary to pg_dump.

General enhancements

  • Fixed multiple minor version upgrade issues to improve connection preservation with zero-downtime patching.

  • Reduced database boot time due to improved initialization time for large volumes.

  • Introduced faster COPY operations by reducing contention on the relation extension lock and proactively extending relations.

  • Improvements to reduce replication lag by intelligently skipping the replay of certain log records, thereby reducing the replay load.

  • Fixed an issue during recovery conflict on a read node which, in rare cases, could cause brief unavailability.

  • Fixed an issue where a database would fail to startup during a major version upgrade patch, in rare scenarios.

  • Improved availability of read replicas by allowing recovery from replication errors in more situations.

  • Fixed an issue that would cause zero-downtime patching to timeout.

  • Fixed a logical replication decoding issue that fails to process catalog modifying changes after spilling to storage if there was a concurrent aborted sub-transaction.

  • Improved log record validation before it is written to storage.

  • Fixed an issue that would result in sessions incorrectly reporting ClientRead wait events after a zero-downtime patching event.

  • Fixed an ambiguous function definition of aws_s3.query_export_to_s3 when upgrading the aws_s3 extension from version 1.1 to 1.2.

High priority enhancements

  • Fixed an issue related to resuming a logical replication slot where, in rare cases, it could cause the slot to become stuck.

  • Fixed an issue that would result in a restart when creating a database in a tablespace.

  • Fixed an issue related to incorrect logical replication error handling to improve DB stability.

Critical stability enhancements

  • Fixed an issue related to replication origins that in rare cases might result in longer recovery time and impact availability.

  • Fixed an issue that in rare cases may cause transactions to be partially replicated by newly created logical replication slots. For more information, see Potential data loss due to race condition during logical replication slot creation.

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

Additional improvements and enhancements

  • Updated the following extensions:

    • pg_tle extension to version 1.3.4.

    • PLV8 extension to version 3.1.10.

    • RDKit Cartridge to version Release_2023_09_4.

  • New GUC Parameters has been added

    • pgtle.clientauth_databases_to_skip

    • pgtle.clientauth_db_name

    • pgtle.clientauth_num_parallel_workers

    • pgtle.clientauth_users_to_skip

    • pgtle.enable_clientauth

    • pgtle.passcheck_db_name

PostgreSQL 13.13

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.13. For more information about the improvements in PostgreSQL 13.13, see PostgreSQL release 13.13.

Aurora PostgreSQL 13.13.4, June 24, 2024

General enhancements

  • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

High priority enhancements

  • Fixed an issue with Parallel query execution in which a backend may get into indefinite hang in certain cases.

  • Fixed a crash with execution of pltsql user defined functions.

  • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

Critical stability enhancements

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

Aurora PostgreSQL 13.13.3, March 13, 2024

General enhancements

  • Fixed a performance degradation issue in PLV8 extension.

Aurora PostgreSQL 13.13.2, February 22, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue where pg_stat_statements can block minor version upgrade during ZDP.

  • Fixed an issue where a logical replication slot would no longer emit changes due to an overly strict data consistency check.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 13.13.0, December 21, 2023

Following the announcement of updates to the PostgreSQL database by the open source community, we have updated Amazon Aurora PostgreSQL-Compatible Edition to support PostgreSQL versions 15.5, 14.10, 13.13, and 12.17. These releases contain product improvements and bug fixes made by the PostgreSQL community, along with Aurora-specific improvements. New features and improvements for Babelfish for Aurora PostgreSQL version 3.4 are also included.

Refer to the Aurora version policy to help you to decide how often to upgrade and how to plan your upgrade process. As a reminder, if you are running any version of Amazon Aurora PostgreSQL version 11, you must upgrade to a newer major version by February 29, 2024.

New features

  • Amazon Bedrock integration – By using the Amazon Aurora machine learning extension with your Aurora PostgreSQLDB cluster, you can now use Amazon Bedrock foundational AI models.

  • Delegated Extension Support – This feature allows delegating extension management to lower privileged user with the new rds_extension role.

  • Query Plan Management (QPM) enhancements:

    • Plan outlines will be updated to the latest format version as part of the update_plan_hash action for apg_plan_mgmt.validate_plans().

    • Support was added for parallel append enforcement as a part of parallel query enforcement.

  • Added support for the HypoPG extension at version 1.4.0.

  • Added support for the h3-pg extension and the h3-postgis extension at version 4.1.3.

High priority enhancements

  • Fixed an issue which may cause an Aurora replica to reboot when reading a page which was modified during WAL replay

  • Fixed an issue where if a specific volume metadata is invalid on a source cluster, it will remain invalid on a cloned cluster. Since the clone cluster uses a new volume, the metadata will now be recreated.

  • Fixed an issue which could, in rare cases, lead to an engine unavailable condition following a minor or patch version upgrade

  • Fixed a bug that may cause an engine crash during zero-downtime patching (ZDP)

  • Introduced a new parameter, rds.enable_memory_management, which is used to enable and disable the improved memory management feature.

  • Backported fixes for the following PostgreSQL community security issues:

General enhancements

  • Fixed an issue which may cause an Aurora replica to reboot while reconnecting with the writer DB instance.

  • Added support for the rdkit.morgan_fp_size parameter

  • rds-superuser can now run the pg_stat_reset_slru function

  • Fixed an issue where MultiXact SLRU accesses were not credited to the correct pg_stat_slru category.

  • Fixed an issue which may cause unused WAL segements to not be properly removed

  • Fixed an issue where pglogical does not correctly pass-through replication origin data when using the binary output format

  • rds_superuser can now execute ALTER COLLATION to refresh the collation version of a locale in the catalog.

  • Fixed a crash in dblink and postgres_fdw extensions due to invalid connections

  • Fixed an issue where the aws_s3 extension can import HTTP error responses into the table

  • Record the version of the AWS independent default collation library version in pg_collation catalog.

Additional improvements and enhancements

  • Updated the following extensions:

    • mysql_fdw to version 2.9.1

    • Oracle_fdw to version 2.6.0

    • Orafce to version 4.6.0

    • pg_cron to version 1.6.0

    • pg_hint_plan to version 1.3.9

    • pg_proctab to version 0.0.10

    • plv8 to version 3.1.8

    • PostGIS to version 3.4.0

    • prefix to version 1.2.10

    • RDKit to version 4.4.0 (Release_2023_09_1)

For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 13.

PostgreSQL 13.12

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.12. For more information about the improvements in PostgreSQL 13.12, see PostgreSQL release 13.12.

Aurora PostgreSQL 13.12.7, June 25, 2024

General enhancements

  • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

High priority enhancements

  • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

Critical stability enhancements

  • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

Aurora PostgreSQL 13.12.6, March 13, 2024

General enhancements

  • Fixed a performance degradation issue in PLV8 extension.

Aurora PostgreSQL 13.12.5, February 22, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue where pg_stat_statements can block minor version upgrade during ZDP.

  • Fixed an issue where a logical replication slot would no longer emit changes due to an overly strict data consistency check.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 13.12.2, December 13, 2023

Critical stability enhancements
General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 13.12.1, November 09, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

General enhancements

  • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

Aurora PostgreSQL 13.12.0, October 24, 2023

New features

  • Added support for mysql_fdw version 2.9.0

  • Added support in the aws_s3 extension for exporting to an S3 bucket encrypted with a customer managed KMS key

  • Improved the availability of Aurora replicas in the global DB secondary clusters

  • Added support for query plan capture on Aurora replicas

  • Added support for query plan enforcement with parallel query operators

  • Allowed query plans under a given cost threshold to not be captured

High priority enhancements

  • Included optimizations to improve the time to scale up in Aurora Serverless instances

General enhancements

  • Fixed an issue in the aws_s3 extension where the number of rows exported is incorrectly reported when the total number exceeds 2 billion

  • Provided options to configure timeouts in the aws_s3 extension. By setting the following parameters (GUCs), customers will now be able to change the timeout thresholds for imports from S3:

    • aws_s3.curlopt_low_speed_limit

    • aws_s3.curlopt_low_speed_time

  • Prevented instance creation failure in some edge cases

  • Improved the performance of replay of commit transaction operations on Aurora replicas

  • Fixed an issue where, in rare cases, an import from the aws_s3 extension fails to complete

  • Updated the GEOS library for PostGIS to version 3.12.0

  • Improved Aurora Serverless v2 database memory scaling which reduces the overall database instance scale time

  • Added the WAIT_EVENT_Aurora_CLUSTER_CACHE_MANAGER_SENDER wait event to denote wait times in the cluster cache manager sender

  • Added the WAIT_EVENT_Aurora_SERVERLESS_MONITORING_MAIN wait event to denote wait times in Aurora Serverless resource monitoring

  • Fixed an issue where the database may crash during the start of a logical replication slot

  • Increased the limit for pg_cron cron.max_running_jobs parameter from 100 to 1000

  • Fixed a bug in CREATE TABLE command to handle table name starting with '#' correctly.

Additional improvements and enhancements

  • Updated the following extensions:

    • orafce to version 4.3.0

    • pg_logical to version 2.4.3

    • pgvector to version 0.5.0

    • PostGIS to version 3.3.3

    • RDKit to version 4.3

For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 13.

PostgreSQL 13.11

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.11. For more information about the improvements in PostgreSQL 13.11, see PostgreSQL release 13.11.

Aurora PostgreSQL 13.11.6, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 13.11.5, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue that would cause a logical replication slot to transiently error out in the presence of aborted subtransactions and DDL.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 13.11.4, December 14, 2023

Critical stability enhancements
General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 13.11.3, November 14, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

General enhancements

  • Fixed an issue that could result in read replica lag due to stale metadata

  • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

Aurora PostgreSQL 13.11.2, October 4, 2023

High priority stability enhancements

  • Backported a fix for the following PostgreSQL community security issue:

High priority enhancements

  • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads.

  • Fixed an issue which can cause vacuum operations to become blocked after the restart of an Aurora replica.

  • Fixed an issue that would cause a crash when executing the COPY FROM command.

  • Fixed an issue that would cause high CPU usage and prevent new connections.

  • Fixed an issue where UPDATE and DELETE from a table with foreign key could fail unexpectedly with "ERROR: 40001: could not serialize access due to concurrent update when using Serializable snapshot".

General enhancements

  • Introduced diagnostics for the transient metadata used for I/O.

  • Fixed an issue that prevented the enablement of improved memory management in certain scenarios in Aurora PostgreSQL 15.3.

Aurora PostgreSQL 13.11.0, July 13, 2023

Following the announcement of updates to the PostgreSQL database by the open source community, we have updated Amazon Aurora PostgreSQL-Compatible Edition to support PostgreSQL versions 15.3, 14.8, 13.11, 12.15, and 11.20. These releases contains product improvements and bug fixes made by the PostgreSQL community, along with Aurora-specific improvements. The releases also contain new features and improvements for Babelfish for Aurora PostgreSQL version 3.2, and improved support for AWS Database Migration Service. Refer to the Amazon Aurora versions to help you to decide how often to upgrade and how to plan your upgrade process. As a reminder, if you are running any version of Amazon Aurora PostgreSQL 11, you must upgrade to a newer major version by February 29, 2024.

New features

  • This release contains memory management improvements which increase database stability and availability by proactively preventing issues caused by insufficient memory. For more information, see Improved memory management in Aurora PostgreSQL.

  • Added support for the pgvector extension version 0.4.1.

High priority enhancements

  • Fixed an issue with the subtransaction metadata handling when performing a survivable reader reconnect.

  • Fixed an issue during ZDP which is related to the extension environment variables.

  • Addressed a transient error during logical replication that caused a process to incorrectly calculate that it had encountered an unexpected page.

  • Fixed an issue which causes a period of unavailability due to a partially created replication origin state file.

General enhancements

  • Added a new function, aurora_stat_memctx_usage(), to show backend memory use breakdown at a Postgres memory context level.

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters (GUCs), customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms.

    • aws_lambda.request_timeout_ms.

  • Fixed an issue with the calculation of the AuroraReplicaLag metric.

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots.

  • Further reduced the database downtime during ZDP.

  • Fixed a bug which can cause unavailability during ZDP.

  • Fixed an issue which caused pg_ls_waldir() to return "ERROR: could not stat file".

  • Added support for TLS 1.3 with ciphers TLS_AES_128_GCM_SHA256 and TLS_AES_256_GCM_SHA384.

  • Addressed an issue that blocked a major version upgrade on the Aurora replica of an RDS for PostgreSQL DB instance.

  • Fixed an issue that could prevent scaling in Aurora Serverless v2 instances.

  • Fixed an issue in the pg_vector extension where, in rare cases, infinite or NAN values caused a crash during the index creation.

  • Fixed an issue to improve the performance.

  • Upgraded GEOS to version 3.11.2.

  • Upgraded pg_cron to version 1.5.

  • Upgraded pg_partman to version 4.7.3.

  • Upgraded plv8 to version 3.1.6.

  • Upgraded tds_fdw to 2.0.3.

PostgreSQL 13.10

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.10. For more information about the improvements in PostgreSQL 13.10, see PostgreSQL release 13.10.

Aurora PostgreSQL 13.10.8, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 13.10.7, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Fixed an issue that would cause a logical replication slot to transiently error out in the presence of aborted subtransactions and DDL.

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 13.10.6, December 15, 2023

Critical stability enhancements
General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 13.10.5, November 14, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

General enhancements

  • Fixed an issue that could result in read replica lag due to stale metadata

  • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

Aurora PostgreSQL 13.10.4, October 5, 2023

High priority stability enhancements

  • Backported a fix for the following PostgreSQL community security issue:

High priority enhancements

  • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads.

  • Fixed an issue which can cause vacuum operations to become blocked after the restart of an Aurora replica.

  • Fixed an issue that would cause high CPU usage and prevent new connections.

General enhancements

  • Introduced diagnostics for the transient metadata used for I/O.

Aurora PostgreSQL 13.10.3, July 24, 2023

General enhancements

  • Fixed an issue with the calculation of the AuroraReplicaLag metric.

  • Fixed a bug which can cause unavailability during ZDP.

  • Fixed an issue that prevented reclaiming storage on transaction commits.

  • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase.

  • Added Aurora Serverless v2 scaling enhancements.

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots.

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters (GUCs), customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms.

    • aws_lambda.request_timeout_ms.

  • Fixed multiple issues which can cause Aurora replicas with the improved read availability feature to restart when reconnecting with the writer instance.

  • Fixed an issue preventing a survivable reader reconnect.

Aurora PostgreSQL 13.10.2, May 10, 2023

General enhancements

  • Fixed an error when loading the test_decoding plugin in pg_create_logical_replication_slot.

  • Fixed an issue that causes logical replication to fail when using write-through cache.

  • Updated the Oracle client used by the oracle_fdw extension to version 21.9.0.0.0.

Aurora PostgreSQL 13.10.1, April 5, 2023

New features

  • Introduced a new QPM plan hash calculation for multi-schema support. If users want to use QPM in multi-schema environments, they can set the apg_plan_mgmt.plan_hash version to 2 and call apg_plan_mgmt.validate_plans('update_plan_hash').

General enhancements

  • Upgraded PROJ support to version 9.1.0.

  • Upgraded the GDAL library in PostGIS to version 3.5.3.

  • Added support for the TCN and SEG extensions.

  • Improved performance of deletes from b-tree and hash indexes on Aurora replicas.

  • Includes Aurora Serverless v2 scaling enhancements.

  • Fixed an issue in QPM that prevented the enforcement of approved plans when joining partitioned tables.

  • Fixed an issue that caused incorrect buffer hit counts in EXPLAIN.

  • Improved the engine startup time, particularly on large instances with many objects.

  • The Aurora function aurora_stat_logical_wal_cache() is now visible to all users.

  • Fixed an issue in QPM that could cause unavailability when enforcing plans from prepared statements.

Additional improvements and enhancements

  • Updated the following extensions:

    • hll to version 2.17

    • Oracle_fdw to version 2.5.0

    • orafce to version 4.0.0

    • pg_cron to version 1.4.2

    • pg_hint_plan to version 1.3.8

    • pg_logical to version 2.4.2

    • pg_trgm to version 1.4

    • pgrouting to version 3.4.1

    • PostGIS to version 3.3.2

    • SEG to version 1.0

    • TCN to version 1.0

    • wal2json to version 2.5

PostgreSQL 13.9

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.9. For more information about the improvements in PostgreSQL 13.9, see PostgreSQL release 13.9.

Aurora PostgreSQL 13.9.9, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

  • Fixed a V8 Engine CVE-2018-6065 for PLV8 2.x.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 13.9.8, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 13.9.7, December 15, 2023

Critical stability enhancements
General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 13.9.6, November 17, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

Aurora PostgreSQL 13.9.5, October 04, 2023

Critical stability enhancements
High priority stability enhancements

  • Fixed an issue which can cause a database instance to restart while executing IO intensive read workloads.

  • Fixed an issue that would cause high CPU usage and prevent new connections.

General enhancements

  • Introduced diagnostics for the transient metadata used for I/O.

Aurora PostgreSQL 13.9.4, September 13, 2023

General enhancements

  • Added Aurora Serverless v2 scaling enhancements.

  • Fixed an issue in pg_cron which can prevent scaling in Aurora Serverless v2.

  • Fixed an issue with the calculation of the AuroraReplicaLag metric.

  • Fixed a bug which can cause unavailability during ZDP.

  • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase.

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots.

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms.

    • aws_lambda.request_timeout_ms.

Aurora PostgreSQL 13.9.2, March 3, 2023

Critical stability enhancements

  • Backported a fix for the following PostgreSQL community security issue:

General stability enhancements

  • Fixed an issue where the approved plans for joins with partitioned tables weren't being enforced.

  • Fixed an issue in PostGIS where the GDAL data wasn't loading.

  • Fixed an issue that increased the amount of recovery work during startup if logical replication is enabled.

  • Fixed an issue with the aws_s3 extension where loading a large number of records can time out.

  • Fixed an issue that causes logical replication to fail when using write-through cache

Aurora PostgreSQL 13.9.0, January 20, 2023

High priority stability enhancements

  • Fixed an issue where an upgrade fails because the oldest MultiXactId is updated incorrectly.

  • Fixed an issue where the commit latency metrics weren't updated.

  • Fixed an issue that could lead to a brief period of unavailability.

General stability enhancements

  • Fixed an issue that caused DB instance migration failures.

  • Fixed an issue where the DB fails to start because of an inconsistency in the metadata.

  • Improved the error handling and diagnosability.

  • Upgraded the RDKit extension to version 4.2.

  • Upgraded the GDAL library to version 3.4.3.

  • Fixed an issue where the cluster cache management process doesn't shutdown gracefully.

  • Fixed an issue that can cause certain processes to linger in an inconsistent state during a clean shutdown.

  • Fixed an issue with the pg_repack extension.

  • Improved the collation library (glibc) handling with a new independent default collation library.

PostgreSQL 13.8

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.8. For more information about the improvements in PostgreSQL 13.8, see PostgreSQL release 13.8.

Aurora PostgreSQL 13.8.7, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 13.8.6, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 13.8.5, December 18, 2023

Critical stability enhancements
General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 13.8.4, November 17, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

Aurora PostgreSQL 13.8.3, October 17, 2023

High priority stability enhancements
High priority enhancements

  • Fixed an issue which blocked vacuum operations after the restart of an Aurora replica.

  • Fixed an issue that would cause high CPU usage and prevent new connections.

General stability enhancements

  • Fixed an issue which causes the stats collector process to repeatedly restart.

  • Improved the scale times for Aurora Serverless v2.

  • Fix a bug which can cause unavailability during ZDP.

  • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase.

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an S3 bucket with a name containing dots.

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms.

    • aws_lambda.request_timeout_ms.

  • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads.

  • Fixed an issue that causes logical replication to fail when using write-through cache

Aurora PostgreSQL 13.8.2, March 2, 2023

General stability enhancements

  • Fixed an issue where the approved plans for joins with partitioned tables weren't being enforced.

  • Fixed an issue that increased the amount of recovery work during startup if logical replication is enabled.

  • Fixed an issue with the aws_s3 extension where loading a large number of records can time out.

  • Fixed an issue with the pg_cron parallel running of tasks.

Aurora PostgreSQL 13.8.1, December 13, 2022

General stability enhancements

  • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

  • Fixed an issue where the engine experiences stability issues during database minor and patch release upgrades.

  • Fixed an issue that could cause data inconsistency during replication.

Aurora PostgreSQL 13.8.0, November 09, 2022

High priority stability enhancements

  • Fixed an Aurora Serverless v2 scaling issue.

  • Fixed an issue which caused Aurora Serverless v2 shrink failure.

General stability enhancements

  • Improved buffer cache scavenging when the buffer cache is in duress.

  • Fixed an issue in Database Activity Streams that leads to high memory consumption.

  • Fixed an issue that caused DB instance restarts.

  • Fixed an issue where a DB instance restarts recursively while generating monitoring metrics during a crash.

  • Fixed an issue where a DB instance restarted during performance metric collection.

  • Fixed an issue where an attempt to connect to the database would fail with SSLV3_ALERT_CERTIFICATE_UNKNOWN.

  • Improved the error reporting in case of an inconsistent B-tree index.

  • Improved the diagnostic logging around setting invalid hint bits.

  • Fixed an issue where autovacuum would incorrectly skip tables.

  • Improved the logical replication prefetching.

  • Fixed a durability issue in the GIN indexes.

  • Provided options to configure MultiXact SLRU cache. By setting the following parameters (GUCs), customers will now be able to change the MultiXact SLRU cache sizes:

    • multixact_members_cache_size

    • multixact_offsets_cache_size

  • Fixed an issue to detect and cancel stuck major version upgrades.

  • Fixed an issue in hash join that could lead to increased memory consumption.

  • Improved the logical replication performance.

  • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

  • Upgraded the GEOS version to 3.10.3.

  • Updated the PLV8 version to 3.0.0.

  • Updated the PostGIS extension to version 3.2.3.

  • Fixed an issue with st_orientedenvelope that caused it to loop with a 1-D input to return 0.

  • Fixed an issue where the connection to SQL Server using tds_fdw fails.

PostgreSQL 13.7

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.7. For more information about the improvements in PostgreSQL 13.7, see PostgreSQL 13.7.

Aurora PostgreSQL 13.7.10, August 7, 2024

Critical stability enhancements

  • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

  • Fixed a V8 Engine CVE-2018-6065 for PLV8 2.x.

General enhancements

  • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

Aurora PostgreSQL 13.7.9, March 13, 2024

General enhancements

  • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

High priority enhancements

  • Backported fixes for the following PostgreSQL community security issue:

Critical stability enhancements

  • Fixed an issue related to apg_plan_mgmt.

  • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

  • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

Aurora PostgreSQL 13.7.8, December 22, 2023

Critical stability enhancements
General stability enhancements

  • Fixed an issue with logical replication actions being performed by someone other than the table owner

Aurora PostgreSQL 13.7.7, November 17, 2023

Critical stability enhancements

  • Backported a fix for the following security issue:

  • Fixed an issue related to pg_cron background worker processes

Aurora PostgreSQL 13.7.6, October 19, 2023

High priority stability enhancements
High priority enhancements

  • Fixed an issue which blocked vacuum operations after the restart of an Aurora replica.

  • Fixed an issue that would cause high CPU usage and prevent new connections.

General stability enhancements

  • Fixed an issue which causes the stats collector process to repeatedly restart.

  • Improved the scale times for Aurora Serverless v2.

  • Fix a bug which can cause unavailability during ZDP.

  • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase.

  • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an S3 bucket with a name containing dots.

  • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

    • aws_lambda.connect_timeout_ms.

    • aws_lambda.request_timeout_ms.

Aurora PostgreSQL 13.7.5, December 14, 2022

General stability enhancements

  • Fixed an issue where the engine experiences stability issues during database minor and patch release upgrades.

  • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

  • Fixed an issue that could cause data inconsistency during replication.

Aurora PostgreSQL 13.7.4, November 17, 2022

High priority stability enhancements

  • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

Aurora PostgreSQL 13.7.3, October 13, 2022

High priority stability enhancements

  • Fixed a PLV8 issue where the base parameter doesn't get loaded properly into the memory.

  • Fixed an issue where scaling an Aurora Serverless v2 instance gets stuck if VACUUM is running.

General stability enhancements

  • Fixed a bug where Aurora PostgreSQL can't file the relfilenode.

  • Fixed a database restart issue when a plan gets invaliated but the engine still checks if it is valid.

  • Fixed a stuck scaling issue when the current scaling events time out.

  • Upgraded the PostGIS extension to version 3.1.7.

  • Fixed an issue where extended query messages might be lost during zero-downtime patching (ZDP) causing the extended query to hang after the ZDP completion.

Aurora PostgreSQL 13.7.1, July 6, 2022

Critical stability enhancements

  • Fixed an issue that could cause periods of unavailability during a storage node restart.

High priority stability enhancements

  • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

  • Fixed an issue when the connection to SQL Server fails using the TDS_FDW extension to query a foreign table.

  • Fixed an issue that caused connections using the provided root certificate to fail.

  • Improved the diagnostic and supportability information in case of inconsistent B-tree index entries.

Aurora PostgreSQL 13.7.0, June 9, 2022

New features
Critical updates

  • Fixed a replay crash due to an LSN mismatch

  • Fixed the aws_s3 extension to prevent invalid region injection

High stability updates

  • Fixed multiple issues related to out-of-memory conditions which could result in brief periods of unavailability

  • Fixed an Aurora Serverless v2 scaling issue.

General enhancements

  • Fixed a lock contention crash during an Aurora Serverless v1 scaling event.

  • Fixed an issue where logical replication becomes stuck after a restart.

  • Fixed multiple issues that could lead to brief periods of unavailability.

  • Fixed a crash in pg_cron due to a task still running but being unscheduled.

  • Fixed, during redo, an invalid page hit on the Generic Redo for GENERIC_XLOG_FULL_PAGE_DATA. This happens due to a timing hole between generating the log record and then writing the metadata for the record on the RW node and the RO node replays between those operations.

  • Improved the query performance by supporting parallel workers.

  • Upgraded the plugin wal2json version to 2.4.

  • Upgraded the pglogical extension to version 2.4.1.

PostgreSQL 13.6 (Deprecated)

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.6. For more information about the improvements in PostgreSQL 13.6, see PostgreSQL release 13.6.

Aurora PostgreSQL 13.6.6, December 16, 2022

General enhancements

  • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

  • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

Aurora PostgreSQL 13.6.5, October 18, 2022

High priority enhancements

  • Fixed an issue where Amazon Aurora Serverless v2 scaling may get blocked if VACUUM is running.

  • Fixed an issue where Amazon Aurora Serverless v2 scaling may get blocked on Aurora replicas.

General enhancements

  • Improved the diagnostic and supportability information in case of inconsistent B-tree index entries.

  • Updated the PostGIS extension to version 3.1.7.

Aurora PostgreSQL 13.6.4, July 18, 2022

Security enhancements

  • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

Critical enhancements

  • Fixed an issue during a storage node restart that could result in periods of unavailability.

High priority stability enhancements

  • Fixed an error handling issue related to out-of-memory conditions that could result in brief periods of unavailability.

  • Fixed an issue related to the existence of duplicate relation files that could result in periods of unavailability.

  • Fixed a defect where the validation of cached plans may lead to a database restart when the plan was previously invalidated.

Aurora PostgreSQL 13.6.3, June 2, 2022

Security enhancements

  • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

High priority stability updates

  • Fixed an issue that can lead to a blocked scale operation when a COPY command is in progress in Amazon Aurora Serverless v2.

  • Fixed an issue that can cause a restart of the database when dropping or truncating tables in Amazon Aurora Serverless v2.

  • Fixed an issue in the apg_prewarm extension that can lead to a blocked scale operation in Amazon Aurora Serverless v2.

  • Fixed an issue in the dynamic shared memory allocation that can lead to a blocked scale operation in Amazon Aurora Serverless v2.

  • Fixed an issue that can cause a restart of the postmaster process in Amazon Aurora Serverless v2.

  • Fixed an issue where a minor version ugprade may get blocked when there is a SQL view that refers to the checksum() function in Babelfish for Aurora PostgreSQL.

  • Fixed an issue in apg_plan_mgmt that can cause a restart when Query Plan Management (QPM) is enabled.

Aurora PostgreSQL 13.6.2, May 12, 2022

High priority stability enhancements

  • Fixed an issue that causes upgrades to fail when Babelfish for Aurora PostgreSQL is enabled.

  • Fixed an issue that causes scaling in Aurora Serverless v2 to fail.

General enhancements

  • Fixed an issue that could cause unavailability due to improper locking of shared memory.

Aurora PostgreSQL 13.6.1, April 27, 2022

High priority stability enhancements

  • Fixed an issue that could cause incorrect WriteIOPS reporting in the AWS console.

  • Fixed an issue that could cause unavailability after removal of a read node from a cluster.

General enhancements

  • Fixed an issue that could cause an engine restart during periods of low free memory.

Aurora PostgreSQL 13.6.0, March 29, 2022

New features

  • Added support for the tds_fdw extension version 2.0.2.

High priority stability enhancements

  • Fixed multiple issues that may result in unavailability of a read node.

  • Fixed an issue that may result in a read node being unable to replay WAL requiring the replication slot to be dropped and resynchronized.

  • Fixed an issue that could cause excess storage use due to files not being properly closed.

General enhancements

  • Fixed a small memory leak on read nodes when commit_ts is set.

  • Fixed an issue that caused Performance Insights to show "Unknown wait event".

  • Fixed an issue that could cause an import from Amazon S3 to fail when using the aws_s3 extension

  • Fixed multiple issues that could result in periods of unavailability when using apg_plan_mgmt

  • Fixed multiple issues that could result in periods of unavailability when QPM is enabled

PostgreSQL 13.5 (Deprecated)

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.5. For more information about the improvements in PostgreSQL 13.5, see PostgreSQL release 13.5.

Aurora PostgreSQL 13.5.7, August 24, 2023

General enhancements

  • Fixed an issue which causes the stats collector process to repeatedly restart.

  • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase.

Aurora PostgreSQL 13.5.6, December 16, 2022

General enhancements

  • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

  • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

Aurora PostgreSQL 13.5.5, October 18, 2022

General enhancements

  • Improved the diagnostic and supportability information in case of inconsistent B-tree index entries.

  • Updated the PostGIS extension to version 3.1.7.

Aurora PostgreSQL 13.5.4, July 20, 2022

Security enhancements

  • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

Critical enhancements

  • Fixed an issue during a storage node restart that could result in periods of unavailability.

High stability enhancements

  • Fixed an error handling issue related to out-of-memory conditions that could result in brief periods of unavailability.

  • Fixed an issue related to the existence of duplicate relation files that could result in periods of unavailability.

  • Fixed an issue that could cause excess storage use due to files not being properly closed.

  • Fixed an issue that can cause a restart of the postmaster process in Amazon Aurora Serverless v2.

  • Fixed an issue that caused Performance Insights to show "Unknown wait event".

Aurora PostgreSQL 13.5.3, April 13, 2022

Security enhancements

  • Additional modifications to the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

General enhancements

  • Fixed a bug that could cause an engine restart during periods of low free memory.

Aurora PostgreSQL 13.5.1, March 3, 2022

Security enhancements

  • Updated the PostGIS extension from version 3.1.4 to 3.1.5. This update contains a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

  • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

  • Modified the pg_bigm extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

  • Modified the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

Aurora PostgreSQL 13.5.0, February 25, 2022

High priority stability enhancements

  • Fixed a bug where logical replication may hang resulting in the replay falling behind on the read node. The instance may eventually restart.

Additional improvements and enhancements

  • Added the Buffers: shared hit metric to the Explain output.

  • Fixed a buffer cache bug that could cause brief periods of unavailability.

  • Fixed a bug in the apg_plan_mgmt extension where an index based plan was not being enforced.

  • Fixed a bug in the pg_logical extension that could cause brief periods of unavailability due to improper handling of NULL arguments.

  • Fixed a bug that could cause brief periods of unavailability due to reading uninitialized pages.

  • Fixed an issue where orphaned files caused major version upgrades to fail.

  • Fixed incorrect Aurora Storage Daemon log write metrics.

  • Fixed multiple bugs that could result in WAL replay falling behind and eventually causing the reader instances to restart.

  • Improved the Aurora buffer cache page validation on reads.

  • Improved the Aurora storage metadata validation.

This version also includes the following change:

  • The pg_cron extension is updated to 1.4.1

For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 13.

PostgreSQL 13.4 (Deprecated)

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.4. For more information about the improvements in PostgreSQL 13.4, see PostgreSQL release 13.4.

Aurora PostgreSQL 13.4.6, December 19, 2022

General enhancements

  • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

Aurora PostgreSQL 13.4.5, October 18, 2022

General enhancements

  • Improved the diagnostic and supportability information in case of inconsistent B-tree index entries.

  • Updated the PostGIS extension to version 3.1.7.

Aurora PostgreSQL 13.4.4, July 6, 2022

Security enhancements

  • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

General enhancements

  • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

  • Fixed an issue that could cause excess storage use due to files not being properly closed.

  • Fixed an issue that could cause a restart of the postmaster process in Amazon Aurora Serverless v2.

  • Fixed an issue that could cause Performance Insights to display "Unknown wait event".

  • Fixed an issue that could result in periods of unavailability due to the existence of duplicate relation files.

Aurora PostgreSQL 13.4.2, April 12, 2022

Security enhancements

  • Additional modifications to the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

General enhancements

  • Fixed a buffer cache bug that could cause brief periods of unavailability.

Aurora PostgreSQL 13.4.1

Security enhancements

  • Updated the PostGIS extension from version 3.1.4 to 3.1.5. This update contains a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

  • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

  • Modified the pg_bigm extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

  • Modified the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

Aurora PostgreSQL 13.4.0

New features

  • This version supports Babelfish 1.0.0 which extends your Amazon Aurora PostgreSQL database with the ability to accept database connections from Microsoft SQL Server clients. For more information, see Working with Babelfish for Aurora PostgreSQL.

Critical stability enhancements

  • Fixed an issue where, in rare circumstances, a data cache of a read node may be inconsistent following a restart of that node.

High priority stability enhancements

  • Fixed an issue where queries may become unresponsive due to I/O resource exhaustion triggered by prefetch.

  • Fixed an issue where Aurora may flag an issue following a major version update with the message: "PANIC: could not access status of next transaction id xxxxxxxx".

Additional improvements and enhancements

  • Fixed an issue where read nodes restart due to a replication origin cache lookup failure.

  • Fixed an issue where read queries may time out on read nodes during the replay of lazy truncation triggered by vacuum on the write node.

  • Fixed an issue that causes Performance Insights to incorrectly set the backend type of a database connection.

  • Fixed an issue where the aurora_postgres_replica_status() function returned stale or lagging CPU stats.

  • Fixed an issue where the role rds_superuser did not have permission to execute the pg_stat_statements_reset() function.

  • Fixed an issue with the apg_plan_mgmt extension where the planning and execution times were reported as 0.

  • Removed support for the DES, 3DES, and RC4 cipher suites.

  • Updated the PostGIS extension to version 3.1.4.

  • Updated the pgrouting extension to 3.1.3.

  • Updated the pglogical extension to 2.4.0.

  • Added support for the following SPI module extensions:

    • autoinc version 1.0

    • insert_username version 1.0

    • moddatetime version 1.0

    • refint version 1.0

  • Fixed multiple issues in the Aurora storage daemon that could lead to brief periods of unavailability when specific network configurations are used.

  • Fixed an out-of-memory crash issue with Aurora storage daemon that leads to writer node restart. This also reduces the overall system memory consumption.

PostgreSQL 13.3 (Deprecated)

This release of Aurora PostgreSQL is compatible with PostgreSQL 13.3. For more information about the improvements in PostgreSQL 13.3, see PostgreSQL release 13.3.

Aurora PostgreSQL 13.3.5, December 30, 2022

General enhancements

  • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

Aurora PostgreSQL 13.3.4, July 14, 2022

Security enhancements

  • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

High priority stability enhancements

  • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

  • Fixed an issue that could cause excess storage use due to files not being properly closed.

  • Fixed an issue that caused Performance Insights to show "Unknown wait event".

Aurora PostgreSQL 13.3.3, April 7, 2022

Security enhancements

  • Includes additional modifications to the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

Aurora PostgreSQL 13.3.2

Security enhancements

  • Modified the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

  • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

  • Backpatched postgis to PostGIS 3.0.3. This is a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

Aurora PostgreSQL 13.3.1

Releases and patches
    Security enhancements

    • Modified the pg_bigm extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Critical stability enhancements

    • Fixed an issue where, in rare circumstances, a data cache of a read node may be inconsistent following a restart of that node.

    High priority stability enhancements

    • Fixed an issue where queries may become unresponsive due to I/O resource exhaustion triggered by prefetch.

    • Fixed an issue where Aurora may flag an issue following a major version update with the message: "PANIC: could not access status of next transaction id xxxxxxxx".

    Additional improvements and enhancements

    • Fixed an issue where read nodes restart due to a replication origin cache lookup failure.

    • Fixed an issue with the apg_plan_mgmt extension where the planning and execution times were reported as 0.

    • Fixed an issue that causes Performance Insights to incorrectly set the backend type of a database connection.

    • Fixed an issue with the apg_plan_mgmt extension where plan outline on a partitioned table did not enforce an index-based plan.

    • Fixed an issue where orphaned files caused failed translations in read codepaths during or after a major version upgrade.

    • Fixed multiple issues in the Aurora storage daemon that could lead to brief periods of unavailability when specific network configurations are used.

    • Fixed an out-of-memory crash issue with Aurora storage daemon that leads to writer node restart. This also reduces the overall system memory consumption.

    Aurora PostgreSQL 13.3.0

    New features

    • Supports a major version upgrade from Aurora PostgreSQL 4.0.0 and later versions

    • Supports bool_plperl version 1.0

    • Supports rds_tools version 1.0

    Critical stability enhancements

    • Fixed an issue where, in rare circumstances, a data cache of a read node may be inconsistent following a restart of that node.

    Additional improvements and enhancements

    • Contains several improvements that were announced for PostgreSQL releases 13.0, 13.1, 13.2 and 13.3

    • Instance type R4 was deprecated.

    • Updated the following extensions:

      • hll to version 2.15.

      • hstore to version 1.7.

      • intarray to version 1.3.

      • log_fdw to version 1.2.

      • ltree to version 1.2.

      • pg_hint_plan to version 1.3.7.

      • pg_repack to version 1.4.6.

      • pg_stat_statements to version 1.8.

      • pg_trgm to version 1.5.

      • pgaudit to version 1.5.

      • pglogical to version 2.3.3.

      • pgrouting to version 3.1.0

      • plcoffee to version 2.3.15.

      • plls to version 2.3.15.

      • plv8 to version 2.3.15.

    PostgreSQL 12 versions (includes some deprecated versions)

    PostgreSQL 12.20

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.20. For more information about the improvements in PostgreSQL 12.20, see PostgreSQL release 12.20.

    Aurora PostgreSQL 12.20, September 30, 2024

    New features for 12.20.

    • Introduced a new fast failover feature to reduce database downtime during the planned extension failover events with fast storage metadata initialization and fast buffer cache recovery.

    • Introduced an optimization to reduce Zero Downtime Patching (ZDP) quiet point duration to 1 second.

    Critical stability enhancements for 12.20.

    High priority enhancements for 12.20.

    • Fixed issues where the replication of vacuum operations may cause a restart when handling conflicts with user queries.

    • Fixed an issue where deleting a large range of keys from a BTree index could cause concurrent scans to crash.

    General enhancements for 12.20.

    • Enabled support for FIPS-validated cryptography, a fully owned AWS implementation. For more information, see AWS-LC is now FIPS 140-3 certified on AWS Security Blog.

    • Improvements to database startup time during initialization and engine upgrades.

    • Fixed an issue that prevented the inclusion of the pg_bigm extension in shared_preload_libraries.

    • Fixed an issue during ZDP which causes some connections to be terminated due to long transferring time. A new ZDP metric in postgresql.log called ZD_SOCKET_TRANSFER_CONN_DROPPED represents these dropped connections.

    • Improved reader availability for Aurora Replicas when using system administration functions.

    • Fixed an in-memory two-phase commit (2PC) metadata caching issue that caused out-of-memory error on Aurora read replicas replicating from RDS PostgreSQL source instances.

    • Fixed an issue in storage metadata initialization that can cause prolonged database startup time.

    • Fixed an issue that will prevent reclaiming Aurora storage space during major version upgrade.

    Additional improvements and enhancements for 12.20.

    • Updated the following extensions:

      • pgvector extension to version 0.7.3.

      • mysql_fdw extension to version REL-2_9_2.

      • orafce extension to version 4.10.3.

      • pgTAP extension to version 1.3.3.

      • pg_cron extension to version 1.6.3.

      • RDKit extension to version 4.5 (Release 2024_03_5).

      • wal2json extension to version 2.6.

      • pg_ad_mapping extension to version 1.0.

      • HypoPG extension to version 1.4.1.

    PostgreSQL 12.19

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.19. For more information about the improvements in PostgreSQL 12.19, see PostgreSQL release 12.19.

    Aurora PostgreSQL 12.19, August 8, 2024

    New features

    • Introduced a feature to capture database downtime metrics during upgrades and restarts.

    General enhancements

    • Improved Aurora PostgreSQL performance for generative AI workloads using pgvector.

    • Fixed issue where minor version upgrades with ZDP would fail in some cases resulting in longer upgrade times.

    • Fixed a bug where JDBC connections may not be preserved during ZDP enabled upgrades.

    • Fixed an issue that caused two-phase commit files to remain, preventing proper cleanup.

    • Improved memory handling while processing two phase commit files.

    • Improved availability of Aurora read replicas.

    High priority enhancements

    • Fixed an issue which leads to cancellation of long-running queries on Global Database replica instances.

    Critical stability enhancements

    • Fixed a pg_repack issue that would incorrectly allow two vacuum processes to operate concurrently on the same table.

    Additional improvements and enhancements

    • Updated the following extensions:

      • orafce extension to version 4.9.4.

      • pg_cron extension to version 1.6.2.

      • pg_partman extension to version 5.1.0.

      • pg_repack extension to version 1.5.0.

      • pg_tle to version 1.4.0.

      • pg_vector extension to version 0.7.0.

      • pgrouting extension to version 3.6.2.

      • pgTap extension to version 1.3.2.

      • PostGIS extension to version 3.4.2.

      • RDKit extension to version 2024_03_1.

    PostgreSQL 12.18

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.18. For more information about the improvements in PostgreSQL 12.18, see PostgreSQL release 12.18.

    Aurora PostgreSQL 12.18.2, June 20, 2024

    General enhancements

    • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

    High priority enhancements

    • Fixed a crash with execution of pltsql user defined functions.

    • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

    Critical stability enhancements

    • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

    • Fixed an issue with background worker where it may crash when executed in parallel worker context.

    • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

    • Fixed issues in how two-phase commit files are handled.

    Aurora PostgreSQL 12.18.1, April 29, 2024

    New features

    • Added resource usage summary to pg_dump.

    General enhancements

    • Fixed multiple minor version upgrade issues to improve connection preservation with zero-downtime patching.

    • Reduced database boot time due to improved initialization time for large volumes.

    • Introduced faster COPY operations by reducing contention on the relation extension lock and proactively extending relations.

    • Improvements to reduce replication lag by intelligently skipping the replay of certain log records, thereby reducing the replay load.

    • Fixed an issue during recovery conflict on a read node which, in rare cases, could cause brief unavailability.

    • Fixed an issue where a database would fail to startup during a major version upgrade patch, in rare scenarios.

    • Improved availability of read replicas by allowing recovery from replication errors in more situations.

    • Fixed an issue that would cause zero-downtime patching to timeout.

    • Fixed a logical replication decoding issue that fails to process catalog modifying changes after spilling to storage if there was a concurrent aborted sub-transaction.

    • Improved log record validation before it is written to storage.

    • Fixed an issue that would result in sessions incorrectly reporting ClientRead wait events after a zero-downtime patching event.

    • Fixed an ambiguous function definition of aws_s3.query_export_to_s3 when upgrading the aws_s3 extension from version 1.1 to 1.2.

    High priority enhancements

    • Fixed an issue related to resuming a logical replication slot where, in rare cases, it could cause the slot to become stuck.

    • Fixed an issue that would result in a restart when creating a database in a tablespace.

    • Fixed an issue related to incorrect logical replication error handling to improve DB stability.

    Critical stability enhancements

    • Fixed an issue related to replication origins that in rare cases might result in longer recovery time and impact availability.

    • Fixed an issue that in rare cases may cause transactions to be partially replicated by newly created logical replication slots. For more information, see Potential data loss due to race condition during logical replication slot creation.

    • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

    Additional improvements and enhancements

    • Updated the following extensions:

      • pg_tle extension to version 1.3.4.

      • PLV8 extension to version 3.1.10.

      • RDKit Cartridge to version Release_2023_09_4.

    • New GUC Parameters has been added

      • pgtle.clientauth_databases_to_skip

      • pgtle.clientauth_db_name

      • pgtle.clientauth_num_parallel_workers

      • pgtle.clientauth_users_to_skip

      • pgtle.enable_clientauth

      • pgtle.passcheck_db_name

    PostgreSQL 12.17

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.17. For more information about the improvements in PostgreSQL 12.17, see PostgreSQL release 12.17.

    Aurora PostgreSQL 12.17.4, June 24, 2024

    General enhancements

    • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

    High priority enhancements

    • Fixed an issue with Parallel query execution in which a backend may get into indefinite hang in certain cases.

    • Fixed a crash with execution of pltsql user defined functions.

    • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

    Critical stability enhancements

    • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

    • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

    Aurora PostgreSQL 12.17.3, March 13, 2024

    General enhancements

    • Fixed a performance degradation issue in PLV8 extension.

    Aurora PostgreSQL 12.17.2, February 22, 2024

    General enhancements

    • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

    High priority enhancements

    • Fixed an issue where pg_stat_statements can block minor version upgrade during ZDP.

    • Fixed an issue where a logical replication slot would no longer emit changes due to an overly strict data consistency check.

    • Backported fixes for the following PostgreSQL community security issue:

    Critical stability enhancements

    • Fixed an issue related to apg_plan_mgmt.

    • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

    • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

    Aurora PostgreSQL 12.17.0, December 21, 2023

    Following the announcement of updates to the PostgreSQL database by the open source community, we have updated Amazon Aurora PostgreSQL-Compatible Edition to support PostgreSQL versions 15.5, 14.10, 13.13, and 12.17. These releases contain product improvements and bug fixes made by the PostgreSQL community, along with Aurora-specific improvements. New features and improvements for Babelfish for Aurora PostgreSQL version 3.4 are also included.

    Refer to the Aurora version policy to help you to decide how often to upgrade and how to plan your upgrade process. As a reminder, if you are running any version of Amazon Aurora PostgreSQL version 11, you must upgrade to a newer major version by February 29, 2024.

    New features

    • Amazon Bedrock integration – By using the Amazon Aurora machine learning extension with your Aurora PostgreSQLDB cluster, you can now use Amazon Bedrock foundational AI models.

    • Delegated Extension Support – This feature allows delegating extension management to lower privileged user with the new rds_extension role.

    • Query Plan Management (QPM) enhancements – Plan outlines will be updated to the latest format version as part of the update_plan_hash action for apg_plan_mgmt.validate_plans().

    • Added support for the HypoPG extension at version 1.4.0.

    • Added support for the h3-pg extension and the h3-postgis extension at version 4.1.3.

    High priority enhancements

    • Fixed an issue which may cause an Aurora replica to reboot when reading a page which was modified during WAL replay

    • Fixed an issue where if a specific volume metadata is invalid on a source cluster, it will remain invalid on a cloned cluster. Since the clone cluster uses a new volume, the metadata will now be recreated.

    • Fixed an issue which could, in rare cases, lead to an engine unavailable condition following a minor or patch version upgrade

    • Fixed a bug that may cause an engine crash during zero-downtime patching (ZDP)

    • Introduced a new parameter, rds.enable_memory_management, which is used to enable and disable the improved memory management feature.

    • Backported fixes for the following PostgreSQL community security issues:

    General enhancements

    • Fixed an issue which may cause an Aurora replica to reboot while reconnecting with the writer DB instance.

    • Added support for the rdkit.morgan_fp_size parameter

    • Fixed an issue which may cause unused WAL segements to not be properly removed

    • Fixed an issue where pglogical does not correctly pass-through replication origin data when using the binary output format

    • Fixed a crash in dblink and postgres_fdw extensions due to invalid connections

    • Fixed an issue where the aws_s3 extension can import HTTP error responses into the table

    Additional improvements and enhancements

    • Updated the following extensions:

      • mysql_fdw to version 2.9.1

      • Oracle_fdw to version 2.6.0

      • Orafce to version 4.6.0

      • pg_cron to version 1.6.0

      • pg_hint_plan to version 1.3.9

      • pg_proctab to version 0.0.10

      • plv8 to version 3.1.8

      • PostGIS to version 3.4.0

      • prefix to version 1.2.10

      • RDKit to version 4.4.0 (Release_2023_09_1)

    For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 12.

    PostgreSQL 12.16

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.16. For more information about the improvements in PostgreSQL 12.16, see PostgreSQL release 12.16.

    Aurora PostgreSQL 12.16.7, June 25, 2024

    General enhancements

    • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

    High priority enhancements

    • Fixed an issue which led to cancellation of long-running queries on Global Database replica instances.

    Critical stability enhancements

    • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

    • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

    Aurora PostgreSQL 12.16.6, March 13, 2024

    General enhancements

    • Fixed a performance degradation issue in PLV8 extension.

    Aurora PostgreSQL 12.16.5, February 22, 2024

    General enhancements

    • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

    High priority enhancements

    • Fixed an issue where pg_stat_statements can block minor version upgrade during ZDP.

    • Fixed an issue where a logical replication slot would no longer emit changes due to an overly strict data consistency check.

    • Backported fixes for the following PostgreSQL community security issue:

    Critical stability enhancements

    • Fixed an issue related to apg_plan_mgmt.

    • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

    • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

    Aurora PostgreSQL 12.16.2, December 13, 2023

    Critical stability enhancements
    General stability enhancements

    • Fixed an issue with logical replication actions being performed by someone other than the table owner

    Aurora PostgreSQL 12.16.1, November 09, 2023

    Critical stability enhancements

    • Backported a fix for the following security issue:

    • Fixed an issue related to pg_cron background worker processes

    General enhancements

    • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

    Aurora PostgreSQL 12.16.0, October 24, 2023

    New features

    • Added support for mysql_fdw version 2.9.0

    • Added support in the aws_s3 extension for exporting to an S3 bucket encrypted with a customer managed KMS key

    • Improved the availability of Aurora replicas in the global DB secondary clusters

    • Added support for query plan capture on Aurora replicas

    • Allowed query plans under a given cost threshold to not be captured

    General enhancements

    • Fixed an issue in the aws_s3 extension where the number of rows exported is incorrectly reported when the total number exceeds 2 billion

    • Provided options to configure timeouts in the aws_s3 extension. By setting the following parameters (GUCs), customers will now be able to change the timeout thresholds for imports from S3:

      • aws_s3.curlopt_low_speed_limit

      • aws_s3.curlopt_low_speed_time

    • Improved the performance of replay of commit transaction operations on Aurora replicas

    • Fixed an issue where, in rare cases, an import from the aws_s3 extension fails to complete

    • Updated the GEOS library for PostGIS to version 3.12.0

    • Added the WAIT_EVENT_Aurora_CLUSTER_CACHE_MANAGER_SENDER wait event to denote wait times in the cluster cache manager sender

    • Added the WAIT_EVENT_Aurora_SERVERLESS_MONITORING_MAIN wait event to denote wait times in Aurora Serverless resource monitoring

    • Fixed an issue where the database may crash during the start of a logical replication slot

    • Increased the limit for pg_cron cron.max_running_jobs parameter from 100 to 1000

    Additional improvements and enhancements

    • Updated the following extensions:

      • orafce to version 4.3.0

      • pg_logical to version 2.4.3

      • pgvector to version 0.5.0

      • plv8 to version 3.1.6

      • PostGIS to version 3.3.3

      • RDKit to version 4.3

    For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 12.

    PostgreSQL 12.15

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.15. For more information about the improvements in PostgreSQL 12.15, see PostgreSQL release 12.15.

    Aurora PostgreSQL 12.15.6, August 7, 2024

    Critical stability enhancements

    • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

    • Fixed a V8 Engine CVE-2018-6065 for PLV8 2.x.

    General enhancements

    • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

    Aurora PostgreSQL 12.15.5, March 13, 2024

    General enhancements

    • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

    High priority enhancements

    • Fixed an issue that would cause a logical replication slot to transiently error out in the presence of aborted subtransactions and DDL.

    • Backported fixes for the following PostgreSQL community security issue:

    Critical stability enhancements

    • Fixed an issue related to apg_plan_mgmt.

    • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

    • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

    Aurora PostgreSQL 12.15.4, December 14, 2023

    Critical stability enhancements
    General stability enhancements

    • Fixed an issue with logical replication actions being performed by someone other than the table owner

    Aurora PostgreSQL 12.15.3, November 14, 2023

    Critical stability enhancements

    • Backported a fix for the following security issue:

    • Fixed an issue related to pg_cron background worker processes

    General enhancements

    • Fixed an issue that could result in read replica lag due to stale metadata

    • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

    Aurora PostgreSQL 12.15.2, October 4, 2023

    High priority stability enhancements

    • Backported a fix for the following PostgreSQL community security issue:

    High priority enhancements

    • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads.

    • Fixed an issue which can cause vacuum operations to become blocked after the restart of an Aurora replica.

    • Fixed an issue that would cause a crash when executing the COPY FROM command.

    • Fixed an issue that would cause high CPU usage and prevent new connections.

    • Fixed an issue where UPDATE and DELETE from a table with foreign key could fail unexpectedly with "ERROR: 40001: could not serialize access due to concurrent update when using Serializable snapshot".

    General enhancements

    • Introduced diagnostics for the transient metadata used for I/O.

    • Updated the plv8, pll, and plcoffee extensions to version 2.3.15.

    • Fixed an issue that prevented the enablement of improved memory management in certain scenarios in Aurora PostgreSQL 15.3.

    Aurora PostgreSQL 12.15.0, July 13, 2023

    Following the announcement of updates to the PostgreSQL database by the open source community, we have updated Amazon Aurora PostgreSQL-Compatible Edition to support PostgreSQL versions 15.3, 14.8, 13.11, 12.15, and 11.20. These releases contains product improvements and bug fixes made by the PostgreSQL community, along with Aurora-specific improvements. The releases also contain new features and improvements for Babelfish for Aurora PostgreSQL version 3.2, and improved support for AWS Database Migration Service. Refer to the Amazon Aurora versions to help you to decide how often to upgrade and how to plan your upgrade process. As a reminder, if you are running any version of Amazon Aurora PostgreSQL 11, you must upgrade to a newer major version by February 29, 2024.

    New features

    • This release contains memory management improvements which increase database stability and availability by proactively preventing issues caused by insufficient memory. For more information, see Improved memory management in Aurora PostgreSQL.

    • Added support for the pgvector extension version 0.4.1.

    High priority enhancements

    • Fixed an issue with the subtransaction metadata handling when performing a survivable reader reconnect.

    • Fixed an issue during ZDP which is related to the extension environment variables.

    • Addressed a transient error during logical replication that caused a process to incorrectly calculate that it had encountered an unexpected page.

    • Fixed an issue which causes a period of unavailability due to a partially created replication origin state file.

    General enhancements

    • Added a new function, aurora_stat_memctx_usage(), to show backend memory use breakdown at a Postgres memory context level.

    • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters (GUCs), customers will now be able to change the connect and request timeouts for AWS Lambda integration:

      • aws_lambda.connect_timeout_ms.

      • aws_lambda.request_timeout_ms.

    • Fixed an issue with the calculation of the AuroraReplicaLag metric.

    • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots.

    • Further reduced the database downtime during ZDP.

    • Fixed a bug which can cause unavailability during ZDP.

    • Fixed an issue which caused pg_ls_waldir() to return "ERROR: could not stat file".

    • Added support for TLS 1.3 with ciphers TLS_AES_128_GCM_SHA256 and TLS_AES_256_GCM_SHA384.

    • Addressed an issue that blocked a major version upgrade on the Aurora replica of an RDS for PostgreSQL DB instance.

    • Fixed an issue in the pg_vector extension where, in rare cases, infinite or NAN values caused a crash during the index creation

    • Upgraded GEOS to version 3.11.2.

    • Upgraded pg_cron to version 1.5.

    • Upgraded pg_partman to version 4.7.3.

    • Upgraded tds_fdw to 2.0.3.

    PostgreSQL 12.14

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.14. For more information about the improvements in PostgreSQL 12.14, see PostgreSQL release 12.14.

    Aurora PostgreSQL 12.14.8, August 7, 2024

    Critical stability enhancements

    • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

    • Fixed a V8 Engine CVE-2018-6065 for PLV8 2.x.

    General enhancements

    • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

    Aurora PostgreSQL 12.14.7, March 13, 2024

    General enhancements

    • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

    High priority enhancements

    • Fixed an issue that would cause a logical replication slot to transiently error out in the presence of aborted subtransactions and DDL.

    • Backported fixes for the following PostgreSQL community security issue:

    Critical stability enhancements

    • Fixed an issue related to apg_plan_mgmt.

    • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

    • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

    Aurora PostgreSQL 12.14.6, December 15, 2023

    Critical stability enhancements
    General stability enhancements

    • Fixed an issue with logical replication actions being performed by someone other than the table owner

    Aurora PostgreSQL 12.14.5, November 14, 2023

    Critical stability enhancements

    • Backported a fix for the following security issue:

    • Fixed an issue related to pg_cron background worker processes

    General enhancements

    • Fixed an issue that could result in read replica lag due to stale metadata

    • Fixed an issue related to buffer pin locking that in rare cases can result in a crash

    Aurora PostgreSQL 12.14.4, October 5, 2023

    High priority stability enhancements

    • Backported a fix for the following PostgreSQL community security issue:

    High priority enhancements

    • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads.

    • Fixed an issue which can cause vacuum operations to become blocked after the restart of an Aurora replica.

    • Fixed an issue that would cause high CPU usage and prevent new connections.

    General enhancements

    • Introduced diagnostics for the transient metadata used for I/O.

    • Updated the plv8, pll, and plcoffee extensions to version 2.3.15.

    Aurora PostgreSQL 12.14.3, July 24, 2023

    General enhancements

    • Fixed an issue with the calculation of the AuroraReplicaLag metric

    • Fixed a bug which can cause unavailability during ZDP

    • Fixed an issue that prevented reclaiming storage on transaction commits

    • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase

    • Added Aurora Serverless v2 scaling enhancements

    • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots.

    • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters (GUCs), customers will now be able to change the connect and request timeouts for AWS Lambda integration:

      • aws_lambda.connect_timeout_ms.

      • aws_lambda.request_timeout_ms.

    • Fixed multiple issues which can cause Aurora replicas with the improved read availability feature to restart when reconnecting with the writer instance.

    • Fixed an issue preventing a survivable reader reconnect

    Aurora PostgreSQL 12.14.2, May 10, 2023

    General enhancements

    • Fixed an error when loading the test_decoding plugin in pg_create_logical_replication_slot.

    • Updated the Oracle client used by the oracle_fdw extension to version 21.9.0.0.0.

    Aurora PostgreSQL 12.14.1, April 5, 2023

    New features

    • Introduced a new QPM plan hash calculation for multi-schema support. If users want to use QPM in multi-schema environments, they can set the apg_plan_mgmt.plan_hash version to 2 and call apg_plan_mgmt.validate_plans('update_plan_hash').

    General enhancements

    • Upgraded PROJ support to version 9.1.0

    • Upgraded the GDAL library in PostGIS to version 3.5.3

    • Added support for the TCN and SEG extensions

    • Fixed an issue which may increase the amount of recovery work the database does to startup with logical replication enabled

    • Improved performance of deletes from b-tree and hash indexes on Aurora replicas

    • Fixed issues that caused incorrect I/O timing metrics in EXPLAIN

    • Fixed an issue that caused incorrect buffer hit counts in EXPLAIN

    • Improved the engine startup time, particularly on large instances with many objects

    • The Aurora function aurora_stat_logical_wal_cache() is now visible to all users

    • Fixed an issue in QPM that could cause unavailability when enforcing plans from prepared statements

    Additional improvements and enhancements

    • Updated the following extensions:

      • hll to version 2.17

      • Oracle_fdw to version 2.5.0

      • orafce to version 4.0.0

      • pg_cron to version 1.4.2

      • pg_hint_plan to version 1.3.8

      • pg_logical to version 2.4.2

      • pg_trgm to version 1.4

      • pgrouting to version 3.4.1

      • PostGIS to version 3.3.2

      • SEG to version 1.0

      • TCN to version 1.0

      • wal2json to version 2.5

    PostgreSQL 12.13

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.13. For more information about the improvements in PostgreSQL 12.13, see PostgreSQL release 12.13.

    Aurora PostgreSQL 12.13.9, August 7, 2024

    Critical stability enhancements

    • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

    • Fixed a V8 Engine CVE-2018-6065 for PLV8 2.x.

    General enhancements

    • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

    Aurora PostgreSQL 12.13.8, March 13, 2024

    General enhancements

    • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

    High priority enhancements

    • Backported fixes for the following PostgreSQL community security issue:

    Critical stability enhancements

    • Fixed an issue related to apg_plan_mgmt.

    • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

    • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

    Aurora PostgreSQL 12.13.7, December 15, 2023

    Critical stability enhancements
    General stability enhancements

    • Fixed an issue with logical replication actions being performed by someone other than the table owner

    Aurora PostgreSQL 12.13.6, November 17, 2023

    Critical stability enhancements

    • Backported a fix for the following security issue:

    • Fixed an issue related to pg_cron background worker processes

    Aurora PostgreSQL 12.13.5, October 04, 2023

    High priority stability enhancements

    • Fixed an issue which can cause a database instance to restart while executing IO intensive read workloads.

    • Fixed an issue that would cause high CPU usage and prevent new connections.

    General enhancements

    • Introduced diagnostics for the transient metadata used for I/O.

    Aurora PostgreSQL 12.13.4, September 13, 2023

    General enhancements

    • Added Aurora Serverless v2 scaling enhancements

    • Fixed an issue in pg_cron which can prevent scaling in Aurora Serverless v2

    • Fixed an issue with the calculation of the AuroraReplicaLag metric

    • Fixed a bug which can cause unavailability during ZDP

    • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase

    • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots.

    • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

      • aws_lambda.connect_timeout_ms.

      • aws_lambda.request_timeout_ms.

    • Updated the plv8, plls, and plcoffee extensions to version 2.3.15.

    Aurora PostgreSQL 12.13.2, March 3, 2023

    General stability enhancements

    • Fixed an issue in PostGIS where the GDAL data wasn't loading.

    • Fixed an issue that increased the amount of recovery work during startup if logical replication is enabled.

    • Fixed an issue for the better error handling of procedures with large numbers of parameters.

    • Fixed an issue with the aws_s3 extension where loading a large number of records can time out.

    Aurora PostgreSQL 12.13.0, January 20, 2023

    High priority stability enhancements

    • Fixed an issue where an upgrade fails because the oldest MultiXactId is updated incorrectly.

    • Fixed an issue where the commit latency metrics weren't updated.

    • Fixed an issue that could lead to a brief period of unavailability.

    General stability enhancements

    • Fixed an issue that caused DB instance migration failures.

    • Fixed an issue where the DB fails to start because of an inconsistency in the metadata.

    • Improved the error handling and diagnosability.

    • Upgraded the RDKit extension to version 4.2.

    • Upgraded the GDAL library to version 3.4.3.

    • The apg_plan_mgmt.copy_outline function now copies environment_variables.

    • Fixed an issue that can cause certain processes to linger in an inconsistent state during a clean shutdown.

    • Fixed an issue with the pg_repack extension.

    • Improved the collation library (glibc) handling with a new independent default collation library.

    PostgreSQL 12.12

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.12. For more information about the improvements in PostgreSQL 12.12, see PostgreSQL release 12.12.

    Aurora PostgreSQL 12.12.7, August 7, 2024

    Critical stability enhancements

    • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

    • Fixed a V8 Engine CVE-2018-6065 for PLV8 2.x.

    General enhancements

    • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

    Aurora PostgreSQL 12.12.6, March 13, 2024

    General enhancements

    • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

    High priority enhancements

    • Backported fixes for the following PostgreSQL community security issue:

    Critical stability enhancements

    • Fixed an issue related to apg_plan_mgmt.

    • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

    • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

    Aurora PostgreSQL 12.12.5, December 18, 2023

    Critical stability enhancements
    General stability enhancements

    • Fixed an issue with logical replication actions being performed by someone other than the table owner

    Aurora PostgreSQL 12.12.4, November 17, 2023

    Critical stability enhancements

    • Backported a fix for the following security issue:

    • Fixed an issue related to pg_cron background worker processes

    Aurora PostgreSQL 12.12.3, October 17, 2023

    High priority stability enhancements
    High priority enhancements

    • Fixed an issue which blocked vacuum operations after the restart of an Aurora replica.

    • Fixed an issue that would cause high CPU usage and prevent new connections.

    General stability enhancements

    • Fixed an issue which causes the stats collector process to repeatedly restart.

    • Improved the scale times for Aurora Serverless v2.

    • Fix a bug which can cause unavailability during ZDP.

    • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase.

    • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an S3 bucket with a name containing dots.

    • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

      • aws_lambda.connect_timeout_ms.

      • aws_lambda.request_timeout_ms.

    • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads.

    • Updated the plv8, pll, and plcoffee extensions to version 2.3.15.

    Aurora PostgreSQL 12.12.2, March 2, 2023

    General stability enhancements

    • Fixed an issue that increased the amount of recovery work during startup if logical replication is enabled.

    • Fixed an issue for better error handling of procedures with large numbers of parameters.

    • Fixed an issue with the aws_s3 extension where loading a large number of records can time out.

    • Fixed an issue with the pg_cron parallel running of tasks.

    Aurora PostgreSQL 12.12.1, December 13, 2022

    General stability enhancements

    • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

    • Fixed an issue where the engine experiences stability issues during database minor and patch release upgrades.

    • Fixed an issue that could cause data inconsistency during replication.

    Aurora PostgreSQL 12.12.0, November 09, 2022

    General stability enhancements

    • Added support for the rds_superuser role to execute CREATE OPERATOR CLASS, REATE OPERATOR FAMILY, and ALTER OPERATOR FAMILY, which are available in the higher versions.

    • Improved buffer cache scavenging when the buffer cache is in duress.

    • Fixed an issue in database activity streams that leads to high memory consumption.

    • Fixed an issue that caused DB instance restarts.

    • Fixed an issue where a DB instance restarts recursively while generating monitoring metrics during a crash.

    • Fixed an issue where a DB instance restarted during performance metric collection.

    • Fixed an issue where an attempt to connect to the database would fail with SSLV3_ALERT_CERTIFICATE_UNKNOWN.

    • Improved the diagnostic logging around setting invalid hint bits.

    • Fixed an issue where autovacuum would incorrectly skip tables.

    • Improved the logical replication prefetching.

    • Fixed a durability issue in the GIN indexes.

    • Fixed an issue to detect and cancel stuck major version upgrades.

    • Fixed an issue in hash join that could lead to increased memory consumption.

    • Improved the logical replication performance.

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    • Upgraded the GEOS version to 3.10.3.

    • Updated the PostGIS extension to version 3.2.3.

    • Fixed an issue with st_orientedenvelope that caused it to loop with a 1-D input to return 0.

    • Fixed an issue where the connection to SQL Server using tds_fdw fails.

    PostgreSQL 12.11

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.11. For more information about the improvements in PostgreSQL 12.11, see PostgreSQL release 12.11.

    Aurora PostgreSQL 12.11.10, August 7, 2024

    Critical stability enhancements

    • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

    • Fixed a V8 Engine CVE-2018-6065 for PLV8 2.x.

    General enhancements

    • Fixed issue where minor version upgrades with ZDP would fail resulting in longer upgrade times.

    Aurora PostgreSQL 12.11.9, March 13, 2024

    General enhancements

    • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

    High priority enhancements

    • Backported fixes for the following PostgreSQL community security issue:

    Critical stability enhancements

    • Fixed an issue related to apg_plan_mgmt.

    • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

    • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

    Aurora PostgreSQL 12.11.8, December 22, 2023

    Critical stability enhancements
    General stability enhancements

    • Fixed an issue with logical replication actions being performed by someone other than the table owner

    Aurora PostgreSQL 12.11.7, November 17, 2023

    Critical stability enhancements

    • Backported a fix for the following security issue:

    • Fixed an issue related to pg_cron background worker processes

    Aurora PostgreSQL 12.11.6, October 19, 2023

    High priority stability enhancements
    High priority enhancements

    • Fixed an issue which blocked vacuum operations after the restart of an Aurora replica.

    • Fixed an issue that would cause high CPU usage and prevent new connections.

    General stability enhancements

    • Fixed an issue which causes the stats collector process to repeatedly restart.

    • Improved the scale times for Aurora Serverless v2.

    • Fix a bug which can cause unavailability during ZDP.

    • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase.

    • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an S3 bucket with a name containing dots.

    • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

      • aws_lambda.connect_timeout_ms.

      • aws_lambda.request_timeout_ms.

    • Updated the plv8, pll, and plcoffee extensions to version 2.3.15.

    Aurora PostgreSQL 12.11.5, December 14, 2022

    General stability enhancements

    • Fixed an issue where the engine experiences stability issues during database minor and patch release upgrades.

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    • Fixed an issue that could cause data inconsistency during replication.

    Aurora PostgreSQL 12.11.4, November 17, 2022

    High priority stability enhancements

    • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

    Aurora PostgreSQL 12.11.3, October 13, 2022

    High priority stability enhancements

    • Fixed a PLV8 issue where the base parameter doesn't get loaded properly into the memory.

    General stability enhancements

    • Fixed a bug where Aurora PostgreSQL can't file the relfilenode.

    • Fixed a stuck scaling issue when the current scaling event times out.

    • Upgraded the PostGIS extension to version 3.1.7.

    • Fixed an issue where extended query messages might be lost during zero-downtime patching (ZDP) causing the extended query to hang after the ZDP completion.

    Aurora PostgreSQL 12.11.1, July 6, 2022

    Critical stability enhancements

    • Fixed an issue that could cause periods of unavailability during a storage node restart.

    High priority stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

    • Fixed an issue when the connection to SQL Server fails using the TDS_FDW extension to query a foreign table.

    • Fixed an issue that caused connections using the provided root certificate to fail.

    • Improved the diagnostic and supportability information in case of inconsistent B-tree index entries.

    Aurora PostgreSQL 12.11.0, June 9, 2022

    New features
    Critical updates

    • Fixed a replay crash due to an LSN mismatch.

    • Fixed the aws_s3 extension to prevent invalid region injection.

    High stability updates

    • Fixed multiple issues related to out-of-memory conditions which could result in brief periods of unavailability.

    General stability updates

    • Fixed a lock contention crash during an Aurora Serverless v1 scaling event.

    • Fixed an issue where logical replication becomes stuck after a restart.

    • Fixed multiple issues that could lead to brief periods of unavailability.

    • Fixed a crash in pg_cron due to a task still running but being unscheduled.

    • Fixed, during redo, an invalid page hit on the Generic Redo for GENERIC_XLOG_FULL_PAGE_DATA. This happens due to a timing hole between generating the log record and then writing the metadata for the record on the RW node and the RO node replays between those operations.

    • Improved the query performance by supporting parallel workers.

    • Upgraded the plugin wal2json version to 2.4.

    • Upgraded the pglogical extension to version 2.4.1.

    PostgreSQL 12.10 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.10. For more information about the improvements in PostgreSQL 12.10, see PostgreSQL release 12.10.

    Aurora PostgreSQL 12.10.6, December 16, 2022

    General enhancements

    • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    • Updated the PostGIS extension to version 3.1.7.

    Aurora PostgreSQL 12.10.4, July 18, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    Critical enhancements

    • Fixed an issue during a storage node restart that could result in periods of unavailability.

    High stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions that could result in brief periods of unavailability.

    • Fixed an issue related to the existence of duplicate relation files that could result in periods of unavailability.

    • Fixed a defect where the validation of cached plans may lead to a database restart when the plan was previously invalidated.

    Aurora PostgreSQL 12.10.1, April 27, 2022

    High priority stability enhancements

    • Fixed an issue that could cause incorrect WriteIOPS reporting in the AWS console.

    • Fixed an issue that could cause unavailability after removal of a read node from a cluster.

    General enhancements

    • Fixed an issue that could cause an engine restart during periods of low free memory.

    Aurora PostgreSQL 12.10.0, March 29, 2022

    High priority stability enhancements

    • Fixed multiple issues that may result in unavailability of a read node.

    • Fixed an issue that may result in a read node being unable to replay WAL requiring the replication slot to be dropped and resynchronized.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    General enhancements

    • Fixed a small memory leak on read nodes when commit_ts is set.

    • Fixed an issue that caused Performance Insights to show "Unknown wait event".

    • Fixed an issue that could cause an import from Amazon S3 to fail when using the aws_s3 extension.

    • Fixed multiple issues that could result in periods of unavailability when using apg_plan_mgmt.

    • Fixed multiple issues that could result in periods of unavailability when QPM is enabled.

    PostgreSQL 12.9

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.9. For more information about the improvements in PostgreSQL 12.9, see PostgreSQL release 12.9.

    Aurora PostgreSQL 12.9.12, August 7, 2024

    Critical stability enhancements

    • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

    • Fixed a V8 Engine CVE-2018-6065 for PLV8 2.x.

    Aurora PostgreSQL 12.9.11, March 13, 2024

    General stability enhancements

    • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

    • Upgraded PLV8 extension to version 2.3.15.

    High priority stability enhancements

    • Backported fixes for the following PostgreSQL community security issues:

    Critical stability enhancements

    • Fixed an issue related to apg_plan_mgmt.

    • Fixed an issue where active transactions during slot creation may be partially replicated by the slot.

    • Fixed a deadlock issue in Aurora storage which can result in writer failover.

    Aurora PostgreSQL 12.9.10, December 27, 2023

    Critical stability enhancements
    General stability enhancements

    • Fixed an issue with logical replication actions being performed by someone other than the table owner

    Aurora PostgreSQL 12.9.9, November 17, 2023

    Critical stability enhancements

    • Backported a fix for the following security issue:

    • Fixed an issue related to pg_cron background worker processes

    Aurora PostgreSQL 12.9.8, October 19, 2023

    High priority stability enhancements

    Aurora PostgreSQL 12.9.7, August 24, 2023

    General enhancements

    • Fixed an issue which causes the stats collector process to repeatedly restart.

    • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase.

    Aurora PostgreSQL 12.9.6, December 16, 2022

    General enhancements

    • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    • Updated the PostGIS extension to version 3.1.7.

    Aurora PostgreSQL 12.9.4, July 20, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    Critical enhancements

    • Fixed an issue during a storage node restart that could result in periods of unavailability.

    High stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions that could result in brief periods of unavailability.

    • Fixed an issue related to the existence of duplicate relation files that could result in periods of unavailability.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    • Fixed an issue that caused Performance Insights to show "Unknown wait event".

    Aurora PostgreSQL 12.9.3, April 13, 2022

    Security enhancements

    • Additional modifications to the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    General enhancements

    • Fixed a bug that could cause an engine restart during periods of low free memory.

    Aurora PostgreSQL 12.9.1

    Security enhancements

    • Updated the PostGIS extension from version 3.1.4 to 3.1.5. This update contains a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the pg_bigm extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Aurora PostgreSQL 12.9.0

    Critical stability enhancements

    • Fixed a bug where logical replication may hang resulting in the replay falling behind on the read node. The instance may eventually restart.

    Additional improvements and enhancements

    • Fixed a buffer cache bug that could cause brief periods of unavailability.

    • Fixed a bug in the apg_plan_mgmt extension where an index based plan was not being enforced.

    • Fixed a bug in the pg_logical extension that could cause brief periods of unavailability due to improper handling of NULL arguments.

    • Fixed an issue where orphaned files caused major version upgrades to fail.

    • Fixed incorrect Aurora Storage Daemon log write metrics.

    • Fixed multiple bugs that could result in WAL replay falling behind and eventually causing the reader instances to restart.

    • Improved the Aurora buffer cache page validation on reads.

    • Improved the Aurora storage metadata validation.

    • Updated the pg_cron extension to v1.4.

    • Updated the pg_hint_pan extension to v1.3.7.

    PostgreSQL 12.8 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.8. For more information about the improvements in PostgreSQL 12.8, see PostgreSQL release 12.8.

    Aurora PostgreSQL 12.8.6, December 19, 2022

    General enhancements

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    Aurora PostgreSQL 12.8.4, July 6, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    General enhancements

    • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    • Fixed an issue that could cause Performance Insights to display "Unknown wait event".

    • Fixed an issue that could result in periods of unavailability due to the existence of duplicate relation files.

    Aurora PostgreSQL 12.8.2, April 12, 2022

    Security enhancements

    • Additional modifications to the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    General enhancements

    • Fixed a buffer cache bug that could cause brief periods of unavailability.

    Aurora PostgreSQL 12.8.1

    Security enhancements

    • Updated the PostGIS extension from version 3.1.4 to 3.1.5. This update contains a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the pg_bigm extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Aurora PostgreSQL 12.8.0

    Critical stability enhancements

    • Fixed an issue where, in rare circumstances, a data cache of a read node may be inconsistent following a restart of that node.

    High priority stability enhancements

    • Fixed an issue where queries may become unresponsive due to I/O resource exhaustion triggered by prefetch.

    • Fixed an issue where Aurora may flag an issue following a major version update with the message: "PANIC: could not access status of next transaction id xxxxxxxx".

    Additional improvements and enhancements

    • Fixed an issue where read nodes restart due to a replication origin cache lookup failure.

    • Fixed an issue where read queries may time out on read nodes during the replay of lazy truncation triggered by vacuum on the write node.

    • Fixed an issue that causes Performance Insights to incorrectly set the backend type of a database connection.

    • Fixed an issue where the aurora_postgres_replica_status() function returned stale or lagging CPU stats.

    • Fixed an issue where the role rds_superuser did not have permission to execute the pg_stat_statements_reset() function.

    • Fixed an issue with the apg_plan_mgmt extension where the planning and execution times were reported as 0.

    • Removed support for the DES, 3DES, and RC4 cipher suites.

    • Updated PostGIS extension to version 3.1.4.

    PostgreSQL 12.7, Aurora PostgreSQL 4.2 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.7. For more information about the improvements in PostgreSQL 12.7, see PostgreSQL release 12.7.

    Aurora PostgreSQL 12.7.5, December 30, 2022

    General enhancements

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    Aurora PostgreSQL 12.7.4, July 14, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    High priority stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    • Fixed an issue that caused Performance Insights to show "Unknown wait event".

    Aurora PostgreSQL 4.2.3, April 7, 2022

    Security enhancements

    • Additional modifications to the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Aurora PostgreSQL 4.2.2

    Security enhancements

    • Modified the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the pg_bigm extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched the PostgreSQL community fix for CVE-2021-3677: “Memory disclosure in certain queries”. For more information, see CVE-2021-3677

    • Backpatched postgis to PostGIS 3.0.3. This is a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Aurora PostgreSQL 4.2.1

    Critical stability enhancements

    • Fixed an issue where, in rare circumstances, a data cache of a read node may be inconsistent following a restart of that node.

    High priority stability enhancements

    • Fixed an issue where queries may become unresponsive due to I/O resource exhaustion triggered by prefetch.

    • Fixed an issue where Aurora may flag an issue following a major version update with the message: "PANIC: could not access status of next transaction id xxxxxxxx".

    Additional improvements and enhancements

    • Fixed an issue where read nodes restart due to a replication origin cache lookup failure.

    • Fixed an issue with the apg_plan_mgmt extension where planning and execution time were reported as 0.

    • Fixed an issue that causes Performance Insights to incorrectly set the backend type of a database connection.

    • Fixed an issue with the apg_plan_mgmt extension where plan outline on a partitioned table did not enforce an index-based plan.

    • Fixed an issue where orphaned files caused failed translations in read codepaths during or after major version upgrade.

    • Fixed multiple issues in the Aurora storage daemon that could lead to brief periods of unavailability when specific network configurations are used.

    • Fixed an out-of-memory crash issue with Aurora storage daemon that leads to writer node restart. This also reduces the overall system memory consumption.

    Aurora PostgreSQL 4.2.0

    New features

    • Added support for the oracle_fdw extension version 2.3.0.

    High priority stability enhancements

    • Fixed an issue where creating a database from an existing template database with tablespace resulted in an error with the message ERROR: could not open file pg_tblspc/...: No such file or directory.

    • Fixed an issue where, in rare cases, an Aurora replica may be unable to start when a large number of PostgreSQL subtransactions (i.e. SQL savepoints) have been used.

    • Fixed an issue where, in rare circumstances, read results may be inconsistent for repeated read requests on replica nodes.

    Additional improvements and enhancements

    • Upgraded OpenSSL to 1.1.1k.

    • Reduced CPU usage and memory consumption of the WAL apply process on Aurora replicas for some workloads.

    • Improved safety checks in the write path to detect incorrect writes to metadata.

    • Improved security by removing 3DES and other older ciphers for SSL/TLS connections.

    • Fixed an issue where a duplicate file entry can prevent the Aurora PostgreSQL engine from starting up.

    • Fixed an issue that could cause temporary unavailability under heavy workloads.

    • Added back ability to use a leading forward slash in the Amazon S3 path during S3 import.

    • Added Graviton support for oracle_fdw extension version 2.3.0.

    • Changed the following extensions:

      • Updated the orafce extension to version 3.16.

      • Updated the pg_partman extension to version 4.5.1.

      • Updated the pg_cron extension to version 1.3.1.

      • Updated the postgis extension to version 3.0.3.

    PostgreSQL 12.6, Aurora PostgreSQL 4.1 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.6. For more information about the improvements in PostgreSQL 12.6, see PostgreSQL release 12.6.

    Aurora PostgreSQL 4.1.2, April 7, 2022

    Security enhancements

    • Additional modifications to the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Aurora PostgreSQL 4.1.1

    Security enhancements

    • Modified the pg_cron extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the pg_bigm extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched the PostgreSQL community fix for CVE-2021-3677: “Memory disclosure in certain queries”. For more information, see CVE-2021-3677

    • Backpatched pg_partman to 4.4.0. This is a pg_partman fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched postgis to PostGIS 3.0.2. This is a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched an input validation error in the log_fdw extension function parameters.

    Aurora PostgreSQL 4.1.0

    New features
    High priority stability enhancements

    • Fixed a bug in the pglogical extension that could lead to data inconsistency for inbound replication.

    • Fixed a bug where in rare cases a reader had inconsistent results when it restarted while a transaction with more than 64 subtransactions was being processed.

    • Backported fixes for the following PostgreSQL community security issues:

    Additional improvements and enhancements

    • Fixed a bug where the database could not be started when there were many relations in memory-constrained environments.

    • Fixed a bug in the apg_plan_mgmt extension that could cause brief periods of unavailability due to an internal buffer overflow.

    • Fixed a bug on reader nodes that could cause brief periods of unavailability during WAL replay.

    • Fixed a bug in the rds_activity_stream extension that caused an error during startup when attempting to log audit events.

    • Fixed bugs in the aurora_replica_status function where rows were sometimes partially populated and some values such as Replay Latency, and CPU usage were always 0.

    • Fixed a bug where the database engine would attempt to create shared memory segments larger than the instance total memory and fail repeatedly. For example, attempts to create 128 GiB shared buffers on a db.r5.large instance would fail. With this change, requests for total shared memory allocations larger than the instance memory allow setting the instance to incompatible parameters.

    • Added logic to clean up unnecessary pg_wal temporary files on a database startup.

    • Fixed a bug that could lead to outbound replication synchronization errors after a major version upgrade.

    • Fixed a bug that reported ERROR: rds_activity_stream stack item 2 not found on top - cannot pop when attempting to create the rds_activity_stream extension.

    • Fixed a bug that could cause the error failed to build any 3-way joins in a correlated IN subquery under an EXISTS subquery.

    • Backported the following performance improvement from the PostgreSQL community: pg_stat_statements: add missing check for pgss_enabled().

    • Fixed a bug that could cause upgrades to Aurora PostgreSQL 12.x to fail due to the inability to open the pg_control file.

    • Fixed a bug that could cause brief periods of unavailability due to running out of memory when creating the postgis extension with pgAudit enabled.

    • Backported the following bug fix from the PostgreSQL community: Fix use-after-free bug with AfterTriggersTableData.storeslot.

    • Fixed a bug when using outbound logical replication to synchronize changes to another database that could fail with an error message like ERROR: could not map filenode "base/16395/228486645" to relation OID.

    • Fixed a bug that could cause a brief period of unavailability when canceling a transaction.

    • Fixed a bug that caused no ICU collations to be shown in the pg_collation catalog table after creating a new Aurora PostgreSQL 12.x instance. This issue does not affect upgrading from an older version.

    • Fixed a bug where the rds_ad role wasn't created after upgrading from a version of Aurora PostgreSQL that doesn't support Microsoft Active Directory authentication.

    • Added btree page checks to detect tuple metadata inconsistency.

    • Fixed a bug in asynchronous buffer reads that could cause brief periods of unavailability on reader nodes during WAL replay.

    • Fixed a bug where reading a TOAST value from disk could cause a brief period of unavailability.

    • Fixed a bug that caused brief periods of unavailability when attempting to fetch a tuple from and index scan.

    PostgreSQL 12.4, Aurora PostgreSQL 4.0 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 12.4. For more information about the improvements in PostgreSQL 12.4, see PostgreSQL release 12.4.

    Aurora PostgreSQL 4.0.5

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched the PostgreSQL community fix for CVE-2021-3677: “Memory disclosure in certain queries”. For more information, see CVE-2021-3677

    • Backpatched postgis to PostGIS 3.0.2. This is a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched an input validation error in the log_fdw extension function parameters.

    Aurora PostgreSQL 4.0.2

    High priority stability enhancements

    • Fixed a bug where a reader node might render an extra or missing row if the reader restarted while the writer node is processing a long transaction with more than 64 subtransactions.

    • Fixed a bug that can cause vacuum to block on GiST indexes.

    • Fixed a bug where after upgrade to PostgreSQL 12, vacuum can fail on the system table pg_catalog.pg_shdescription with the following error. ERROR: found xmin 484 from before relfrozenxid

    Additional improvements and enhancements

    • Fixed a bug that could lead to intermittent unavailability due to a race condition when handling responses from storage nodes.

    • Fixed a bug that could lead to intermittent unavailability due to the rotation of network encryption keys.

    • Fixed a bug that could lead to intermittent unavailability due to heat management of the underlying storage segments.

    • Fixed a bug where a large Amazon S3 import with thousands of clients can cause one or more of the import clients to stop responding.

    • Removed a restriction that prevented setting configuration variable strings that contained brazil.

    • Fixed a bug that could lead to intermittent unavailability if a reader node runs a query that access many tables while the writer node is acquiring exclusive locks on all of the same tables.

    Aurora PostgreSQL 4.0.1

    New features
    Critical stability enhancements

    • Fixed a bug that caused a read replica to unsuccessfully restart repeatedly in rare cases.

    • Fixed a bug where a cluster became unavailable when attempting to create more than 16 read replicas or Aurora global database secondary AWS Regions. The cluster became available again when the new read replica or secondary AWS Region was removed.

    Additional improvements and enhancements

    • Fixed a bug that when under heavy load, snapshot import, COPY import, or Amazon S3 import stopped responding in rare cases.

    • Fixed a bug where a read replica might not join the cluster when the writer was very busy with a write-intensive workload.

    • Fixed a bug where a cluster could be unavailable briefly when a high-volume Amazon S3 import was running.

    • Fixed a bug that caused a cluster to take several minutes to restart if a logical replication stream was terminated while handling many complex transactions.

    • Fixed the Just-in-Time (JIT) compilation, which was incorrectly enabled by default in Aurora PostgreSQL 4.0.0.

    • Disallowed the use of both AWS Identity and Access Management (IAM) and Kerberos authentication for the same user.

    Aurora PostgreSQL 4.0.0

    New features
    Additional improvements and enhancements

    • Contains several improvements that were announced for PostgreSQL releases 12.0, 12.1, 12.2, 12.3, and 12.4.

    • Contains all fixes, features, and improvements present in PostgreSQL 11.9, Aurora PostgreSQL 3.4 .

    • Backported fixes for the following PostgreSQL community security issues:

    • Updated the following extensions:

      • address_standardizer to version 3.0.2

      • address_standardizer_data_us to version 3.0.2

      • amcheck to version 1.2

      • citext to version 1.6

      • hll to version 2.14

      • hstore to version 1.6

      • ip4r to version 2.4

      • pg_repack to version 1.4.5

      • pg_stat_statements to version 1.7

      • pgaudit to version 1.4

      • pglogical to version 2.3.2

      • pgrouting to version 3.0.3

      • plv8 to version 2.3.14

      • postGIS to version 3.0.2

      • postgis_tiger_geocoder to version 3.0.2

      • postgis_topology to version 3.0.2

    PostgreSQL 11 versions (includes some deprecated versions)

    PostgreSQL 11.21

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.21. For more information about the improvements in PostgreSQL 11.21, see PostgreSQL release 11.21.

    Aurora PostgreSQL 11.21.7, June 25, 2024

    General enhancements

    • Fixed multiple issues where minor version upgrades with ZDP would fail resulting in longer upgrade times.

    • Fixed an issue which prevented upgrading older PostGIS 2.4 installations to version 3.3.3.

    Critical stability enhancements

    • Fixed an issue where a change in memory requirements during a minor version upgrade can cause zero-downtime patching and engine startup to fail.

    • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

    Aurora PostgreSQL 11.21.6, March 13, 2024

    General enhancements

    • Fixed a performance degradation issue in PLV8 extension.

    Aurora PostgreSQL 11.21.5, February 22, 2024

    General enhancements

    • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

    High priority enhancements

    • Fixed an issue where pg_stat_statements can block minor version upgrade during ZDP.

    • Fixed an issue where a logical replication slot would no longer emit changes due to an overly strict data consistency check.

    • Backported fixes for the following PostgreSQL community security issue:

    Critical stability enhancements

    • Fixed an issue related to apg_plan_mgmt.

    • Fixed a deadlock issue in Aurora Storage which can result in writer failover.

    • Fixed an issue where active transactions during logical replication slot creation may be partially replicated by the slot.

    Aurora PostgreSQL 11.21.2, December 13, 2023

    Critical stability enhancements
    General stability enhancements

    • Fixed an issue with logical replication actions being performed by someone other than the table owner

    Aurora PostgreSQL 11.21.1, November 09, 2023

    Critical stability enhancements

    Aurora PostgreSQL 11.21.0, October 24, 2023

    New features

    • Added support in the aws_s3 extension for exporting to an S3 bucket encrypted with a customer managed KMS key

    General enhancements

    • Fixed an issue in the aws_s3 extension where the number of rows exported is incorrectly reported when the total number exceeds 2 billion

    • Provided options to configure timeouts in the aws_s3 extension. By setting the following parameters (GUCs), customers will now be able to change the timeout thresholds for imports from S3:

      • aws_s3.curlopt_low_speed_limit

      • aws_s3.curlopt_low_speed_time

    • Improved the performance of replay of commit transaction operations on Aurora replicas

    • Fixed an issue where, in rare cases, an import from the aws_s3 extension fails to complete

    • Updated the GEOS library for PostGIS to version 3.12.0

    • Added the WAIT_EVENT_Aurora_CLUSTER_CACHE_MANAGER_SENDER wait event to denote wait times in the cluster cache manager sender

    • Added the WAIT_EVENT_Aurora_SERVERLESS_MONITORING_MAIN wait event to denote wait times in Aurora Serverless resource monitoring

    • Fixed an issue where the database may crash during the start of a logical replication slot

    Additional improvements and enhancements

    • Updated the following extensions:

      • orafce to version 4.3.0

      • pg_logical to version 2.4.3

      • plv8 to version 3.1.6

      • PostGIS to version 3.3.3

      • RDKit to version 4.3

    For information about extensions and modules, see Extensions supported for Aurora PostgreSQL 11.

    PostgreSQL 11.20 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.20. For more information about the improvements in PostgreSQL 11.20, see PostgreSQL release 11.20.

    Aurora PostgreSQL 11.20.2, October 4, 2023

    High priority stability enhancements

    • Backported a fix for the following PostgreSQL community security issue:

    High priority enhancements

    • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads.

    • Fixed an issue which can cause vacuum operations to become blocked after the restart of an Aurora replica.

    • Fixed an issue that would cause a crash when executing the COPY FROM command.

    • Fixed an issue that would cause high CPU usage and prevent new connections.

    • Fixed an issue where UPDATE and DELETE from a table with foreign key could fail unexpectedly with "ERROR: 40001: could not serialize access due to concurrent update when using Serializable snapshot".

    General enhancements

    • Introduced diagnostics for the transient metadata used for I/O.

    • Updated the plv8, pll, and plcoffee extensions to version 2.3.15.

    • Fixed an issue that prevented the enablement of improved memory management in certain scenarios in Aurora PostgreSQL 15.3.

    Aurora PostgreSQL 11.20.0, July 13, 2023

    Following the announcement of updates to the PostgreSQL database by the open source community, we have updated Amazon Aurora PostgreSQL-Compatible Edition to support PostgreSQL versions 15.3, 14.8, 13.11, 12.15, and 11.20. These releases contains product improvements and bug fixes made by the PostgreSQL community, along with Aurora-specific improvements. The releases also contain new features and improvements for Babelfish for Aurora PostgreSQL version 3.2, and improved support for AWS Database Migration Service. Refer to the Amazon Aurora versions to help you to decide how often to upgrade and how to plan your upgrade process. As a reminder, if you are running any version of Amazon Aurora PostgreSQL 11, you must upgrade to a newer major version by February 29, 2024.

    New features

    • This release contains memory management improvements which increase database stability and availability by proactively preventing issues caused by insufficient memory. For more information, see Improved memory management in Aurora PostgreSQL.

    High priority enhancements

    • Fixed an issue during ZDP which is related to the extension environment variables.

    • Addressed a transient error during logical replication that caused a process to incorrectly calculate that it had encountered an unexpected page.

    • Fixed an issue which causes a period of unavailability due to a partially created replication origin state file.

    General enhancements

    • Added a new function, aurora_stat_memctx_usage(), to show backend memory use breakdown at a Postgres memory context level.

    • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters (GUCs), customers will now be able to change the connect and request timeouts for AWS Lambda integration:

      • aws_lambda.connect_timeout_ms.

      • aws_lambda.request_timeout_ms.

    • Fixed an issue with the calculation of the AuroraReplicaLag metric.

    • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots.

    • Further reduced the database downtime during ZDP.

    • Fixed a bug which can cause unavailability during ZDP.

    • Fixed an issue which caused pg_ls_waldir() to return "ERROR: could not stat file".

    • Added support for TLS 1.3 with ciphers TLS_AES_128_GCM_SHA256 and TLS_AES_256_GCM_SHA384.

    • Addressed an issue that blocked a major version upgrade on the Aurora replica of an RDS for PostgreSQL DB instance.

    • Upgraded GEOS to version 3.11.2.

    • Upgraded tds_fdw to 2.0.3.

    PostgreSQL 11.19 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.19. For more information about the improvements in PostgreSQL 11.19, see PostgreSQL release 11.19.

    Aurora PostgreSQL 11.19.4, October 5, 2023

    High priority stability enhancements

    • Backported a fix for the following PostgreSQL community security issue:

    High priority enhancements

    • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads.

    • Fixed an issue which can cause vacuum operations to become blocked after the restart of an Aurora replica.

    • Fixed an issue that would cause high CPU usage and prevent new connections.

    General enhancements

    • Introduced diagnostics for the transient metadata used for I/O.

    • Updated the plv8, pll, and plcoffee extensions to version 2.3.15.

    Aurora PostgreSQL 11.19.3, July 24, 2023

    General enhancements

    • Fixed an issue with the calculation of the AuroraReplicaLag metric

    • Fixed a bug which can cause unavailability during ZDP

    • Fixed an issue that prevented reclaiming storage on transaction commits

    • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase

    • Added Aurora Serverless v2 scaling enhancements

    • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots.

    • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters (GUCs), customers will now be able to change the connect and request timeouts for AWS Lambda integration:

      • aws_lambda.connect_timeout_ms.

      • aws_lambda.request_timeout_ms.

    • Fixed multiple issues which can cause Aurora replicas with the improved read availability feature to restart when reconnecting with the writer instance.

    • Fixed an issue preventing a survivable reader reconnect.

    Aurora PostgreSQL 11.19.2, May 10, 2023

    General enhancements

    • Fixed an error when loading the test_decoding plugin in pg_create_logical_replication_slot.

    Aurora PostgreSQL 11.19.1, April 5, 2023

    General enhancements

    • Upgraded PROJ support to version 9.1.0

    • Upgraded the GDAL library in PostGIS to version 3.5.3

    • Added support for the TCN and SEG extensions

    • Fixed an issue which may increase the amount of recovery work the database does to startup with logical replication enabled

    • Fixed issues that caused incorrect I/O timing metrics in EXPLAIN

    • Fixed an issue that caused incorrect buffer hit counts in EXPLAIN

    • Improved the engine startup time, particularly on large instances with many objects

    • The Aurora function aurora_stat_logical_wal_cache() is now visible to all users

    Additional improvements and enhancements

    • Updated the following extensions:

      • hll to version 2.17

      • orafce to version 4.0.0

      • pg_hint_plan to version 1.3.8

      • pg_logical to version 2.4.2

      • pg_trgm to version 1.4

      • pgrouting to version 3.4.1

      • PostGIS to version 3.3.2

      • SEG to version 1.0

      • TCN to version 1.0

      • wal2json to version 2.5

    PostgreSQL 11.18 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.18. For more information about the improvements in PostgreSQL 11.18, see PostgreSQL release 11.18.

    Aurora PostgreSQL 11.18.5, October 04, 2023

    High priority stability enhancements

    • Fixed an issue which can cause a database instance to restart while executing IO intensive read workloads.

    • Fixed an issue that would cause high CPU usage and prevent new connections.

    General enhancements

    • Introduced diagnostics for the transient metadata used for I/O.

    Aurora PostgreSQL 11.18.4, September 13, 2023

    General enhancements

    • Added Aurora Serverless v2 scaling enhancements

    • Fixed an issue with the calculation of the AuroraReplicaLag metric

    • Fixed a bug which can cause unavailability during ZDP

    • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase

    • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an Amazon S3 bucket with a name containing dots.

    • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

      • aws_lambda.connect_timeout_ms.

      • aws_lambda.request_timeout_ms.

    • Updated the plv8, plls, and plcoffee extensions to version 2.3.15.

    Aurora PostgreSQL 11.18.2, March 3, 2023

    General stability enhancements

    • Fixed an issue in PostGIS where the GDAL data wasn't loading.

    • Fixed an issue that increased the amount of recovery work during startup if logical replication is enabled.

    • Fixed an issue for the better error handling of procedures with large numbers of parameters.

    • Fixed an issue with the aws_s3 extension where loading a large number of records can time out.

    Aurora PostgreSQL 11.18.0, January 20, 2023

    High priority stability enhancements

    • Fixed an issue where an upgrade fails because the oldest MultiXactId is updated incorrectly.

    • Fixed an issue where the commit latency metrics weren't updated.

    • Fixed an issue that could lead to a brief period of unavailability.

    General stability enhancements

    • Fixed an issue that caused DB instance migration failures.

    • Fixed an issue where the DB fails to start because of an inconsistency in the metadata.

    • Improved the error handling and diagnosability.

    • Upgraded the RDKit extension to version 4.2.

    • Upgraded the GDAL library to version 3.4.3.

    • Fixed an issue with the pg_repack extension.

    • Improved the collation library (glibc) handling with a new independent default collation library.

    PostgreSQL 11.17 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.17. For more information about the improvements in PostgreSQL 11.17, see PostgreSQL release 11.17.

    Aurora PostgreSQL 11.17.3, October 17, 2023

    High priority stability enhancements
    High priority enhancements

    • Fixed an issue which blocked vacuum operations after the restart of an Aurora replica.

    • Fixed an issue that would cause high CPU usage and prevent new connections.

    General stability enhancements

    • Fixed an issue which causes the stats collector process to repeatedly restart.

    • Improved the scale times for Aurora Serverless v2.

    • Fix a bug which can cause unavailability during ZDP.

    • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase.

    • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an S3 bucket with a name containing dots.

    • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

      • aws_lambda.connect_timeout_ms.

      • aws_lambda.request_timeout_ms.

    • Fixed an issue which can cause a database instance to restart while executing I/O intensive read workloads.

    • Updated the plv8, pll, and plcoffee extensions to version 2.3.15.

    Aurora PostgreSQL 11.17.2, March 2, 2023

    General stability enhancements

    • Fixed an issue that increased the amount of recovery work during startup if logical replication is enabled.

    • Fixed an issue for better error handling of procedures with large numbers of parameters.

    • Fixed an issue with the aws_s3 extension where loading a large number of records can time out.

    Aurora PostgreSQL 11.17.1, December 13, 2022

    General stability enhancements

    • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

    • Fixed an issue where the engine experiences stability issues during database minor and patch release upgrades.

    • Fixed an issue that could cause data inconsistency during replication.

    Aurora PostgreSQL 11.17.0, November 09, 2022

    General stability enhancements

    • Improved buffer cache scavenging when the buffer cache is in duress.

    • Fixed an issue in Database Activity Streams that leads to high memory consumption.

    • Fixed an issue that caused DB instance restarts.

    • Fixed an issue where a DB instance restarts recursively while generating monitoring metrics during a crash.

    • Fixed an issue where a DB instance restarted during performance metric collection.

    • Fixed an issue where an attempt to connect to the database would fail with SSLV3_ALERT_CERTIFICATE_UNKNOWN.

    • Improved the diagnostic logging around setting invalid hint bits.

    • Fixed an issue where autovacuum would incorrectly skip tables.

    • Improved the logical replication prefetching.

    • Fixed a durability issue in the GIN indexes.

    • Fixed an issue to detect and cancel stuck major version upgrades.

    • Fixed an issue in hash join that could lead to increased memory consumption.

    • Improved the logical replication performance.

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    • Upgraded the GEOS version to 3.10.3.

    • Updated the PostGIS extension to version 3.2.3.

    • Fixed an issue with st_orientedenvelope that caused it to loop with a 1-D input to return 0.

    • Fixed an issue where the connection to SQL Server using tds_fdw fails.

    PostgreSQL 11.16 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.16. For more information about the improvements in PostgreSQL 11.16, see PostgreSQL release 11.16.

    Aurora PostgreSQL 11.16.6, October 19, 2023

    High priority stability enhancements
    High priority enhancements

    • Fixed an issue which blocked vacuum operations after the restart of an Aurora replica.

    • Fixed an issue that would cause high CPU usage and prevent new connections.

    General stability enhancements

    • Fixed an issue which causes the stats collector process to repeatedly restart.

    • Improved the scale times for Aurora Serverless v2.

    • Fix a bug which can cause unavailability during ZDP.

    • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase.

    • Fixed an issue where, in rare cases, the aws_s3 extension could fail to import from an S3 bucket with a name containing dots.

    • Provided options to configure the timeouts within the aws_lambda extension. By setting the following parameters, customers will now be able to change the connect and request timeouts for AWS Lambda integration:

      • aws_lambda.connect_timeout_ms.

      • aws_lambda.request_timeout_ms.

    • Updated the plv8, pll, and plcoffee extensions to version 2.3.15.

    • Introduced diagnostics for transient metadata used for I/O.

    Aurora PostgreSQL 11.16.5, December 14, 2022

    General stability enhancements

    • Fixed an issue where the engine experiences stability issues during database minor and patch release upgrades.

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    • Fixed an issue that could cause data inconsistency during replication.

    Aurora PostgreSQL 11.16.4, November 17, 2022

    High priority stability enhancements

    • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

    Aurora PostgreSQL 11.16.3, October 13, 2022

    High priority stability enhancements

    • Fixed a PLV8 issue where the base parameter doesn't get loaded properly into the memory.

    General stability enhancements

    • Fixed a bug where Aurora PostgreSQL can't file the relfilenode.

    • Fixed a stuck scaling issue when the current scaling event times out.

    • Upgraded the PostGIS extension to version 3.1.7.

    • Fixed an issue where extended query messages might be lost during zero-downtime patching (ZDP) causing the extended query to hang after the ZDP completion.

    Aurora PostgreSQL 11.16.1, July 6, 2022

    Critical stability enhancements

    • Fixed an issue that could cause periods of unavailability during a storage node restart.

    High priority stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

    • Fixed an issue when the connection to SQL Server fails using the TDS_FDW extension to query a foreign table.

    • Fixed an issue that caused connections using the provided root certificate to fail.

    • Improved the diagnostic and supportability information in case of inconsistent B-tree index entries.

    Aurora PostgreSQL 11.16.0, June 9, 2022

    New features
    Critical updates

    • Fixed a replay crash due to an LSN mismatch.

    • Fixed the aws_s3 extension to prevent invalid region injection.

    High stability updates

    • Fixed multiple issues related to out-of-memory conditions which could result in brief periods of unavailability.

    General stability updates

    • Fixed a lock contention crash during an Aurora Serverless v1 scaling event.

    • Fixed an issue where logical replication becomes stuck after a restart.

    • Fixed multiple issues that could lead to brief periods of unavailability.

    • Fixed, during redo, an invalid page hit on the Generic Redo for GENERIC_XLOG_FULL_PAGE_DATA. This happens due to a timing hole between generating the log record and then writing the metadata for the record on the RW node and the RO node replays between those operations.

    • Improved the query performance by supporting parallel workers.

    • Upgraded the plugin wal2json version to 2.4.

    • Upgraded the pglogical extension to version 2.4.1.

    PostgreSQL 11.15 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.15. For more information about the improvements in PostgreSQL 11.15, see PostgreSQL release 11.15.

    Aurora PostgreSQL 11.15.6, December 16, 2022

    General enhancements

    • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    • Updated the PostGIS extension to version 3.1.7.

    Aurora PostgreSQL 11.15.4, July 18, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    Critical enhancements

    • Fixed an issue during a storage node restart that could result in periods of unavailability.

    High stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions that could result in brief periods of unavailability.

    • Fixed an issue related to the existence of duplicate relation files that could result in periods of unavailability.

    • Fixed a defect where the validation of cached plans may lead to a database restart when the plan was previously invalidated.

    Aurora PostgreSQL 11.15.1, April 27, 2022

    High priority stability enhancements

    • Fixed an issue that could cause incorrect WriteIOPS reporting in the AWS console.

    • Fixed an issue that could cause unavailability after removal of a read node from a cluster.

    General enhancements

    • Fixed an issue that could cause an engine restart during periods of low free memory.

    Aurora PostgreSQL 11.15.0, March 29, 2022

    High priority stability enhancements

    • Fixed multiple issues that may result in unavailability of a read node.

    • Fixed an issue that may result in a read node being unable to replay WAL requiring the replication slot to be dropped and resynchronized.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    General enhancements

    • Fixed a small memory leak on read nodes when commit_ts is set.

    • Fixed an issue that caused Performance Insights to show "Unknown wait event".

    • Fixed an issue that could cause an import from Amazon S3 to fail when using the aws_s3 extension.

    • Fixed multiple issues that could result in periods of unavailability when using apg_plan_mgmt.

    • Fixed multiple issues that could result in periods of unavailability when QPM is enabled.

    PostgreSQL 11.14 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.14. For more information about the improvements in PostgreSQL 11.14, see PostgreSQL release 11.14.

    Aurora PostgreSQL 11.14.7, August 24, 2023

    General enhancements

    • Fixed an issue which causes the stats collector process to repeatedly restart.

    • Fixed an issue preventing pglogical from logging conflicting rows during the apply phase.

    Aurora PostgreSQL 11.14.6, December 16, 2022

    General enhancements

    • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    • Updated the PostGIS extension to version 3.1.7.

    Aurora PostgreSQL 11.14.4, July 20, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    Critical enhancements

    • Fixed an issue during a storage node restart that could result in periods of unavailability.

    High stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions that could result in brief periods of unavailability.

    • Fixed an issue related to the existence of duplicate relation files that could result in periods of unavailability.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    • Fixed an issue that caused Performance Insights to show "Unknown wait event".

    Aurora PostgreSQL 11.14.3, April 13, 2022

    General enhancements

    • Fixed a bug that could cause an engine restart during periods of low free memory.

    Aurora PostgreSQL 11.14.1

    Security enhancements

    • Updated the PostGIS extension from version 3.1.4 to 3.1.5. This update contains a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the pg_bigm extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Aurora PostgreSQL 11.14.0

    Critical stability enhancements

    • Fixed a bug where logical replication may hang resulting in the replay falling behind on the read node. The instance may eventually restart.

    Additional improvements and enhancements

    • Fixed a buffer cache bug that could cause brief periods of unavailability.

    • Fixed a bug in the apg_plan_mgmt extension where an index based plan was not being enforced.

    • Fixed a bug in the pg_logical extension that could cause brief periods of unavailability due to improper handling of NULL arguments.

    • Fixed an issue where orphaned files caused major version upgrades to fail.

    • Fixed incorrect Aurora Storage Daemon log write metrics.

    • Fixed multiple bugs that could result in WAL replay falling behind and eventually causing the reader instances to restart.

    • Improved the Aurora buffer cache page validation on reads.

    • Improved the Aurora storage metadata validation.

    • Updated the pg_hint_pan extension to v1.3.7.

    PostgreSQL 11.13 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.13. For more information about the improvements in PostgreSQL 11.13, see PostgreSQL release 11.13.

    Aurora PostgreSQL 11.13.6, December 19, 2022

    General enhancements

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    Aurora PostgreSQL 11.13.4, July 6, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    General enhancements

    • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    • Fixed an issue that could cause Performance Insights to display "Unknown wait event".

    • Fixed an issue that could result in periods of unavailability due to the existence of duplicate relation files.

    Aurora PostgreSQL 11.13.3, June 6, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    High priority stability updates

    • Fixed an issue that can cause a restart of the postmaster process in Amazon Aurora Serverless v1.

    • Fixed an issue that can cause a restart of the Aurora Runtime process in Amazon Aurora Serverless v1.

    General enhancements

    • Fixed a memory leak in the Aurora Runtime that could lead to an out-of-memory condition.

    Aurora PostgreSQL 11.13.2, April 12, 2022

    General enhancements

    • Fixed a buffer cache bug that could cause brief periods of unavailability.

    Aurora PostgreSQL 11.13.1

    Security enhancements

    • Updated the PostGIS extension from version 3.1.4 to 3.1.5. This update contains a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the pg_bigm extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Aurora PostgreSQL 11.13.0

    Critical stability enhancements

    • Fixed an issue where, in rare circumstances, a data cache of a read node may be inconsistent following a restart of that node.

    High priority stability enhancements

    • Fixed an issue where queries may become unresponsive due to I/O resource exhaustion triggered by prefetch.

    • Fixed an issue where Aurora may flag an issue following a major version update with the message: "PANIC: could not access status of next transaction id xxxxxxxx".

    Additional improvements and enhancements

    • Fixed an issue where read nodes restart due to a replication origin cache lookup failure.

    • Fixed an issue where read queries may time out on read nodes during the replay of lazy truncation triggered by vacuum on the write node.

    • Fixed an issue that causes Performance Insights to incorrectly set the backend type of a database connection.

    • Fixed an issue where the aurora_postgres_replica_status function returned stale or lagging CPU stats.

    • Fixed an issue where, in rare cases, an Aurora Global Database secondary mirror cluster may restart due to a stall in the log apply process.

    • Fixed an issue with the apg_plan_mgmt extension where the planning and execution times were reported as 0.

    • Removed support for the DES, 3DES, and RC4 cipher suites.

    • Updated PostGIS extension to version 3.1.4.

    • Added support for postgis_raster extension version 3.1.4.

    PostgreSQL 11.12, Aurora PostgreSQL 3.6 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.12. For more information about the improvements in PostgreSQL 11.12, see PostgreSQL release 11.12.

    Aurora PostgreSQL 11.12.5, December 30, 2022

    General enhancements

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    Aurora PostgreSQL 11.12.4, July 14, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    High priority stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    • Fixed an issue that caused Performance Insights to show "Unknown wait event".

    Aurora PostgreSQL 3.6.2

    Security enhancements

    • Modified the pg_bigm extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched the PostgreSQL community fix for CVE-2021-3677: “Memory disclosure in certain queries”. CVE-2020-14350

    • Backpatched postgis to PostGIS 2.5.2. This is a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Aurora PostgreSQL 3.6.1

    Critical stability enhancements

    • Fixed an issue where, in rare circumstances, a data cache of a read node may be inconsistent following a restart of that node.

    High priority stability enhancements

    • Fixed an issue where queries may become unresponsive due to I/O resource exhaustion triggered by prefetch.

    • Fixed an issue where Aurora may flag an issue following a major version update with the message: "PANIC: could not access status of next transaction id xxxxxxxx".

    • Fixed multiple issues in the Aurora storage daemon that could lead to brief periods of unavailability when specific network configurations are used.

    • Fixed an out-of-memory crash issue with Aurora storage daemon that leads to writer node restart. This also reduces the overall system memory consumption.

    Additional improvements and enhancements

    • Fixed an issue where read nodes restart due to a replication origin cache lookup failure.

    • Fixed an issue with the apg_plan_mgmt extension where planning and execution time were reported as 0.

    • Fixed an issue that causes Performance Insights to incorrectly set the backend type of a database connection.

    • Fixed an issue where in rare cases, an Aurora Global Database secondary mirror cluster may restart due to a stall in the log apply process.

    • Fixed an issue where orphaned files caused failed translations in read codepaths during or after major version upgrade.

    • Fixed multiple issues in the Aurora storage daemon that could lead to brief periods of unavailability when specific network configurations are used.

    • Fixed an out-of-memory crash issue with Aurora storage daemon that leads to writer node restart. This also reduces the overall system memory consumption.

    Aurora PostgreSQL 3.6.0

    High priority stability enhancements

    • Fixed an issue where creating a database from an existing template database with tablespace resulted in an error with the message ERROR: could not open file pg_tblspc/...: No such file or directory.

    • Fixed an issue where, in rare cases, an Aurora replica may be unable to start when a large number of PostgreSQL subtransactions (i.e. SQL savepoints) have been used.

    • Fixed an issue where, in rare circumstances, read results may be inconsistent for repeated read requests on replica nodes.

    Additional improvements and enhancements

    • Upgraded OpenSSL to 1.1.1k.

    • Reduced CPU usage and memory consumption of the WAL apply process on Aurora replicas for some workloads.

    • Improved metadata protection from accidental erasure.

    • Improved safety checks in the write path to detect incorrect writes to metadata.

    • Improved security by removing 3DES and other older ciphers for SSL/TLS connections.

    • Fixed an issue where a duplicate file entry can prevent the Aurora PostgreSQL engine from starting up.

    • Fixed an issue that could cause temporary unavailability under heavy workloads.

    • Added back ability to use a leading forward slash in the Amazon S3 path during S3 import.

    • Updated the orafce extension to version 3.16.

    PostgreSQL 11.11, Aurora PostgreSQL 3.5 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.11. For more information about the improvements in PostgreSQL 11.11, see PostgreSQL release 11.11.

    Aurora PostgreSQL 3.5.1

    Security enhancements

    • Modified the pg_bigm extension to mitigate a security issue during create extension. The issue was addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched the PostgreSQL community fix for CVE-2021-3677: “Memory disclosure in certain queries”. For more information, see CVE-2021-3677

    • Backpatched postgis to PostGIS 2.5.2. This is a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched an input validation error in the log_fdw extension function parameters.

    Aurora PostgreSQL 3.5.0

    New features

    • Added support for the following extensions:

      • The pg_proctab extension version 0.0.9

      • The pg_bigm extension version 1.2

    High priority stability enhancements

    • Fixed a bug where in rare cases a reader had inconsistent results when it restarted while a transaction with more than 64 subtransactions was being processed.

    • Backported fixes for the following PostgreSQL community security issues:

    Additional improvements and enhancements

    • Fixed a bug where the database could not be started when there were many relations in memory-constrained environments.

    • Fixed a bug in the apg_plan_mgmt extension that could cause brief periods of unavailability due to an internal buffer overflow.

    • Fixed a bug on reader nodes that could cause brief periods of unavailability during WAL replay.

    • Fixed a bug in the rds_activity_stream extension that caused an error during startup when attempting to log audit events.

    • Fixed bugs in the aurora_replica_status function where rows were sometimes partially populated and some values such as Replay Latency, and CPU usage were always 0.

    • Fixed a bug where the database engine would attempt to create shared memory segments larger than the instance total memory and fail repeatedly. For example, attempts to create 128 GiB shared buffers on a db.r5.large instance would fail. With this change, requests for total shared memory allocations larger than the instance memory allow setting the instance to incompatible parameters.

    • Added logic to clean up unnecessary pg_wal temporary files on a database startup.

    • Fixed a bug that reported ERROR: rds_activity_stream stack item 2 not found on top - cannot pop when attempting to create the rds_activity_stream extension.

    • Fixed a bug that could cause the error failed to build any 3-way joins in a correlated IN subquery under an EXISTS subquery.

    • Backported the following performance improvement from the PostgreSQL community: pg_stat_statements: add missing check for pgss_enabled().

    • Fixed a bug that could cause brief periods of unavailability due to running out of memory when creating the postgis extension with pgAudit enabled.

    • Fixed a bug when using outbound logical replication to synchronize changes to another database that could fail with an error message like ERROR: could not map filenode "base/16395/228486645" to relation OID.

    • Fixed a bug that could cause a brief period of unavailability when canceling a transaction.

    • Fixed a bug where the rds_ad role wasn't created after upgrading from a version of Aurora PostgreSQL that doesn't support Microsoft Active Directory authentication.

    • Added btree page checks to detect tuple metadata inconsistency.

    • Fixed a bug in asynchronous buffer reads that could cause brief periods of unavailability on reader nodes during WAL replay.

    PostgreSQL 11.9, Aurora PostgreSQL 3.4

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.9. For more information about the improvements in PostgreSQL 11.9, see PostgreSQL release 11.9.

    Aurora PostgreSQL 11.9.12, August 7, 2024

    Critical stability enhancements

    • Fixed a pg_repack issue causing two vacuums to concurrently process the same table.

    • Fixed a V8 Engine CVE-2018-6065 for PLV8 2.x.

    Aurora PostgreSQL 11.9.11, March 13, 2024

    General stability enhancements

    • Allow rds_superuser to terminate backends which are not explicitly associated with a role.

    • Upgraded PLV8 extension to version 2.3.15.

    High priority stability enhancements

    • Backported fixes for the following PostgreSQL community security issues:

    Critical stability enhancements

    • Fixed an issue related to apg_plan_mgmt.

    • Fixed an issue where active transactions during slot creation may be partially replicated by the slot.

    • Fixed a deadlock issue in Aurora storage which can result in writer failover.

    Aurora PostgreSQL 11.9.9, December 27, 2023

    Critical stability enhancements
    General stability enhancements

    • Fixed an issue with logical replication actions being performed by someone other than the table owner

    Aurora PostgreSQL 3.4.8, October 10, 2023

    High priority stability enhancements

    Aurora PostgreSQL 3.4.7, December 22, 2022

    General enhancements

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    Aurora PostgreSQL 3.4.6, July 8, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    Aurora PostgreSQL 3.4.5

    Security enhancements

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched the PostgreSQL community fix for CVE-2021-3677: “Memory disclosure in certain queries”. For more information, see CVE-2021-3677

    • Backpatched the PostgreSQL community fix for CVE-2021-3393: "Partition constraint violation errors leak values of denied columns". For more information, see CVE-2021-3393

    • Backpatched postgis to PostGIS 2.5.2. This is a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched an input validation error in the log_fdw extension function parameters.

    Aurora PostgreSQL 3.4.3

    High priority stability enhancements

    • Provided a patch for PostgreSQL community security issues CVE-2021-32027, CVE-2021-32028 and CVE-2021-32029.

    Additional improvements and enhancements

    • Fixed a bug in the aws_s3 extension to allow import of objects with leading forward slashes in the object identifier.

    • Fixed a bug in the rds_activity_stream extension that caused an error during startup when attempting to log audit events.

    • Fixed a bug that returned an ERROR when attempting to create the rds_activity_stream extension.

    • Fixed a bug that could cause brief periods of unavailability due to running out of memory when creating the postgis extension with pgAudit enabled.

    • Fixed multiple issues in the Aurora storage daemon that could lead to brief periods of unavailability when specific network configurations are used.

    Aurora PostgreSQL 3.4.2

    High priority stability enhancements

    • Fixed a bug where in rare cases a reader had inconsistent results when it restarted while a transaction with more than 64 subtransactions was being processed.

    Additional improvements and enhancements

    • Fixed a bug that could lead to intermittent unavailability due to a race condition when handling responses from storage nodes.

    • Fixed a bug that could lead to intermittent unavailability due to the rotation of network encryption keys.

    • Fixed a bug that could lead to intermittent unavailability due to heat management of the underlying storage segments.

    • Fixed a bug where a large S3 import with thousands of clients can cause one or more of the import clients to stop responding.

    • Removed a restriction that prevented setting configuration variable strings that contained brazil.

    • Fixed a bug that could lead to intermittent unavailability if a reader node runs a query that access many tables while the writer node is acquiring exclusive locks on all of the same tables.

    Aurora PostgreSQL 3.4.1

    Critical stability enhancements

    • Fixed a bug that caused a read replica to unsuccessfully restart repeatedly in rare cases.

    • Fixed a bug where a cluster became unavailable when attempting to create more than 16 read replicas or Aurora global database secondary AWS Regions. The cluster became available again when the new read replica or secondary AWS Region was removed.

    Additional improvements and enhancements

    • Fixed a bug that when under heavy load, snapshot import, COPY import, or S3 import stopped responding in rare cases.

    • Fixed a bug where a read replica might not join the cluster when the writer was very busy with a write-intensive workload.

    • Fixed a bug where a cluster could be unavailable briefly when a high-volume S3 import was running.

    • Fixed a bug that caused a cluster to take several minutes to restart if a logical replication stream was terminated while handling many complex transactions.

    • Disallowed the use of both IAM and Kerberos authentication for the same user.

    Aurora PostgreSQL 3.4.0

    New features
    Critical stability enhancements

    • None

    High priority stability enhancements

    • Fixed a bug in Aurora PostgreSQL replication that could result in the error message ERROR: MultiXactId nnnn has not been created yet -- apparent wraparound.

    • Fixed a bug where in some cases, DB clusters that have logical replication enabled did not remove truncated WAL segment files from storage. This resulted in volume size growth.

    • Backported fixes for the following PostgreSQL community security issues:

    • Fixed a bug in the pg_stat_statements extension that caused excessive CPU consumption.

    Additional improvements and enhancements

    • You can now use pg_replication_slot_advance to advance a logical replication slot for the roles rds_replication and rds_superuser.

    • Improved the asynchronous mode performance of database activity streams.

    • Reduced the delay when publishing to CloudWatch the rpo_lag_in_msec metric for Aurora global database clusters.

    • Aurora PostgreSQL no longer falls behind on a read node when the backend is blocked writing to the database client.

    • Fixed a bug that in rare cases caused a brief period of unavailability on a read replica when the storage volume grew.

    • Fixed a bug when creating a database that could return the following: ERROR: could not create directory on local disk

    • Updated data grid files to fix errors or incorrect transformation results from the ST_Transform method of the PostGIS extension.

    • Fixed a bug where in some cases replaying XLOG_BTREE_REUSE_PAGE records on Aurora reader instances caused unnecessary replay lag.

    • Fixed a small memory leak in a b-tree index that could lead to an out of memory condition.

    • Fixed a bug in the GiST index that could result in an out of memory condition after promoting an Aurora read replica.

    • Fixed an S3 import bug that reported ERROR: HTTP 403. Permission denied when importing data from a file inside an S3 subfolder.

    • Fixed a bug in the aws_s3 extension for pre-signed URL handling that could result in the error message S3 bucket names with a period (.) are not supported.

    • Fixed a bug in the aws_s3 extension where an import might be blocked indefinitely if an exclusive lock was taken on the relation prior to beginning the operation.

    • Fixed a bug related to replication when Aurora PostgreSQL is acting as a physical replica of an RDS for PostgreSQL instance that uses GiST indexes. In rare cases, this bug caused a brief period of unavailability after promoting the Aurora cluster.

    • Fixed a bug in database activity streams where customers were not notified of the end of an outage.

    • Updated the pg_audit extension to version 1.3.1.

    PostgreSQL 11.8, Aurora PostgreSQL 3.3 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.8. For more information about the improvements in PostgreSQL 11.8, see PostgreSQL release 11.8.

    Aurora PostgreSQL release 3.3.2

    Critical stability enhancements

    • None

    High priority stability enhancements

    • Fixed a bug in Aurora PostgreSQL replication that could result in the error message ERROR: MultiXactId nnnn has not been created yet -- apparent wraparound.

    • Fixed a bug where in some cases, DB clusters that have logical replication enabled did not remove truncated WAL segment files from storage. This resulted in volume size growth.

    • Fixed an issue with creating a global database cluster in a secondary region.

    • Backported fixes for the following PostgreSQL community security issues:

    • Fixed a bug in the pg_stat_statements extension that caused excessive CPU consumption.

    Additional improvements and enhancements

    • Aurora PostgreSQL no longer falls behind on a read node when the backend is blocked writing to the database client.

    • Reduced the delay when publishing to CloudWatch the rpo_lag_in_msec metric for Aurora global database clusters.

    • Fixed a bug where a DROP DATABASE statement didn't remove any relation files.

    • Fixed a bug where in some cases replaying XLOG_BTREE_REUSE_PAGE records on Aurora reader instances caused unnecessary replay lag.

    • Fixed a small memory leak in a b-tree index that could lead to an out of memory condition.

    • Fixed a bug in the aurora_replica_status() function where the server_id field was sometimes truncated.

    • Fixed a bug where a log record was incorrectly processed causing the Aurora replica to crash.

    • Fixed an S3 import bug that reported ERROR: HTTP 403. Permission denied when importing data from a file inside an S3 subfolder.

    • You can now use pg_replication_slot_advance to advance a logical replication slot for the roles rds_replication and rds_superuser.

    • Improved performance of the asynchronous mode for database activity streams.

    • Fixed a bug in the aws_s3 extension that could result in the error message S3 bucket names with a period (.) are not supported.

    • Fixed a race condition that caused valid imports to intermittently fail.

    • Fixed a bug related to replication when Aurora PostgreSQL is acting as a physical replica of an RDS for PostgreSQL instance that uses GiST indexes. In rare cases, this bug caused a brief period of unavailability after promoting the Aurora DB cluster.

    • Fixed a bug in the aws_s3 extension where an import may be blocked indefinitely if an exclusive lock was taken on the relation prior to beginning the operation.

    Aurora PostgreSQL 3.3.1

    You can find the following improvements in this release.

    Critical stability enhancements

    1. Fixed a bug that appears when the NOT EXISTS operator incorrectly returns TRUE, which can only happen when the following unusual set of circumstances occurs:

      • A query is using the NOT EXISTS operator.

      • The column or columns being evaluated against the outer query in the NOT EXISTS subquery contain a NULL value.

      • There isn't a another predicate in the subquery that removes the need for the evaluation of the NULL values.

      • The filter used in the subquery does not use an index seek for its execution.

      • The operator isn't converted to a join by the query optimizer.

    Aurora PostgreSQL 3.3.0

    New features

    • Added support for the RDKit extension version 3.8.

      The RDKit extension provides modeling functions for cheminformatics. Cheminformatics is storing, indexing, searching, retrieving, and applying information about chemical compounds. For example, with the RDKit extension you can construct models of molecules, search for molecular structures, and read or create molecules in various notations. You can also perform research on data loaded from the ChEMBL website or a SMILES file. The Simplified Molecular Input Line Entry System (SMILES) is a typographical notation for representing molecules and reactions. For more information, see The RDKit database cartridge in the RDKit documentation.

    • Added support for a minimum TLS version

      Support for a minimum Transport Layer Security (TLS) version is back ported from PostgreSQL 12. It allows the Aurora PostgreSQL server to constrain the TLS protocols with which a client is allowed to connect via two new PostgreSQL parameters. These parameters include ssl_min_protocol_versionand ssl_max_protocol_version. For example, to limit client connections to the Aurora PostgreSQL server to at least TLS 1.2 protocol version, set the ssl_min_protocol_version to TLSv1.2.

    • Added support for the pglogical extension version 2.2.2.

      The pglogical extension is a logical streaming replication system that provides additional features beyond what's available in PostgreSQL native logical replication. Features include conflict handling, row filtering, DDL/sequence replication and delayed apply. You can use the pglogical extension to set up replication between Aurora PostgreSQL clusters, between RDS for PostgreSQL and Aurora PostgreSQL, and with PostgreSQL databases running outside of RDS.

    • Aurora dynamically resizes your cluster storage space. With dynamic resizing, the storage space for your Aurora DB cluster automatically decreases when you remove data from the DB cluster. For more information, see Storage scaling in the Amazon Aurora User Guide.

      Note

      The dynamic resizing feature is being deployed in phases to the AWS Regions where Aurora is available. Depending on the Region where your cluster is, this feature might not be available yet. For more information, see the What's New announcement.

    Critical stability enhancements

    • Fixed a bug related to heap page extend that in rare cases resulted in longer recovery time and impacted availability.

    High priority stability enhancements

    • Fixed a bug in Aurora Global Database that could cause delays in upgrading the database engine in a secondary AWS Region. For more information, see Using Amazon Aurora global databases in the Amazon Aurora User Guide.

    • Fixed a bug that in rare cases caused delays in upgrading a database to engine version 11.8.

    Additional improvements and enhancements

    • Fixed a bug where the Aurora replica crashed when workloads with heavy subtransactions are made on the writer instance.

    • Fixed a bug where the writer instance crashed due to a memory leak and the depletion of memory used to track active transactions.

    • Fixed a bug that lead to a crash due to improper initialization when there is no free memory available during PostgreSQL backend startup.

    • Fixed a bug where an Aurora PostgreSQL Serverless DB cluster might return the following error after a scaling event: ERROR: prepared statement "S_6" already exists.

    • Fixed an out-of-memory problem when issuing the CREATE EXTENSION command with PostGIS when Database Activity Streams is enabled.

    • Fixed a bug where a SELECT query might incorrectly return the error Attempting to read past EOF of relation rrrr. blockno=bbb nblocks=nnn.

    • Fixed a bug where the database might be unavailable briefly due to error handling in database storage growth.

    • Fixed a bug in Aurora PostgreSQL Serverless where queries that executed on previously idle connections got delayed until the scale operation completed.

    • Fixed a bug where an Aurora PostgreSQL DB cluster with Database Activity Streams enabled might report the beginning of a potential loss window for activity records, but does not report the restoration of connectivity.

    • Fixed a bug with the aws_s3.table_import_from_s3 function where a COPY from S3 failed with the error HTTP error code: 248. For more information, see aws_s3.table_import_from_s3 in the Amazon Aurora User Guide.

    PostgreSQL 11.7, Aurora PostgreSQL 3.2 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.7. For more information about the improvements in PostgreSQL 11.7, see PostgreSQL release 11.7.

    Aurora PostgreSQL 3.2.7

    You can find the following improvements in this release.

    Critical stability enhancements

    • None

    High priority stability enhancements
    Additional improvements and enhancements

    • None

    Aurora PostgreSQL 3.2.6

    You can find the following improvements in this release.

    Critical stability enhancements

    • None

    High priority stability enhancements

    • Fixed a bug in Aurora PostgreSQL replication that might result in the error message, ERROR: MultiXactId nnnn has not been created yet -- apparent wraparound.

    Additional improvements and enhancements

    • Fixed a bug that in rare cases caused brief read replica unavailability when storage volume grew.

    • Aurora PostgreSQL Serverless now supports execution of queries on all connections during a scale event.

    • Fixed a bug in Aurora PostgreSQL Serverless where a leaked lock resulted in a prolonged scale event.

    • Fixed a bug where the aurora_replica_status function showed truncated server identifiers.

    • Fixed a bug in Aurora PostgreSQL Serverless where connections being migrated during a scale event disconnected with the message: "ERROR: could not open relation with OID ....

    • Fixed a small memory leak in a b-tree index that could lead to an out of memory condition.

    • Fixed a bug in a GiST index that might result in an out-of-memory condition after promoting an Aurora Read Replica.

    • Improved performance for Database Activity Streams.

    • Fixed a bug in Database Activity Streams where customers were not notified when an outage ended.

    • Fixed a bug in the aws_s3 extension for pre-signed URL handling that could have resulted in the error message S3 bucket names with a period (.) are not supported.

    • Fixed a bug in the aws_s3 extension where incorrect error handling could lead to failures during the import process.

    • Fixed a bug in the aws_s3 extension where an import may be blocked indefinitely if an exclusive lock was taken on the relation prior to beginning the operation.

    Aurora PostgreSQL 3.2.4

    You can find the following improvements in this release.

    Critical stability enhancements

    1. Fixed a bug that appears when the NOT EXISTS operator incorrectly returns TRUE, which can only happen when the following unusual set of circumstances occurs:

      • A query is using the NOT EXISTS operator.

      • The column or columns being evaluated against the outer query in the NOT EXISTS subquery contain a NULL value.

      • There isn't a another predicate in the subquery that removes the need for the evaluation of the NULL values.

      • The filter used in the subquery does not use an index seek for its execution.

      • The operator isn't converted to a join by the query optimizer.

    Aurora PostgreSQL 3.2.3

    You can find the following improvements in this release.

    Critical stability enhancements

    • None

    High priority stability enhancements

    • None

    Additional improvements and enhancements

    • Fixed a bug in Aurora PostgreSQL Serverless where queries that ran on previously idle connections got delayed until the scale operation completed.

    • Fixed a bug that might cause brief unavailability for heavy subtransaction workloads when multiple reader instances restart or rejoin the cluster.

    Aurora PostgreSQL 3.2.2

    You can find the following improvements in this release.

    Critical stability enhancements

    • Fixed a bug related to heap page extend that in rare cases resulted in longer recovery time and impacted availability.

    High priority stability enhancements

    • Fixed a bug in Aurora Global Database that could cause delays in upgrading the database engine in a secondary region. For more information, see Using Amazon Aurora global databases in the Amazon Aurora User Guide.

    • Fixed a bug that in rare cases caused delays in upgrading a database to engine version 11.7.

    Additional improvements and enhancements

    • Fixed a bug where the database might be unavailable briefly due to error handling in database storage growth.

    • Fixed a bug where a SELECT query might incorrectly return the error, Attempting to read past EOF of relation rrrr. blockno=bbb nblocks=nnn.

    • Fixed a bug where an Aurora PostgreSQL Serverless DB cluster might return the following error after a scaling event: ERROR: prepared statement "S_6" already exists.

    Aurora PostgreSQL 3.2.1

    New features

    You can find the following improvements in this release.

    Critical stability enhancements

    None.

    High priority stability enhancements

    • Improved performance and availability of read instances when applying DROP TABLE and TRUNCATE TABLE operations.

    • Fixed a small but continuous memory leak in a diagnostic module that could lead to an out-of-memory condition on smaller DB instance types.

    • Fixed a bug in the PostGIS extension which could lead to a database restart. This has been reported to the PostGIS community as https://trac.osgeo.org/postgis/ticket/4646.

    • Fixed a bug where read requests might stop responding due to incorrect error handling in the storage engine.

    • Fixed a bug that fails for some queries and results in the message ERROR: found xmin xxxxxx from before relfrozenxid yyyyyyy. This could occur following the promotion of a read instance to a write instance.

    • Fixed a bug where an Aurora serverless DB cluster might crash while rolling back a scale attempt.

    Additional improvements and enhancements

    • Improved performance for queries that read many rows from storage.

    • Improved performance and availability of reader DB instances during heavy read workload.

    • Enabled correlated IN and NOT IN subqueries to be transformed to joins when possible.

    • Improved the filtering estimation for enhanced semi-join filter pushdown by using multi-column statistics or indexes when available.

    • Improved read performance of the pg_prewarm extension.

    • Fixed a bug where an Aurora serverless DB cluster might report the message ERROR: incorrect binary data format in bind parameter ... following a scale event.

    • Fixed a bug where a serverless DB cluster might report the message ERROR: insufficient data left in message following a scale event.

    • Fixed a bug where an Aurora serverless DB cluster can experience prolonged or failed scale attempts.

    • Fixed a bug that resulted in the message ERROR: could not create file "base/xxxxxx/yyyyyyy" as a previous version still exists on disk: Success. Please contact AWS customer support. This can occur during object creation after PostgreSQL's 32-bit object identifier has wrapped around.

    • Fixed a bug where the write-ahead-log (WAL) segment files for PostgreSQL logical replication were not deleted when changing the wal_level value from logical to replica.

    • Fixed a bug in the pg_hint_plan extension where a multi-statement query could lead to a crash when enable_hint_table is enabled. This is tracked in the PostgreSQL community as https://github.com/ossc-db/pg_hint_plan/issues/25.

    • Fixed a bug where JDBC clients might report the message java.io.IOException: Unexpected packet type: 75 following a scale event in an Aurora serverless DB cluster.

    • Fixed a bug in PostgreSQL logical replication that resulted in the message ERROR: snapshot reference is not owned by resource owner TopTransaction.

    • Changed the following extensions:

      • Updated orafce to version 3.8

      • Updated pgTAP to version 1.1

    • Provided support for fault injection queries.

    PostgreSQL 11.6, Aurora PostgreSQL 3.1 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.6. For more information about the improvements in PostgreSQL 11.6, see PostgreSQL release 11.6.

    This release contains multiple critical stability enhancements. Amazon highly recommends upgrading your Aurora PostgreSQL clusters that use older PostgreSQL 11 engines to this release.

    Aurora PostgreSQL 3.1.4

    You can find the following improvements in this release.

    Critical stability enhancements

    • None

    High priority stability enhancements
    Additional improvements and enhancements

    • None

    Aurora PostgreSQL 3.1.3

    New features

    • Aurora PostgreSQL now supports the PostgreSQL vacuum_truncate storage parameter to manage vacuum truncation for specific tables. Set this storage parameter to false for a table to prevent the VACUUM SQL command from truncating the table's trailing empty pages.

    Critical stability enhancements

    • None

    High priority stability enhancements

    • Fixed a bug where reads from storage might stop responding due to incorrect error handling.

    Additional improvements and enhancements

    • None

    Aurora PostgreSQL 3.1.2

    This release contains a critical stability enhancement. Amazon highly recommends updating your older Aurora PostgreSQL 11-compatible clusters to this release.

    Critical stability enhancements

    • Fixed a bug in which a reader DB instance might temporarily use stale data. This could lead to wrong results such as too few or too many rows. This error is not persisted on storage, and will clear when the database page containing the row has been evicted from cache. This can happen when the primary DB instance enters a transaction snapshot overflow due to having more than 64 subtransactions in a single transaction. Applications susceptible to this bug include those that use SQL savepoints or PostgreSQL exception handlers with more than 64 subtransactions in the top transaction.

    High priority stability enhancements

    • Fixed a bug that might cause a reader DB instance to crash causing unavailability while attempting to the join the DB cluster. This can happen in some cases when the primary DB instance has a transaction snapshot overflow due to a high number of subtransactions. In this situation the reader DB instance will be unable to join until the snapshot overflow has cleared.

    Additional improvements and enhancements

    • Fixed a bug that prevented Performance Insights from determining the query ID of a running statement.

    Aurora PostgreSQL 3.1.1

    You can find the following improvements in this release.

    Critical stability enhancements

    • Fixed a bug in which the DB instance might be briefly unavailable due to the self-healing function of the underlying storage.

    High priority stability enhancements

    • Fixed a bug in which the database engine might crash causing unavailability. This occurred while scanning an included, non-key column of a B-Tree index. This only applies to PostgreSQL 11 "included column" indexes.

    • Fixed a bug that might cause the database engine to crash causing unavailability. This occurred if a newly established database connection encountered a resource exhaustion-related error during initialization after successful authentication.

    Additional improvements and enhancements

    • Provided a fix for the pg_hint_plan extension that could lead the database engine to crash causing unavailability. The open source issue can be tracked at https://github.com/ossc-db/pg_hint_plan/pull/45.

    • Fixed a bug where SQL of the form ALTER FUNCTION ... OWNER TO ... incorrectly reported ERROR: improper qualified name (too many dotted names).

    • Improved the performance of GIN index vacuum via prefetching.

    • Fixed a bug in open source PostgreSQL that could lead to a database engine crash causing unavailability. This occurred during parallel B-Tree index scans. This issue has been reported to the PostgreSQL community.

    • Improved the performance of in-memory B-Tree index scans.

    Aurora PostgreSQL 3.1.0

    You can find the following new features and improvements in this engine version.

    New features

    1. Support for exporting data to Amazon S3. For more information, see Exporting data from an Aurora PostgreSQL DB cluster to Amazon S3 in the Amazon Aurora User Guide.

    2. Support for Amazon Aurora Machine Learning. For more information, see Using machine learning (ML) with Aurora PostgreSQL in the Amazon Aurora User Guide.

    3. SQL processing enhancements include:

      • Optimizations for NOT IN with the apg_enable_not_in_transform parameter.

      • Semi-join filter pushdown enhancements for hash joins with the apg_enable_semijoin_push_down parameter.

      • Optimizations for redundant inner join removal with the apg_enable_remove_redundant_inner_joins parameter.

      • Improved ANSI compatibility options with the ansi_constraint_trigger_ordering, ansi_force_foreign_key_checks and ansi_qualified_update_set_target parameters.

      For more information, see Amazon Aurora PostgreSQL parameters in the Amazon Aurora User Guide.

    4. New and updated PostgreSQL extensions include:

    Critical stability enhancements

    1. Fixed a bug related to creating B-tree indexes on temporary tables that in rare cases might result in longer recovery time, and impact availability.

    2. Fixed a bug related to replication when Aurora PostgreSQL is acting as a physical replica of an RDS for PostgreSQL instance. In rare cases, this bug causes a log write failure that might result in longer recovery time, and impact availability.

    3. Fixed a bug related to handling of reads with high I/O latency that in rare cases might result in longer recovery time, and impact availability.

    High priority stability enhancements

    1. Fixed a bug related to logical replication in which wal segments are not properly removed from storage. This can result in storage bloat. To monitor this, view the TransactionLogDiskUsage parameter.

    2. Fixed multiple bugs, which cause Aurora to crash during prefetch operations on Btree indexes.

    3. Fixed a bug in which an Aurora restart might time out when logical replication is used.

    4. Enhanced the validation checks performed on data blocks in the buffer cache. This improves Aurora's detection of inconsistency.

    Additional improvements and enhancements

    1. The query plan management extension apg_plan_mgmt has an improved algorithm for managing plan generation for highly partitioned tables.

    2. Reduced startup time on instances with large caches via improvements in the buffer cache recovery algorithm.

    3. Improved the performance of the read-node-apply process under high transaction rate workloads by using changes to PostgreSQL LWLock prioritization. These changes prevent starvation of the read-node-apply process while the PostgreSQL ProcArray is under heavy contention.

    4. Improved handling of batch reads during vacuum, table scans, and index scans. This results in greater throughput and lower CPU consumption.

    5. Fixed a bug in which a read node might crash during the replay of a PostgreSQL SLRU-truncate operation.

    6. Fixed a bug where in rare cases, database writes might stall following an error returned by one of the six copies of an Aurora log record.

    7. Fixed a bug related to logical replication where an individual transaction larger than 1 GB in size might result in an engine crash.

    8. Fixed a memory leak on read nodes when cluster cache management is enabled.

    9. Fixed a bug in which importing an RDS for PostgreSQL snapshot might stop responding if the source snapshot contains a large number of unlogged relations.

    10. Fixed a bug in which the Aurora storage daemon might crash under heavy I/O load.

    11. Fixed a bug related to hot_standby_feedback for read nodes in which the read node might report the wrong transaction id epoch to the write node. This can cause the write node to ignore the hot_standby_feedback and invalidate snapshots on the read node.

    12. Fixed a bug in which storage errors that occur during CREATE DATABASE statements are not properly handled. The bug left the resulting database inaccessible. The correct behavior is to fail the database creation and return the appropriate error to the user.

    13. Improved handling of PostgreSQL snapshot overflow when a read node attempts to connect to a write node. Prior to this change, if the write node was in a snapshot overflow state, the read node was unable to join. A message appeared in the PostgreSQL log file in the form DEBUG: recovery snapshot waiting for non-overflowed snapshot or until oldest active xid on standby is at least xxxxxxx (now yyyyyyy). A snapshot overflow occurs when an individual transaction has created over 64 subtransactions.

    14. Fixed a bug related to common table expressions in which an error is incorrectly raised when a NOT IN class exists in a CTE. The error is CTE with NOT IN fails with ERROR: could not find CTE CTE-Name.

    15. Fixed a bug related to an incorrect last_error_timestamp value in the aurora_replica_status table.

    16. Fixed a bug to avoid populating shared buffers with blocks belonging to temporary objects. These blocks correctly reside in PostgreSQL backend local buffers.

    17. Changed the following extensions:

      • Updated pg_hint_plan to version 1.3.4.

      • Added plprofiler version 4.1.

      • Added pgTAP version 1.0.0.

    PostgreSQL 11.4, Aurora PostgreSQL 3.0 (Deprecated)

    Note

    The PostgreSQL engine version 11.4 with the Aurora PostgreSQL 3.0 is no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 11.4. For more information about the improvements in PostgreSQL 11.4, see PostgreSQL release 11.4.

    You can find the following improvements in this release.

    Improvements

    1. This release contains all fixes, features, and improvements present in Aurora PostgreSQL 2.3.5.

    2. Partitioning – Partitioning improvements include support for hash partitioning, enabling creation of a default partition, and dynamic row movement to another partition based on the key column update.

    3. Performance – Performance improvements include parallelism while creating indexes, materialized views, hash joins, and sequential scans to make the operations perform better.

    4. Stored procedures – SQL stored procedures now added support for embedded transactions.

    5. Autovacuum improvements – To provide valuable logging, the parameter rds.force_autovacuum_logging is ON by default in conjunction with the log_autovacuum_min_duration parameter set to 10 seconds. To increase autovacuum effectiveness, the values for the autovacuum_max_workers and autovacuum_vacuum_cost_limit parameters are computed based on host memory capacity to provide larger default values.

    6. Improved transaction timeout – The parameter idle_in_transaction_session_timeout is set to 24 hours. Any session that has been idle more than 24 hours is terminated.

    7. The tsearch2 module is no longer supported – If your application uses tsearch2 functions, update it to use the equivalent functions provided by the core PostgreSQL engine. For more information about the tsearch2 module, see PostgreSQL tsearch2.

    8. The chkpass module is no longer supported – For more information about the chkpass module, see PostgreSQL chkpass.

    9. Updated the following extensions:

      • address_standardizer to version 2.5.1

      • address_standardizer_data_us to version 2.5.1

      • btree_gin to version 1.3

      • citext to version 1.5

      • cube to version 1.4

      • hstore to version 1.5

      • ip4r to version 2.2

      • isn to version 1.2

      • orafce to version 3.7

      • pg_hint_plan to version 1.3.4

      • pg_prewarm to version 1.2

      • pg_repack to version 1.4.4

      • pg_trgm to version 1.4

      • pgaudit to version 1.3

      • pgrouting to version 2.6.1

      • pgtap to version 1.0.0

      • plcoffee to version 2.3.8

      • plls to version 2.3.8

      • plv8 to version 2.3.8

      • postgis to version 2.5.1

      • postgis_tiger_geocoder to version 2.5.1

      • postgis_topology to version 2.5.1

      • rds_activity_stream to version 1.3

    PostgreSQL 10 versions (Deprecated)

    PostgreSQL 10.21 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.21. For more information about the improvements in PostgreSQL 10.21, see PostgreSQL release 10.21.

    Aurora PostgreSQL 10.21.5, December 14, 2022

    General stability enhancements

    • Fixed an issue where the engine experienced stability issues.

    Aurora PostgreSQL 10.21.4, November 17, 2022

    High priority stability enhancements

    • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

    Aurora PostgreSQL 10.21.3, October 13, 2022

    High priority stability enhancements

    • Fixed a PLV8 issue where the base parameter doesn't get loaded properly into the memory.

    General stability enhancements

    • Fixed a bug where Aurora PostgreSQL can't file the relfilenode.

    • Fixed a stuck scaling issue when the current scaling event times out.

    • Upgraded the PostGIS extension to version 3.1.7.

    • Fixed an issue where extended query messages might be lost during zero-downtime patching (ZDP) causing the extended query to hang after the ZDP completion.

    Aurora PostgreSQL 10.21.1, July 6, 2022

    Critical stability enhancements

    • Fixed an issue that could cause periods of unavailability during a storage node restart.

    High priority stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

    • Fixed an issue when the connection to SQL Server fails using the TDS_FDW extension to query a foreign table.

    • Fixed an issue that caused connections using the provided root certificate to fail.

    • Improved the diagnostic and supportability information in case of inconsistent B-tree index entries.

    Aurora PostgreSQL 10.21.0, June 9, 2022

    New features
    Critical updates

    • Fixed a replay crash due to an LSN mismatch.

    • Fixed the aws_s3 extension to prevent invalid region injection.

    High stability updates

    • Fixed multiple issues related to out-of-memory conditions which could result in brief periods of unavailability.

    General stability updates

    • Fixed a lock contention crash during an Aurora Serverless v1 scaling event.

    • Fixed an issue where logical replication becomes stuck after a restart.

    • Fixed multiple issues that could lead to brief periods of unavailability.

    • Fixed, during redo, an invalid page hit on the Generic Redo for GENERIC_XLOG_FULL_PAGE_DATA. This happens due to a timing hole between generating the log record and then writing the metadata for the record on the RW node and the RO node replays between those operations.

    • Improved the query performance by supporting parallel workers.

    • Upgraded the plugin wal2json version to 2.4.

    • Upgraded the pglogical extension to version 2.4.1.

    PostgreSQL 10.20 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.20. For more information about the improvements in PostgreSQL 10.20, see PostgreSQL release 10.20.

    Aurora PostgreSQL 10.20.6, December 16, 2022

    General enhancements

    • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

    • Updated the PostGIS extension to version 3.1.7.

    Aurora PostgreSQL 10.20.4, July 18, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    Critical enhancements

    • Fixed an issue during a storage node restart that could result in periods of unavailability.

    High stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions that could result in brief periods of unavailability.

    • Fixed an issue related to the existence of duplicate relation files that could result in periods of unavailability.

    • Fixed a defect where the validation of cached plans may lead to a database restart when the plan was previously invalidated.

    Aurora PostgreSQL 10.20.1, April 27, 2022

    High priority stability enhancements

    • Fixed an issue that could cause incorrect WriteIOPS reporting in the AWS console.

    • Fixed an issue that could cause unavailability after removal of a read node from a cluster.

    General enhancements

    • Fixed an issue that could cause an engine restart during periods of low free memory.

    Aurora PostgreSQL 10.20.0, March 29, 2022

    High priority stability enhancements

    • Fixed multiple issues that may result in unavailability of a read node.

    • Fixed an issue that may result in a read node being unable to replay WAL requiring the replication slot to be dropped and resynchronized.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    General enhancements

    • Fixed a small memory leak on read nodes when commit_ts is set.

    • Fixed an issue that caused Performance Insights to show "Unknown wait event".

    • Fixed an issue that could cause an import from S3 to fail when using the aws_s3 extension.

    • Fixed multiple issues that could result in periods of unavailability when using apg_plan_mgmt.

    • Fixed multiple issues that could result in periods of unavailability when QPM is enabled.

    PostgreSQL 10.19 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.19. For more information about the improvements in PostgreSQL 10.19, see PostgreSQL release 10.19.

    Aurora PostgreSQL 10.19.6, December 16, 2022

    General enhancements

    • Fixed an issue that can cause increased network traffic when a writer instance transmits logs to a replica instance.

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    • Updated the PostGIS extension to version 3.1.7.

    Aurora PostgreSQL 10.19.4, July 20, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    Critical enhancements

    • Fixed an issue during a storage node restart that could result in periods of unavailability.

    High stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions that could result in brief periods of unavailability.

    • Fixed an issue related to the existence of duplicate relation files that could result in periods of unavailability.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    • Fixed an issue that caused Performance Insights to show "Unknown wait event".

    Aurora PostgreSQL 10.19.3, April 13, 2022

    General enhancements

    • Fixed a bug that could cause an engine restart during periods of low free memory.

    Aurora PostgreSQL 10.19.1

    Security enhancements

    • Updated the PostGIS extension from version 3.1.4 to 3.1.5. This update contains a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Aurora PostgreSQL 10.19.0

    Critical stability enhancements

    • Fixed a bug where logical replication may hang resulting in the replay falling behind on the read node. The instance may eventually restart.

    Additional improvements and enhancements

    • Fixed a buffer cache bug that could cause brief periods of unavailability.

    • Fixed a bug in the apg_plan_mgmt extension where an index based plan was not being enforced.

    • Fixed a bug in the pg_logical extension that could cause brief periods of unavailability due to improper handling of NULL arguments.

    • Fixed an issue where orphaned files caused major version upgrades to fail.

    • Fixed incorrect Aurora Storage Daemon log write metrics.

    • Fixed multiple bugs that could result in WAL replay falling behind and eventually causing the reader instances to restart.

    • Improved the Aurora buffer cache page validation on reads.

    • Improved the Aurora storage metadata validation.

    • Updated the pg_hint_pan extension to v1.3.6.

    PostgreSQL 10.18 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.18. For more information about the improvements in PostgreSQL 10.18, see PostgreSQL release 10.18.

    Aurora PostgreSQL 10.18.6, December 19, 2022

    General enhancements

    • Fixed an issue that causes database activity stream inconsistency when the monitoring agent is unavailable.

    Aurora PostgreSQL 10.18.4, July 6, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    General enhancements

    • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    • Fixed an issue that could cause Performance Insights to display "Unknown wait event".

    • Fixed an issue that could result in periods of unavailability due to the existence of duplicate relation files.

    Aurora PostgreSQL 10.18.3, June 6, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    High priority stability updates

    • Fixed an issue that can cause a restart of the postmaster process in Amazon Aurora Serverless v1.

    • Fixed an issue that can cause a restart of the Aurora Runtime process in Amazon Aurora Serverless v1.

    General enhancements

    • Fixed a memory leak in the Aurora Runtime that could lead to an out-of-memory condition.

    Aurora PostgreSQL 10.18.2, April 12, 2022

    General updates

    • Fixed a buffer cache bug that could cause brief periods of unavailability.

    Aurora PostgreSQL 10.18.1

    Security enhancements

    • Updated the PostGIS extension from version 3.1.4 to 3.1.5. This update contains a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Aurora PostgreSQL 10.18.0

    Critical stability updates

    • Fixed an issue where, in rare circumstances, a data cache of a read node may be inconsistent following a restart of that node.

    High priority stability updates

    • Fixed an issue where queries may become unresponsive due to I/O resource exhaustion triggered by prefetch.

    • Fixed an issue where Aurora may flag an issue following a major version update with the message: "PANIC: could not access status of next transaction id xxxxxxxx".

    Additional improvements and enhancements

    • Fixed an issue where read nodes restart due to a replication origin cache lookup failure.

    • Fixed an issue where read queries may time out on read nodes during the replay of lazy truncation triggered by vacuum on the write node.

    • Fixed an issue that causes Performance Insights to incorrectly set the backend type of a database connection.

    • Fixed an issue where the aurora_postgres_replica_status() function returned stale or lagging CPU stats.

    • Fixed an issue where, in rare cases, an Aurora Global Database secondary mirror cluster may restart due to a stall in the log apply process.

    • Removed support for the DES, 3DES, and RC4 cipher suites.

    • Updated PostGIS extension to version 3.1.4.

    • Added support for postgis_raster extension version 3.1.4.

    PostgreSQL 10.17, Aurora PostgreSQL 2.9 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.17. For more information about the improvements in PostgreSQL 10.17, see PostgreSQL release 10.17.

    Aurora PostgreSQL 10.17.5, December 30, 2022

    General enhancements

    • Amazon Aurora PostgreSQL version 10.17.5 was released with general enhancements.

    Aurora PostgreSQL 10.17.4, July 14, 2022

    Security enhancements

    • Backpatched the PostgreSQL community fix for CVE-2022-1552: Autovacuum, REINDEX, and others omit "security restricted operation". For more information, see CVE-2022-1552.

    High priority stability enhancements

    • Fixed an error handling issue related to out-of-memory conditions which could result in brief periods of unavailability.

    • Fixed an issue that could cause excess storage use due to files not being properly closed.

    • Fixed an issue that caused Performance Insights to show "Unknown wait event".

    Aurora PostgreSQL 2.9.2

    Security enhancements

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched postgis to PostGIS 2.4.7. This is a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    Aurora PostgreSQL 2.9.1

    Critical stability updates

    • Fixed an issue where, in rare circumstances, a data cache of a read node may be inconsistent following a restart of that node.

    High priority stability updates

    • Fixed an issue where queries may become unresponsive due to I/O resource exhaustion triggered by prefetch.

    • Fixed an issue where Aurora may flag an issue following a major version update with the message: "PANIC: could not access status of next transaction id xxxxxxxx".

    Additional improvements and enhancements

    • Fixed an issue where read nodes restart due to a replication origin cache lookup failure.

    • Fixed an issue where in rare cases, an Aurora Global Database secondary mirror cluster may restart due to a stall in the log apply process.

    • Fixed an issue that causes Performance Insights to incorrectly set the backend type of a database connection.

    • Fixed an issue where orphaned files caused failed translations in read codepaths during or after major version upgrade.

    • Fixed multiple issues in the Aurora storage daemon that could lead to brief periods of unavailability when specific network configurations are used.

    • Fixed an out-of-memory crash issue with Aurora storage daemon that leads to writer node restart. This also reduces the overall system memory consumption.

    Aurora PostgreSQL 2.9

    High priority stability updates

    1. Fixed an issue where creating a database from an existing template database with tablespace resulted in an error with the message ERROR: could not open file pg_tblspc/...: No such file or directory.

    2. Fixed an issue where, in rare cases, an Aurora replica may be unable to start when a large number of PostgreSQL subtransactions (i.e. SQL savepoints) have been used.

    3. Fixed an issue where, in rare circumstances, read results may be inconsistent for repeated read requests on replica nodes.

    Additional improvements and enhancements

    1. Upgraded OpenSSL to 1.1.1k.

    2. Reduced CPU usage and memory consumption of the WAL apply process on Aurora replicas for some workloads.

    3. Improved safety checks in the write path to detect incorrect writes to metadata.

    4. Improved security by removing 3DES and other older ciphers for SSL/TLS connections.

    5. Fixed an issue where a duplicate file entry can prevent the Aurora PostgreSQL engine from starting up.

    6. Fixed an issue that could cause temporary unavailability under heavy workloads.

    7. Added back ability to use a leading forward slash in the S3 path during S3 import.

    8. Updated the orafce extension to version 3.16.

    9. Updated the PostGIS extension to version 2.4.7.

    PostgreSQL 10.16, Aurora PostgreSQL 2.8 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.16. For more information about the improvements in PostgreSQL 10.16, see PostgreSQL release 10.16.

    Aurora PostgreSQL 2.8.1

    Security enhancements

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched postgis to PostGIS 2.4.4. This is a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched an input validation error in the log_fdw extension function parameters.

    Aurora PostgreSQL 2.8.0

    High priority stability updates

    1. Fixed a bug where in rare cases a reader had inconsistent results when it restarted while a transaction with more than 64 subtransactions was being processed.

    2. Backported fixes for the following PostgreSQL community security issues:

    Additional improvements and enhancements

    1. Fixed a bug where the database could not be started when there were many relations in memory-constrained environments.

    2. Fixed a bug in the apg_plan_mgmt extension that could cause brief periods of unavailability due to an internal buffer overflow.

    3. Fixed a bug on reader nodes that could cause brief periods of unavailability during WAL replay.

    4. Fixed a bug in the rds_activity_stream extension that caused an error during startup when attempting to log audit events.

    5. Fixed a bug that prevented minor version updates of an Aurora global database cluster.

    6. Fixed bugs in the aurora_replica_status function where rows were sometimes partially populated and some values such as Replay Latency, and CPU usage were always 0.

    7. Fixed a bug where the database engine would attempt to create shared memory segments larger than the instance total memory and fail repeatedly. For example, attempts to create 128 GiB shared buffers on a db.r5.large instance would fail. With this change, requests for total shared memory allocations larger than the instance memory allow setting the instance to incompatible parameters.

    8. Added logic to clean up unnecessary pg_wal temporary files on a database startup.

    9. Fixed a bug that reported ERROR: rds_activity_stream stack item 2 not found on top - cannot pop when attempting to create the rds_activity_stream extension.

    10. Fixed a bug that could cause the error failed to build any 3-way joins in a correlated IN subquery under an EXISTS subquery.

    11. Fixed a bug that could cause brief periods of unavailability due to running out of memory when creating the postgis extension with pgAudit enabled.

    12. Fixed a bug when using outbound logical replication to synchronize changes to another database that could fail with an error message like ERROR: could not map filenode "base/16395/228486645" to relation OID.

    13. Fixed a bug where the rds_ad role wasn't created after upgrading from a version of Aurora PostgreSQL that doesn't support Microsoft Active Directory authentication.

    14. Added btree page checks to detect tuple metadata inconsistency.

    15. Fixed a bug in asynchronous buffer reads that could cause brief periods of unavailability on reader nodes during WAL replay.

    PostgreSQL 10.14, Aurora PostgreSQL 2.7 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.14. For more information about the improvements in PostgreSQL 10.14, see PostgreSQL release 10.14.

    Aurora PostgreSQL 2.7.5

    Security enhancements

    • Modified the ip4r extension to mitigate a security issue during create extension. The issue was originally disclosed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched postgis to PostGIS 2.4.4. This is a PostGIS fix for the vulnerability addressed in core PostgreSQL by CVE-2020-14350. For more information, see CVE-2020-14350.

    • Backpatched an input validation error in the log_fdw extension function parameters.

    Aurora PostgreSQL 2.7.3

    High priority stability updates

    1. Provided a patch for PostgreSQL community security issues CVE-2021-32027, CVE-2021-32028 and CVE-2021-32029.

    Additional improvements and enhancements

    1. Fixed a bug in the aws_s3 extension to allow import of objects with leading forward slashes in the object identifier.

    2. Fixed a bug in the rds_activity_stream extension that caused an error during startup when attempting to log audit events.

    3. Fixed a bug that returned an ERROR when attempting to create the rds_activity_stream extension.

    4. Fixed a bug that could cause brief periods of unavailability due to running out of memory when creating the postgis extension with pgAudit enabled.

    5. Fixed multiple issues in the Aurora storage daemon that could lead to brief periods of unavailability when specific network configurations are used.

    Aurora PostgreSQL 2.7.2

    High priority stability updates

    1. Fixed a bug where a reader node might render an extra or missing row if the reader restarted while the writer node is processing a long transaction with more than 64 subtransactions.

    Additional improvements and enhancements

    1. Fixed a bug that could lead to intermittent unavailability due to the rotation of network encryption keys.

    2. Fixed a bug where a large S3 import with thousands of clients can cause one or more of the import clients to stop responding.

    Aurora PostgreSQL 2.7.1

    Critical stability updates

    1. Fixed a bug that caused a read replica to unsuccessfully restart repeatedly in rare cases.

    2. Fixed a bug where a cluster became unavailable when attempting to create more than 16 read replicas or Aurora global database secondary AWS Regions. The cluster became available again when the new read replica or secondary AWS Region was removed.

    Additional improvements and enhancements

    1. Fixed a bug that when under heavy load, snapshot import, COPY import, or S3 import stopped responding in rare cases.

    2. Fixed a bug where a read replica might not join the cluster when the writer was very busy with a write-intensive workload.

    3. Fixed a bug that caused a cluster to take several minutes to restart if a logical replication stream was terminated while handling many complex transactions.

    4. Disallowed the use of both IAM and Kerberos authentication for the same user.

    Aurora PostgreSQL 2.7.0

    Critical stability updates

    • None

    High priority stability updates

    1. Backported fixes for the following PostgreSQL community security issues:

    2. Fixed a bug in Aurora PostgreSQL replication that could result in the error message ERROR: MultiXactId nnnn has not been created yet -- apparent wraparound.

    3. Fixed a bug where in some cases, DB clusters that have logical replication enabled did not remove truncated WAL segment files from storage. This resulted in volume size growth.

    4. Fixed a bug in the pg_stat_statements extension that caused excessive CPU consumption.

    Additional improvements and enhancements

    1. Improved the asynchronous mode performance of database activity streams.

    2. Aurora Serverless v1 for PostgreSQL now supports query execution on all connections during a scale event.

    3. Reduced the delay when publishing to CloudWatch the rpo_lag_in_msec metric for Aurora global database clusters.

    4. Fixed a bug in Serverless clusters where transaction processing was unnecessarily suspended for long periods when creating a scale point.

    5. Fixed a bug in Aurora Serverless v1 for PostgreSQL where a leaked lock resulted in a prolonged scale event.

    6. Fixed a bug in Aurora Serverless v1 for PostgreSQL where connections being migrated during a scale event was disconnected with the following message: ERROR: could not open relation with OID ...

    7. Aurora PostgreSQL no longer falls behind on a read node when the backend is blocked writing to the database client.

    8. Fixed a bug that in rare cases caused a brief period of unavailability on a read replica when the storage volume grew.

    9. Fixed a bug when creating a database that could return the following error: ERROR: could not create directory on local disk

    10. Fixed a bug where in some cases replaying XLOG_BTREE_REUSE_PAGE records on Aurora reader instances caused unnecessary replay lag.

    11. Fixed a bug in the GiST index that could result in an out of memory condition after promoting an Aurora read replica.

    12. Fixed a bug where the aurora_replica_status function showed truncated server identifiers.

    13. Fixed an S3 import bug that reported ERROR: HTTP 403. Permission denied when importing data from a file inside an S3 subfolder.

    14. Fixed a bug in the aws_s3 extension for pre-signed URL handling that could result in the error message S3 bucket names with a period (.) are not supported.

    15. Fixed a bug in the aws_s3 extension where an import might be blocked indefinitely if an exclusive lock was taken on the relation prior to beginning the operation.

    16. Fixed a bug related to replication when Aurora PostgreSQL is acting as a physical replica of an RDS for PostgreSQL instance that uses GiST indexes. In rare cases, this bug caused a brief period of unavailability after promoting the Aurora cluster.

    17. Fixed a bug in database activity streams where customers were not notified of the end of an outage.

    PostgreSQL 10.13, Aurora PostgreSQL 2.6 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.13. For more information about the improvements in PostgreSQL 10.13, see PostgreSQL release 10.13.

    Aurora PostgreSQL release 2.6.2

    Critical stability updates

    1. None

    High priority stability updates

    1. Fixed a bug in Aurora PostgreSQL replication that could result in the error message ERROR: MultiXactId nnnn has not been created yet -- apparent wraparound.

    2. Fixed a bug where in some cases, DB clusters that have logical replication enabled did not remove truncated WAL segment files from storage. This resulted in volume size growth.

    3. Fixed an issue with creating a global database cluster in a secondary region.

    4. Backported fixes for the following PostgreSQL community security issues:

    5. Fixed a bug in the pg_stat_statements extension that caused excessive CPU consumption.

    Additional improvements and enhancements

    1. Aurora PostgreSQL no longer falls behind on a read node when the backend is blocked writing to the database client.

    2. Reduced the delay when publishing to CloudWatch the rpo_lag_in_msec metric for Aurora global database clusters.

    3. Fixed a bug where a DROP DATABASE statement didn't remove any relation files.

    4. Fixed a bug where in some cases replaying XLOG_BTREE_REUSE_PAGE records on Aurora reader instances caused unnecessary replay lag.

    5. Fixed a small memory leak in a b-tree index that could lead to an out of memory condition.

    6. Fixed a bug in the aurora_replica_status() function where the server_id field was sometimes truncated.

    7. Fixed a bug where a log record was incorrectly processed causing the Aurora replica to crash.

    8. Fixed an S3 import bug that reported ERROR: HTTP 403. Permission denied when importing data from a file inside an S3 subfolder.

    9. Improved performance of the asynchronous mode for database activity streams.

    10. Fixed a bug in the aws_s3 extension that could result in the error message S3 bucket names with a period (.) are not supported.

    11. Fixed a race condition that caused valid imports to intermittently fail.

    12. Fixed a bug related to replication when Aurora PostgreSQL is acting as a physical replica of an RDS for PostgreSQL instance that uses GiST indexes. In rare cases, this bug caused a brief period of unavailability after promoting the Aurora DB cluster.

    13. Fixed a bug in the aws_s3 extension where an import may be blocked indefinitely if an exclusive lock was taken on the relation prior to beginning the operation.

    Aurora PostgreSQL 2.6.1

    You can find the following improvements in this release.

    Critical stability enhancements

    1. Fixed a bug that appears when the NOT EXISTS operator incorrectly returns TRUE, which can only happen when the following unusual set of circumstances occurs:

      • A query is using the NOT EXISTS operator.

      • The column or columns being evaluated against the outer query in the NOT EXISTS subquery contain a NULL value.

      • There isn't a another predicate in the subquery that removes the need for the evaluation of the NULL values.

      • The filter used in the subquery does not use an index seek for its execution.

      • The operator isn't converted to a join by the query optimizer.

    Aurora PostgreSQL 2.6.0

    You can find the following improvements in this release.

    New features

    1. Added support for the RDKit extension version 3.8.

      The RDKit extension provides modeling functions for cheminformatics. Cheminformatics is storing, indexing, searching, retrieving, and applying information about chemical compounds. For example, with the RDKit extension you can construct models of molecules, search for molecular structures, and read or create molecules in various notations. You can also perform research on data loaded from the ChEMBL website or a SMILES file. The Simplified Molecular Input Line Entry System (SMILES) is a typographical notation for representing molecules and reactions. For more information, see The RDKit database cartridge in the RDKit documentation.

    2. Added support for the pglogical extension version 2.2.2.

      The pglogical extension is a logical streaming replication system that provides additional features beyond what's available in PostgreSQL native logical replication. Features include conflict handling, row filtering, DDL/sequence replication and delayed apply. You can use the pglogical extension to set up replication between Aurora PostgreSQL clusters, between RDS for PostgreSQL and Aurora PostgreSQL, and with PostgreSQL databases running outside of RDS.

    3. Aurora dynamically resizes your cluster storage space. With dynamic resizing, the storage space for your Aurora DB cluster automatically decreases when you remove data from the DB cluster. For more information, see Storage scaling in the Amazon Aurora User Guide.

      Note

      The dynamic resizing feature is being deployed in phases to the AWS Regions where Aurora is available. Depending on the Region where your cluster is, this feature might not be available yet. For more information, see the What's New announcement.

    Critical stability updates

    1. Fixed a bug related to heap page extend that in rare cases resulted in longer recovery time and impacted availability.

    High priority stability updates

    1. Fixed a bug when upgrading Aurora Global Database clusters from 10.11.

    2. Fixed a bug in Aurora Global Database that could cause delays in upgrading the database engine in a secondary AWS Region. For more information, see Using Amazon Aurora global databases in the Amazon Aurora User Guide.

    3. Fixed a bug that in rare cases caused delays in upgrading a database to engine version 10.13.

    Additional improvements and enhancements

    1. Fixed a bug where the Aurora replica crashed when workloads with heavy subtransactions are made on the writer instance.

    2. Fixed a bug where the writer instance crashed due to a memory leak and the depletion of memory used to track active transactions.

    3. Fixed a bug that lead to a crash due to improper initialization when there is no free memory available during PostgreSQL backend startup.

    4. Fixed a bug where an Aurora PostgreSQL Serverless DB cluster might return the following error after a scaling event: ERROR: prepared statement "S_6" already exists.

    5. Fixed an out-of-memory problem when issuing the CREATE EXTENSION command with PostGIS when Database Activity Streams is enabled.

    6. Fixed a bug where a SELECT query might incorrectly return the error Attempting to read past EOF of relation rrrr. blockno=bbb nblocks=nnn.

    7. Fixed a bug where the database might be unavailable briefly due to error handling in database storage growth.

    8. Fixed a bug in Aurora PostgreSQL Serverless where queries that executed on previously idle connections got delayed until the scale operation completed.

    9. Fixed a bug where an Aurora PostgreSQL DB cluster with Database Activity Streams enabled might report the beginning of a potential loss window for activity records, but does not report the restoration of connectivity.

    PostgreSQL 10.12, Aurora PostgreSQL 2.5 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.12. For more information about the improvements in PostgreSQL 10.12, see PostgreSQL release 10.12.

    Aurora PostgreSQL 2.5.7

    You can find the following improvements in this release.

    Critical stability updates

    • None

    High priority stability updates

    1. Backported fixes for the following PostgreSQL community security issues:

    Additional improvements and enhancements

    • None

    Aurora PostgreSQL 2.5.6

    You can find the following improvements in this release.

    Critical stability updates

    • None

    High priority stability updates

    1. Fixed a bug in Aurora PostgreSQL replication that might result in the error message, ERROR: MultiXactId nnnn has not been created yet -- apparent wraparound.

    Additional improvements and enhancements

    1. Fixed a bug that in rare cases caused brief read replica unavailability when storage volume grew.

    2. Aurora PostgreSQL Serverless now supports execution of queries on all connections during a scale event.

    3. Fixed a bug in Aurora PostgreSQL Serverless where a leaked lock resulted in a prolonged scale event.

    4. Fixed a bug where the aurora_replica_status function showed truncated server identifiers.

    5. Fixed a bug in Aurora PostgreSQL Serverless where connections being migrated during a scale event disconnected with the message: "ERROR: could not open relation with OID ....

    6. Fixed a bug in a GiST index that might result in an out-of-memory condition after promoting an Aurora Read Replica.

    7. Improved performance for Database Activity Streams.

    8. Fixed a bug in Database Activity Streams where customers were not notified when an outage ended.

    9. Fixed a bug in the aws_s3 extension for pre-signed URL handling that could have resulted in the error message S3 bucket names with a period (.) are not supported.

    10. Fixed a bug in the aws_s3 extension where incorrect error handling could lead to failures during the import process.

    11. Fixed a bug in the aws_s3 extension where an import may be blocked indefinitely if an exclusive lock was taken on the relation prior to beginning the operation.

    Aurora PostgreSQL 2.5.4

    You can find the following improvements in this release.

    Critical stability enhancements

    1. Fixed a bug that appears when the NOT EXISTS operator incorrectly returns TRUE, which can only happen when the following unusual set of circumstances occurs:

      • A query is using the NOT EXISTS operator.

      • The column or columns being evaluated against the outer query in the NOT EXISTS subquery contain a NULL value.

      • There isn't a another predicate in the subquery that removes the need for the evaluation of the NULL values.

      • The filter used in the subquery does not use an index seek for its execution.

      • The operator isn't converted to a join by the query optimizer.

    Aurora PostgreSQL 2.5.3

    You can find the following improvements in this release.

    Critical stability enhancements

    • None

    High priority stability enhancements

    • None

    Additional improvements and enhancements

    1. Fixed a bug in Aurora PostgreSQL Serverless where queries that ran on previously idle connections got delayed until the scale operation completed.

    2. Fixed a bug that might cause brief unavailability for heavy subtransaction workloads when multiple reader instances restart or rejoin the cluster.

    3. Fixed a bug in Aurora PostgreSQL Global Database where upgrading a secondary cluster might result in failure due to incorrect checksum versioning. This might have required re-creating the secondary clusters.

    Aurora PostgreSQL 2.5.2

    You can find the following improvements in this release.

    Critical stability updates

    1. Fixed a bug related to heap page extend that in rare cases resulted in longer recovery time and impacted availability.

    High priority stability updates

    1. Fixed a bug in Aurora Global Database that could cause delays in upgrading the database engine in a secondary region. For more information, see Using Amazon Aurora global databases in the Amazon Aurora User Guide.

    2. Fixed a bug that in rare cases caused delays in upgrading a database to engine version 10.12.

    Additional improvements and enhancements

    1. Fixed a bug where the database might be unavailable briefly due to error handling in database storage growth.

    2. Fixed a bug where a SELECT query might incorrectly return the error, Attempting to read past EOF of relation rrrr. blockno=bbb nblocks=nnn.

    3. Fixed a bug where an Aurora PostgreSQL Serverless DB cluster might return the following error after a scaling event: ERROR: prepared statement "S_6" already exists.

    Aurora PostgreSQL 2.5.1

    New features

    1. Added support for Amazon Aurora PostgreSQL Global Database. For more information, see Using Amazon Aurora global databases in the Amazon Aurora User Guide.

    2. Added the ability to configure the recovery point objective (RPO) of a global database for Aurora PostgreSQL. For more information, see Managing RPOs for Aurora PostgreSQL–based global databases in the Amazon Aurora User Guide.

    You can find the following improvements in this release.

    Critical stability updates

    None.

    High priority stability updates

    1. Improved performance and availability of read instances when applying DROP TABLE and TRUNCATE TABLE operations.

    2. Fixed a small but continuous memory leak in a diagnostic module that could lead to an out-of-memory condition on smaller DB instance types.

    3. Fixed a bug in the PostGIS extension which could lead to a database restart. This has been reported to the PostGIS community as https://trac.osgeo.org/postgis/ticket/4646.

    4. Fixed a bug where read requests might stop responding due to incorrect error handling in the storage engine.

    5. Fixed a bug that fails for some queries and results in the message ERROR: found xmin xxxxxx from before relfrozenxid yyyyyyy. This could occur following the promotion of a read instance to a write instance.

    6. Fixed a bug where an Aurora serverless DB cluster might crash while rolling back a scale attempt.

    Additional improvements and enhancements

    1. Improved performance for queries that read many rows from storage.

    2. Improved performance and availability of reader DB instances during heavy read workload.

    3. Enabled correlated IN and NOT IN subqueries to be transformed to joins when possible.

    4. Improved read performance of the pg_prewarm extension.

    5. Fixed a bug where an Aurora serverless DB cluster might report the message ERROR: incorrect binary data format in bind parameter ... following a scale event.

    6. Fixed a bug where a serverless DB cluster might report the message ERROR: insufficient data left in message following a scale event.

    7. Fixed a bug where an Aurora serverless DB cluster may experience prolonged or failed scale attempts.

    8. Fixed a bug that resulted in the message ERROR: could not create file "base/xxxxxx/yyyyyyy" as a previous version still exists on disk: Success. Please contact AWS customer support. This can occur during object creation after PostgreSQL's 32-bit object identifier has wrapped around.

    9. Fixed a bug where the write-ahead-log (WAL) segment files for PostgreSQL logical replication were not deleted when changing the wal_level value from logical to replica.

    10. Fixed a bug in the pg_hint_plan extension where a multi-statement query could lead to a crash when enable_hint_table is enabled. This is tracked in the PostgreSQL community as https://github.com/ossc-db/pg_hint_plan/issues/25.

    11. Fixed a bug where JDBC clients might report the message java.io.IOException: Unexpected packet type: 75 following a scale event in an Aurora serverless DB cluster.

    12. Fixed a bug in PostgreSQL logical replication that resulted in the message ERROR: snapshot reference is not owned by resource owner TopTransaction.

    13. Changed the following extensions:

      • Updated orafce to version 3.8

    PostgreSQL 10.11, Aurora PostgreSQL 2.4 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.11. For more information about the improvements in PostgreSQL 10.11, see PostgreSQL release 10.11.

    This release contains multiple critical stability updates. Amazon highly recommends upgrading your Aurora PostgreSQL clusters that use older PostgreSQL 10 engines to this release.

    Aurora PostgreSQL 2.4.4

    You can find the following improvements in this release.

    Critical stability updates

    • None

    High priority stability updates

    1. Backported fixes for the following PostgreSQL community security issues:

    Additional improvements and enhancements

    • None

    Aurora PostgreSQL 2.4.3

    New features

    1. Aurora PostgreSQL now supports the PostgreSQL vacuum_truncate storage parameter to manage vacuum truncation for specific tables. Set this storage parameter to false for a table to prevent the VACUUM SQL command from truncating the table's trailing empty pages.

    Critical stability updates

    • None

    High priority stability updates

    1. Fixed a bug where reads from storage might stop responding due to incorrect error handling.

    Additional improvements and enhancements

    • None

    Aurora PostgreSQL 2.4.2

    You can find the following improvements in this release.

    Critical stability updates

    1. Fixed a bug in which a reader DB instance might temporarily use stale data. This could lead to wrong results such as too few or too many rows. This error is not persisted on storage, and will clear when the database page containing the row has been evicted from cache. This can happen when the primary DB instance enters a transaction snapshot overflow due to having more than 64 subtransactions in a single transaction. Applications susceptible to this bug include those that use SQL savepoints or PostgreSQL exception handlers with more than 64 subtransactions in the top transaction.

    High priority stability updates

    1. Fixed a bug that may cause a reader DB instance to crash causing unavailability while attempting to the join the DB cluster. This can happen in some cases when the primary DB instance has a transaction snapshot overflow due to a high number of subtransactions. In this situation the reader DB instance will be unable to join until the snapshot overflow has cleared.

    Additional improvements and enhancements

    1. Fixed a bug that prevented Performance Insights from determining the query ID of a running statement.

    Aurora PostgreSQL 2.4.1

    You can find the following improvements in this release.

    Critical stability updates

    1. Fixed a bug in which the DB instance might be briefly unavailable due to the self-healing function of the underlying storage.

    High priority stability updates

    1. Fixed a bug that might cause the database engine to crash causing unavailability. This occurred if a newly established database connection encountered a resource exhaustion-related error during initialization after successful authentication.

    Additional improvements and enhancements

    1. Provided a fix for the pg_hint_plan extension that could lead the database engine to crash causing unavailability. The open source issue can be tracked at https://github.com/ossc-db/pg_hint_plan/pull/45.

    2. Fixed a bug where SQL of the form ALTER FUNCTION ... OWNER TO ... incorrectly reported ERROR: improper qualified name (too many dotted names).

    3. Improved the performance of GIN index vacuum via prefetching.

    4. Fixed a bug in open source PostgreSQL that could lead to a database engine crash causing unavailability. This occurred during parallel B-Tree index scans. This issue has been reported to the PostgreSQL community.

    5. Improved the performance of in-memory B-Tree index scans.

    6. Additional general improvements to the stability and availability of Aurora PostgreSQL.

    Aurora PostgreSQL 2.4.0

    You can find the following new features and improvements in this engine version.

    New features

    1. Support for exporting data to Amazon S3. For more information, see Exporting data from an Aurora PostgreSQL DB cluster to Amazon S3 in the Amazon Aurora User Guide.

    2. Support for Amazon Aurora Machine Learning. For more information, see Using machine learning (ML) with Aurora PostgreSQL in the Amazon Aurora User Guide.

    3. SQL processing enhancements include:

      • Optimizations for NOT IN with the apg_enable_not_in_transform parameter.

      • Semi-join filter pushdown enhancements for hash joins with the apg_enable_semijoin_push_down parameter.

      • Optimizations for redundant inner join removal with the apg_enable_remove_redundant_inner_joins parameter.

      • Improved ANSI compatibility options with the ansi_constraint_trigger_ordering, ansi_force_foreign_key_checks and ansi_qualified_update_set_target parameters.

      For more information, see Amazon Aurora PostgreSQL parameters in the Amazon Aurora User Guide.

    4. New and updated PostgreSQL extensions include:

    Critical stability updates

    1. Fixed a bug related to creating B-tree indexes on temporary tables that in rare cases may result in longer recovery time, and impact availability.

    2. Fixed a bug related to replication when Aurora PostgreSQL is acting as a physical replica of an RDS for PostgreSQL instance. In rare cases, this bug causes a log write failure that may result in longer recovery time, and impact availability.

    3. Fixed a bug related to handling of reads with high I/O latency that in rare cases may result in longer recovery time, and impact availability.

    High priority stability updates

    1. Fixed a bug related to logical replication in which wal segments are not properly removed from storage. This can result in storage bloat. To monitor this, view the TransactionLogDiskUsage parameter.

    2. Fixed multiple bugs, which cause Aurora to crash during prefetch operations on Btree indexes.

    3. Fixed a bug in which an Aurora restart may timeout when logical replication is used.

    4. Enhanced the validation checks performed on data blocks in the buffer cache. This improves Aurora's detection of inconsistency.

    Additional improvements and enhancements

    1. The query plan management extension apg_plan_mgmt has an improved algorithm for managing plan generation for highly partitioned tables.

    2. Reduced startup time on instances with large caches via improvements in the buffer cache recovery algorithm.

    3. Improved the performance of the read-node-apply process under high transaction rate workloads by using changes to PostgreSQL LWLock prioritization. These changes prevent starvation of the read-node-apply process while the PostgreSQL ProcArray is under heavy contention.

    4. Improved handling of batch reads during vacuum, table scans, and index scans. This results in greater throughput and lower CPU consumption.

    5. Fixed a bug in which a read node may crash during the replay of a PostgreSQL SLRU-truncate operation.

    6. Fixed a bug where in rare cases, database writes may stall following an error returned by one of the six copies of an Aurora log record.

    7. Fixed a bug related to logical replication where an individual transaction larger than 1 GB in size may result in an engine crash.

    8. Fixed a memory leak on read nodes when cluster cache management is enabled.

    9. Fixed a bug in which importing an RDS for PostgreSQL snapshot might stop responding if the source snapshot contains a large number of unlogged relations.

    10. Fixed a bug in which the Aurora storage daemon may crash under heavy I/O load.

    11. Fixed a bug related to hot_standby_feedback for read nodes in which the read node may report the wrong transaction id epoch to the write node. This can cause the write node to ignore the hot_standby_feedback and invalidate snapshots on the read node.

    12. Fixed a bug in which storage errors that occur during CREATE DATABASE statements are not properly handled. The bug left the resulting database inaccessible. The correct behavior is to fail the database creation and return the appropriate error to the user.

    13. Improved handling of PostgreSQL snapshot overflow when a read node attempts to connect to a write node. Prior to this change, if the write node was in a snapshot overflow state, the read node was unable to join. A message appeared in the PostgreSQL log file in the form DEBUG: recovery snapshot waiting for non-overflowed snapshot or until oldest active xid on standby is at least xxxxxxx (now yyyyyyy). A snapshot overflow occurs when an individual transaction has created over 64 subtransactions.

    14. Fixed a bug related to common table expressions in which an error is incorrectly raised when a NOT IN class exists in a CTE. The error is CTE with NOT IN fails with ERROR: could not find CTE CTE-Name.

    15. Fixed a bug related to an incorrect last_error_timestamp value in the aurora_replica_status table.

    16. Fixed a bug to avoid populating shared buffers with blocks belonging to temporary objects. These blocks correctly reside in PostgreSQL backend local buffers.

    17. Improved the performance of vacuum cleanup on GIN indexes.

    18. Fixed a bug where in rare cases Aurora may exhibit 100% CPU utilization while acting as a replica of an RDS for PostgreSQL instance even when the replication stream is idle.

    19. Backported a change from PostgreSQL 11 which improves the cleanup of orphaned temporary tables. Without this change, it is possible that in rare cases orphaned temporary tables can lead to transaction ID wraparound. For more information, see this PostgreSQL community commit.

    20. Fixed a bug where a Writer instance may accept replication registration requests from Reader instances while having an uninitialized startup process.

    21. Changed the following extensions:

      • Updated pg_hint_plan to version 1.3.3.

      • Added plprofiler version 4.1.

    PostgreSQL 10.7, Aurora PostgreSQL 2.3 (Deprecated)

    Note

    The PostgreSQL engine version 10.7 with the Aurora PostgreSQL 2.3 is no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.7. For more information about the improvements in PostgreSQL 10.7, see PostgreSQL release 10.7.

    Aurora PostgreSQL 2.3.5

    You can find the following improvements in this release.

    Improvements

    1. Fixed a bug that could cause DB instance restarts.

    2. Fixed a bug that could cause a crash when the PostgreSQL backend exits while using logical replication.

    3. Fixed a bug that could cause a restart when reads occurred during failovers.

    4. Fixed a bug with the wal2json module for logical replication.

    5. Fixed a bug that could result in inconsistent metadata.

    Aurora PostgreSQL 2.3.3

    You can find the following improvements in this release.

    Improvements

    1. Provided a backport fix for the PostgreSQL community security issue CVE-2019-10130.

    2. Provided a backport fix for the PostgreSQL community security issue CVE-2019-10164.

    3. Fixed a bug in which data activity streaming could consume excessive CPU time.

    4. Fixed a bug in which parallel threads scanning a B-tree index might stop responding following a disk read.

    5. Fixed a bug where use of the not in predicate against a common table expression (CTE) could return the following error: "ERROR: bad levelsup for CTE".

    6. Fixed a bug in which the read node replay process might stop responding while applying a modification to a generalized search tree (GiST) index.

    7. Fixed a bug in which visibility map pages could contain incorrect freeze bits following a failover to a read node.

    8. Optimized log traffic between the write node and read nodes during index maintenance.

    9. Fixed a bug in which queries on read nodes may crash while performing a B-tree index scan.

    10. Fixed a bug in which a query that has been optimized for redundant inner join removal could crash.

    11. The function aurora_stat_memctx_usage now reports the number of instances of a given context name.

    12. Fixed a bug in which the function aurora_stat_memctx_usage reported incorrect results.

    13. Fixed a bug in which the read node replay process could wait to stop conflicting queries beyond the configured max_standby_streaming_delay value.

    14. Additional information is now logged on read nodes when active connections conflict with the relay process.

    15. Provided a backport fix for the PostgreSQL community bug #15677, where a crash could occur while deleting from a partitioned table.

    Aurora PostgreSQL 2.3.1

    You can find the following improvements in this release.

    Improvements

    1. Fixed multiple bugs related to I/O prefetching that caused engine crashes.

    Aurora PostgreSQL 2.3.0

    You can find the following improvements in this release.

    New features

    1. Aurora PostgreSQL now performs I/O prefetching while scanning B-tree indexes. This results in significantly improved performance for B-tree scans over uncached data.

    Improvements

    1. Fixed a bug in which read nodes may fail with the error "too many LWLocks taken".

    2. Addressed numerous issues that caused read nodes to fail to startup while the cluster is under heavy write workload.

    3. Fixed a bug in which usage of the aurora_stat_memctx_usage() function could lead to a crash.

    4. Improved the cache replacement strategy used by table scans to minimize thrashing of the buffer cache.

    PostgreSQL 10.6, Aurora PostgreSQL 2.2 (Deprecated)

    Note

    The PostgreSQL engine version 10.6 with the Aurora PostgreSQL 2.2 is no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.6. For more information about the improvements in PostgreSQL 10.6, see PostgreSQL release 10.6.

    Aurora PostgreSQL 2.2.1

    You can find the following improvements in this release.

    Improvements

    1. Improved stability of logical replication.

    2. Fixed a bug which could cause an error running queries. The message reported was of the form "CLOG segment 123 does not exist: No such file or directory".

    3. Increased the supported size of IAM passwords to 8KB.

    4. Improved consistency of performance under high throughput write workloads.

    5. Fixed a bug which could cause a read replica to crash during a restart.

    6. Fixed a bug which could cause an error running queries. The message reported was of the form "SQL ERROR: Attempting to read past EOF of relation".

    7. Fixed a bug which could cause an increase in memory usage after a restart.

    8. Fixed a bug which could cause a transaction with a large number of subtransactions to fail.

    9. Merged a patch from community PostgreSQL which addresses potential failures when using GIN indexes. For more information, see https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=f9e66f2fbbb49a493045c8d8086a9b15d95b8f18.

    10. Fixed a bug which could cause a snapshot import from RDS for PostgreSQL to fail.

    Aurora PostgreSQL 2.2.0

    You can find the following improvements in this release.

    New features

    1. Added the restricted password management feature. Restricted password management enables you to restrict who can manage user passwords and password expiration changes by using the parameter rds.restrict_password_commands and the role rds_password. For more information, see Restricting password management in the Amazon Aurora User Guide.

    PostgreSQL 10.5, Aurora PostgreSQL 2.1 (Deprecated)

    Note

    The PostgreSQL engine version 10.5 with the Aurora PostgreSQL 2.1 is no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.5. For more information about the improvements in PostgreSQL 10.5, see PostgreSQL release 10.5.

    Aurora PostgreSQL 2.1.1

    You can find the following improvements in this release.

    Improvements

    1. Fixed a bug which could cause an error running queries. The message reported was of the form "CLOG segment 123 does not exist: No such file or directory".

    2. Increased the supported size of IAM passwords to 8KB.

    3. Improved consistency of performance under high throughput write workloads.

    4. Fixed a bug which could cause a read replica to crash during a restart.

    5. Fixed a bug which could cause an error running queries. The message reported was of the form "SQL ERROR: Attempting to read past EOF of relation".

    6. Fixed a bug which could cause an increase in memory usage after a restart.

    7. Fixed a bug which could cause a transaction with a large number of subtransactions to fail.

    8. Merged a patch from community PostgreSQL which addresses potential failures when using GIN indexes. For more information, see https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=f9e66f2fbbb49a493045c8d8086a9b15d95b8f18.

    9. Fixed a bug which could cause a snapshot import from RDS for PostgreSQL to fail.

    Aurora PostgreSQL 2.1.0

    You can find the following improvements in this release.

    New features

    1. General availability of Aurora Query Plan Management, which enables customers to track and manage any or all query plans used by their applications, to control query optimizer plan selection, and to ensure high and stable applicationperformance. For more information, see Managing query execution plans for Aurora PostgreSQL in the Amazon Aurora User Guide.

    2. Updated the libprotobuf extension to version 1.3.0. This is used by the PostGIS extension.

    3. Updated the pg_similarity extension to version 1.0.

    4. Updated the log_fdw extension to version 1.1.

    5. Updated the pg_hint_plan extension to version 1.3.1.

    Improvements

    1. Network traffic between the writer and reader nodes is now compressed to reduce network utilization. This reduces the chance of read node unavailability due to network saturation.

    2. Implemented a high performance, scalable subsystem for PostgreSQL subtransactions. This improves the performance of applications which make extensive use of savepoints and PL/pgSQL exception handlers.

    3. The rds_superuser role can now set the following parameters on a per-session, database, or role level:

      • log_duration

      • log_error_verbosity

      • log_executor_stats

      • log_lock_waits

      • log_min_duration_statement

      • log_min_error_statement

      • log_min_messages

      • log_parser_stats

      • log_planner_stats

      • log_replication_commands

      • log_statement_stats

      • log_temp_files

    4. Fixed a bug in which the SQL command "ALTER FUNCTION ... OWNER TO ..." might fail with error "improper qualified name (too many dotted names)".

    5. Fixed a bug in which a crash could occur while committing a transaction with more than two million subtransactions.

    6. Fixed a bug in community PostgreSQL code related to GIN indexes which can cause the Aurora Storage volume to become unavailable.

    7. Fixed a bug in which an Aurora PostgreSQL replica of an RDS for PostgreSQL instance might fail to start, reporting error: "PANIC: could not locate a valid checkpoint record".

    8. Fixed a bug in which passing an invalid parameter to the aurora_stat_backend_waits function could cause a crash.

    Known issues

    1. The pageinspect extension is not supported in Aurora PostgreSQL.

    PostgreSQL 10.4, Aurora PostgreSQL 2.0 (Deprecated)

    Note

    The PostgreSQL engine version 10.4 with the Aurora PostgreSQL 2.0 is no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 10.4. For more information about the improvements in PostgreSQL 10.4, see PostgreSQL release 10.4.

    Aurora PostgreSQL 2.0.1

    You can find the following improvements in this release.

    Improvements

    1. Fixed a bug which could cause an error running queries. The message reported was of the form "CLOG segment 123 does not exist: No such file or directory".

    2. Increased the supported size of IAM passwords to 8KB.

    3. Improved consistency of performance under high throughput write workloads.

    4. Fixed a bug which could cause a read replica to crash during a restart.

    5. Fixed a bug which could cause an error running queries. The message reported was of the form "SQL ERROR: Attempting to read past EOF of relation".

    6. Fixed a bug which could cause an increase in memory usage after a restart.

    7. Fixed a bug which could cause a transaction with a large number of subtransactions to fail.

    8. Merged a patch from community PostgreSQL which addresses potential failures when using GIN indexes. For more information, see https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=f9e66f2fbbb49a493045c8d8086a9b15d95b8f18.

    9. Fixed a bug which could cause a snapshot import from RDS for PostgreSQL to fail.

    Aurora PostgreSQL 2.0.0

    You can find the following improvements in this release.

    Improvements

    1. This release contains all fixes, features, and improvements present in PostgreSQL 9.6.9, Aurora PostgreSQL 1.3 (Deprecated).

    2. The temporary file size limitation is user-configurable. You require the rds_superuser role to modify the temp_file_limit parameter.

    3. Upgraded the GDAL library, which is used by the PostGIS extension.

    4. Updated the ip4r extension to version 2.1.1.

    5. Updated the pg_repack extension to version 1.4.3.

    6. Updated the plv8 extension to version 2.1.2.

    7. Parallel queries – When you create a new Aurora PostgreSQL version 2.0 instance, parallel queries are enabled for the default.postgres10 parameter group. The parameter max_parallel_workers_per_gather is set to 2 by default, but you can modify it to support your specific workload requirements.

    8. Fixed a bug in which read nodes may crash following a specific type of free space change from the write node.

    PostgreSQL 9.6 versions (Deprecated)

    PostgreSQL 9.6.22, Aurora PostgreSQL 1.11 (Deprecated)

    Note

    The PostgreSQL engine version 9.6.22 and Aurora PostgreSQL 1.10 are no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 9.6.22. For more information about the improvements in PostgreSQL 9.6.22, see PostgreSQL release 9.6.22.

    Aurora PostgreSQL 1.11.1

    High priority stability updates

    • Fixed an issue where queries may become unresponsive due to I/O resource exhaustion triggered by prefetch.

    Additional improvements and stability updates

    • Fixed multiple issues in the Aurora storage daemon that could lead to brief periods of unavailability when specific network configurations are used.

    Aurora PostgreSQL 1.11

    High priority stability enhancements

    1. Fixed an issue where creating a database from an existing template database with tablespace resulted in an error with the message ERROR: could not open file pg_tblspc/...: No such file or directory.

    2. Fixed an issue where, in rare cases, an Aurora replica may be unable to start when a large number of PostgreSQL subtransactions (i.e. SQL savepoints) have been used.

    3. Fixed an issue where, in rare circumstances, read results may be inconsistent for repeated read requests on replica nodes.

    Additional improvements and enhancements

    1. Upgraded OpenSSL to 1.1.1k.

    2. Reduced CPU usage and memory consumption of the WAL apply process on Aurora replicas for some workloads.

    3. Improve safety checks in the write path to detect incorrect writes to metadata.

    4. Fixed an issue where a duplicate file entry can prevent the Aurora PostgreSQL engine from starting up.

    5. Fixed an issue that could cause temporary unavailability under heavy workloads.

    6. Added back ability to use a leading forward slash in the S3 path during S3 import.

    7. Updated the PostGIS extension to version 2.4.7.

    8. Updated the orafce extension to version 3.16.

    PostgreSQL 9.6.21, Aurora PostgreSQL 1.10 (Deprecated)

    Note

    The PostgreSQL engine version 9.6.21 and Aurora PostgreSQL 1.10 are no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 9.6.21. For more information about the improvements in PostgreSQL 9.6.21, see PostgreSQL release 9.6.21.

    Aurora PostgreSQL 1.10.0

    High priority stability enhancements

    1. Fixed a bug where in rare cases a reader had inconsistent results when it restarted while a transaction with more than 64 subtransactions was being processed.

    2. Backported fixes for the following PostgreSQL community security issues:

    Additional improvements and enhancements

    1. Fixed a bug where the database could not be started when there were many relations in memory-constrained environments.

    2. Fixed a bug in the apg_plan_mgmt extension that could cause brief periods of unavailability due to an internal buffer overflow.

    3. Fixed a bug where the database engine would attempt to create shared memory segments larger than the instance total memory and fail repeatedly. For example, attempts to create 128 GiB shared buffers on a db.r5.large instance would fail. With this change, requests for total shared memory allocations larger than the instance memory allow setting the instance to incompatible parameters.

    4. Added logic to clean up unnecessary pg_wal temporary files on a database startup.

    5. Fixed a bug in Aurora PostgreSQL 9.6 that sometimes prevented read/write nodes from starting up when inbound replication is used.

    6. Fixed a bug that could cause brief periods of unavailability due to running out of memory when creating the PostGIS extension with pgAudit enabled.

    7. Added btree page checks to detect tuple metadata inconsistency.

    PostgreSQL 9.6.19, Aurora PostgreSQL 1.9 (Deprecated)

    Note

    The PostgreSQL engine version 9.6.19 and Aurora PostgreSQL 1.9 are no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 9.6.19. For more information about the improvements in PostgreSQL 9.6.19, see PostgreSQL release 9.6.19.

    Aurora PostgreSQL 1.9.2

    High priority stability enhancements

    1. Fixed a bug where a reader node might render an extra or missing row if the reader restarted while the writer node is processing a long transaction with more than 64 subtransactions.

    Additional improvements and enhancements

    1. Fixed a bug where a large S3 import with thousands of clients can cause one or more of the import clients to stop responding.

    Aurora PostgreSQL 1.9.1

    Critical stability enhancements

    1. Fixed a bug that caused a read replica to unsuccessfully restart repeatedly in rare cases.

    Additional improvements and enhancements

    1. Fixed a bug that when under heavy load, snapshot import, COPY import, or S3 import stopped responding in rare cases.

    2. Fixed a bug where a read replica might not join the cluster when the writer was very busy with a write-intensive workload.

    Aurora PostgreSQL 1.9.0

    Critical stability enhancements

    • None

    High priority stability enhancements

    1. Backported fixes for the PostgreSQL community security issues CVE-2020-25694, CVE-2020-25695, and CVE-2020-25696.

    2. Fixed a bug in Aurora PostgreSQL replication that might result in the following error message: ERROR: MultiXactId nnnn has not been created yet -- apparent wraparound

    Additional improvements and enhancements

    1. Aurora PostgreSQL no longer falls behind on a read node when the backend is blocked writing to the database client.

    2. Fixed a bug that in rare cases caused a brief period of unavailability on a read replica when the storage volume grew.

    3. Fixed a bug when creating a database that could return the following error: ERROR: could not create directory on local disk

    4. Fixed a bug in the GiST index that could result in an out of memory condition after promoting an Aurora read replica.

    5. Fixed a bug related to replication when Aurora PostgreSQL is acting as a physical replica of an RDS for PostgreSQL instance that uses GiST indexes. In rare cases, this bug caused a brief period of unavailability after promoting the Aurora cluster.

    PostgreSQL 9.6.18, Aurora PostgreSQL 1.8 (Deprecated)

    Note

    The PostgreSQL engine version 9.6.18 and Aurora PostgreSQL 1.8 are no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 9.6.18. For more information about the improvements in PostgreSQL 9.6.18, see PostgreSQL release 9.6.18.

    There is no version 1.8.1.

    Aurora PostgreSQL release 1.8.2

    Critical stability enhancements

    1. None

    High priority stability enhancements

    1. Fixed a bug in Aurora PostgreSQL replication that could result in the error message ERROR: MultiXactId nnnn has not been created yet -- apparent wraparound.

    2. Backported fixes for the following PostgreSQL community security issues:

    Additional improvements and enhancements

    1. Aurora PostgreSQL no longer falls behind on a read node when the backend is blocked writing to the database client.

    2. Fixed a bug where a DROP DATABASE statement didn't remove any relation files.

    3. Fixed a small memory leak in a b-tree index that could lead to an out of memory condition.

    4. Fixed a bug in the aurora_replica_status() function where the server_id field was sometimes truncated.

    5. Fixed a bug related to replication when Aurora PostgreSQL is acting as a physical replica of an RDS for PostgreSQL instance that uses GiST indexes. In rare cases, this bug caused a brief period of unavailability after promoting the Aurora DB cluster.

    Aurora PostgreSQL 1.8.0

    You can find the following improvements in this release.

    Critical stability enhancements

    1. Fixed a bug related to heap page extend that in rare cases resulted in longer recovery time and impacted availability.

    Additional improvements and enhancements

    1. Fixed a bug where the Aurora replica crashed when workloads with heavy subtransactions are made on the writer instance.

    2. Fixed a bug where the writer instance crashed due to a memory leak and the depletion of memory used to track active transactions.

    3. Fixed a bug that lead to a crash due to improper initialization when there is no free memory available during PostgreSQL backend startup.

    4. Fixed a crash during a BTree prefetch that occurred under certain conditions that depended on the shape and data contained in the index.

    5. Fixed a bug where a SELECT query might incorrectly return the error Attempting to read past EOF of relation rrrr. blockno=bbb nblocks=nnn.

    6. Fixed a bug where the database might be unavailable briefly due to error handling in database storage growth.

    PostgreSQL 9.6.17, Aurora PostgreSQL 1.7 (Deprecated)

    This release of Aurora PostgreSQL is compatible with PostgreSQL 9.6.17. For more information about the improvements in PostgreSQL 9.6.17, see PostgreSQL release 9.6.17.

    Aurora PostgreSQL 1.7.7

    You can find the following improvements in this release.

    Critical stability enhancements

    • None

    High priority stability enhancements

    1. Backported fixes for the following PostgreSQL community security issues:

    Additional improvements and enhancements

    • None

    Aurora PostgreSQL 1.7.6

    You can find the following improvements in this release.

    Critical stability enhancements

    • None

    High priority stability enhancements

    1. Fixed a bug in Aurora PostgreSQL replication that might result in the error message, ERROR: MultiXactId nnnn has not been created yet -- apparent wraparound.

    Additional improvements and enhancements

    1. Fixed a bug that in rare cases caused brief read replica unavailability when storage volume grew.

    2. Fixed a bug in a b-tree index read optimization that might have caused a brief period of unavailability.

    3. Fixed a bug in a GiST index that might result in an out-of-memory condition after promoting an Aurora Read Replica.

    Aurora PostgreSQL 1.7.3

    You can find the following improvements in this release.

    Critical stability enhancements

    • None

    High priority stability enhancements

    • None

    Additional improvements and enhancements

    1. Fixed a bug that might cause brief unavailability for heavy subtransaction workloads when multiple reader instances restart or rejoin the cluster.

    Aurora PostgreSQL 1.7.2

    You can find the following improvements in this release.

    Critical stability enhancements

    1. Fixed a bug related to heap page extend that in rare cases resulted in longer recovery time and impacted availability.

    High Priority Stability Enhancements

    None

    Additional improvements and enhancements

    1. Fixed a bug where the database might be unavailable briefly due to error handling in database storage growth.

    2. Fixed a bug where a SELECT query might incorrectly return the error, Attempting to read past EOF of relation rrrr. blockno=bbb nblocks=nnn.

    3. Fixed an issue with the internal metrics collector that could result in erratic CPU spikes on database instances.

    Aurora PostgreSQL 1.7.1

    You can find the following improvements in this release.

    Critical stability enhancements

    None.

    High priority stability enhancements

    1. Improved performance and availability of read instances when applying DROP TABLE and TRUNCATE TABLE operations.

    2. Fixed a small but continuous memory leak in a diagnostic module that could lead to an out-of-memory condition on smaller DB instance types.

    3. Fixed a bug in the PostGIS extension which could lead to a database restart. This has been reported to the PostGIS community as https://trac.osgeo.org/postgis/ticket/4646.

    4. Fixed a bug where read requests might stop responding due to incorrect error handling in the storage engine.

    5. Fixed a bug that fails for some queries and results in the message ERROR: found xmin xxxxxx from before relfrozenxid yyyyyyy. This could occur following the promotion of a read instance to a write instance.

    Additional improvements and enhancements

    1. Improved performance for queries that read many rows from storage.

    2. Improved performance and availability of reader DB instances during heavy read workload.

    3. Fixed a bug that resulted in the message ERROR: could not create file "base/xxxxxx/yyyyyyy" as a previous version still exists on disk: Success. Please contact AWS customer support. This can occur during object creation after PostgreSQL's 32-bit object identifier has wrapped around.

    4. Fixed a bug in the pg_hint_plan extension where a multi-statement query could lead to a crash when enable_hint_table is enabled. This is tracked in the PostgreSQL community as https://github.com/ossc-db/pg_hint_plan/issues/25.

    5. Changed the following extensions:

      • Updated orafce to version 3.8

    PostgreSQL 9.6.16, Aurora PostgreSQL 1.6 (Deprecated)

    This version of Aurora PostgreSQL is compatible with PostgreSQL 9.6.16. For more information about the improvements in release 9.6.16, see PostgreSQL release 9.6.16.

    This release contains multiple critical stability enhancements. Amazon highly recommends upgrading your Aurora PostgreSQL clusters that use older PostgreSQL 9.6 engines to this release.

    Aurora PostgreSQL 1.6.4

    You can find the following improvements in this release.

    Critical stability enhancements

    • None

    High priority stability enhancements

    1. Backported fixes for the following PostgreSQL community security issues:

    Additional improvements and enhancements

    • None

    Aurora PostgreSQL 1.6.3

    New features

    1. Aurora PostgreSQL now supports the PostgreSQL vacuum_truncate storage parameter to manage vacuum truncation for specific tables. Set this storage parameter to false when creating or altering a table to prevent the VACUUM SQL command from truncating the table's trailing empty pages.

    Critical stability enhancements

    • None

    High priority stability enhancements

    1. Fixed a bug where reads from storage might stop responding due to incorrect error handling.

    Additional improvements and enhancements

    • None

    Aurora PostgreSQL 1.6.2

    You can find the following improvements in this engine update.

    Critical stability enhancements

    1. Fixed a bug in which a reader DB instance might temporarily use stale data. This could lead to wrong results such as too few or too many rows. This error is not persisted on storage, and will clear when the database page containing the row has been evicted from cache. This can happen when the primary DB instance enters a transaction snapshot overflow due to having more than 64 subtransactions in a single transaction. Applications susceptible to this bug include those that use SQL savepoints or PostgreSQL exception handlers with more than 64 subtransactions in the top transaction.

    High priority stability enhancements

    1. Fixed a bug that may cause a reader DB instance to crash causing unavailability while attempting to the join the DB cluster. This can happen in some cases when the primary DB instance has a transaction snapshot overflow due to a high number of subtransactions. In this situation the reader DB instance will be unable to join until the snapshot overflow has cleared.

    Additional improvements and enhancements

    1. Fixed a bug that prevented Performance Insights from determining the query ID of a running statement.

    Aurora PostgreSQL 1.6.1

    You can find the following improvements in this engine update.

    Critical stability enhancements

    1. None

    High priority stability enhancements

    1. Fixed a bug that might cause the database engine to crash causing unavailability. This occurred if a newly established database connection encountered a resource exhaustion-related error during initialization after successful authentication.

    Additional improvements and enhancements

    1. Provided general improvements to the stability and availability of Aurora PostgreSQL.

    Aurora PostgreSQL 1.6.0

    You can find the following new features and improvements in this engine version.

    New features

    1. Updates to the apg_plan_mgmt extension. For more information, see Managing query execution plans for Aurora PostgreSQL in the Amazon Aurora User Guide.

    Critical stability enhancements

    1. Fixed a bug related to creating B-tree indexes on temporary tables that in rare cases may result in longer recovery time, and impact availability.

    2. Fixed a bug related to replication when Aurora PostgreSQL is acting as a physical replica of an RDS for PostgreSQL instance. In rare cases, this bug causes a log write failure that may result in longer recovery time, and impact availability.

    3. Fixed a bug related to handling of reads with high I/O latency that in rare cases may result in longer recovery time, and impact availability.

    High priority stability enhancements

    1. Fixed multiple bugs, which cause Aurora to crash during prefetch operations on Btree indexes.

    2. Enhanced the validation checks performed on data blocks in the buffer cache. This improves Aurora's detection of inconsistency.

    Additional improvements and enhancements

    1. The query plan management extension apg_plan_mgmt has an improved algorithm for managing plan generation for highly partitioned tables.

    2. Reduced startup time on instances with large caches via improvements in the buffer cache recovery algorithm.

    3. Improved the performance of the read-node-apply process under high transaction rate workloads by using changes to PostgreSQL LWLock prioritization. These changes prevent starvation of the read-node-apply process while the PostgreSQL ProcArray is under heavy contention.

    4. Fixed a bug in which a read node may crash during the replay of a PostgreSQL SLRU-truncate operation.

    5. Fixed a bug where in rare cases, database writes might stall following an error returned by one of the six copies of an Aurora log record.

    6. Fixed a memory leak on read nodes when cluster cache management is enabled.

    7. Fixed a bug in which importing an RDS for PostgreSQL snapshot might stop responding if the source snapshot contains a large number of unlogged relations.

    8. Fixed a bug related to hot_standby_feedback for read nodes in which the read node may report the wrong transaction id epoch to the write node. This can cause the write node to ignore the hot_standby_feedback and invalidate snapshots on the read node.

    9. Fixed a bug in which storage errors that occur during CREATE DATABASE statements are not properly handled. The bug left the resulting database inaccessible. The correct behavior is to fail the database creation and return the appropriate error to the user.

    10. Improved handling of PostgreSQL snapshot overflow when a read node attempts to connect to a write node. Prior to this change, if the write node was in a snapshot overflow state, the read node was unable to join. A message appear in the PostgreSQL log file in the form DEBUG: recovery snapshot waiting for non-overflowed snapshot or until oldest active xid on standby is at least xxxxxxx (now yyyyyyy). A snapshot overflow occurs when an individual transaction has created over 64 subtransactions.

    11. Fixed a bug related to common table expressions in which an error is incorrectly raised when a NOT IN class exists in a CTE. The error is CTE with NOT IN fails with ERROR: could not find CTE CTE-Name.

    12. Fixed a bug related to an incorrect last_error_timestamp value in the aurora_replica_status table.

    13. Fixed a bug to avoid populating shared buffers with blocks belonging to temporary objects. These blocks correctly reside in PostgreSQL backend local buffers.

    14. Fixed a bug where in rare cases Aurora may exhibit 100% CPU utilization while acting as a replica of an RDS for PostgreSQL instance even when the replication stream is idle.

    15. Backported a change from PostgreSQL 11 which improves the cleanup of orphaned temporary tables. Without this change, it is possible that in rare cases orphaned temporary tables can to lead to transaction ID wraparound. For more information, see this PostgreSQL community commit.

    16. Fixed a bug where a Writer instance may accept replication registration requests from Reader instances while having an uninitialized startup process.

    17. Changed the following extensions:

      • Updated pg_hint_plan to version 1.2.5.

    PostgreSQL 9.6.12, Aurora PostgreSQL 1.5 (Deprecated)

    Note

    The PostgreSQL engine version 9.6.12 with the Aurora PostgreSQL 1.5 is no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 9.6.12. For more information about the improvements in PostgreSQL 9.6.12, see PostgreSQL release 9.6.12.

    Aurora PostgreSQL 1.5.3

    You can find the following improvements in this release.

    Improvements

    1. Fixed a bug that could cause DB instance restarts.

    2. Fixed a bug that could cause a restart when reads occurred during failovers.

    3. Fixed a bug that could result in inconsistent metadata.

    Aurora PostgreSQL 1.5.2

    You can find the following improvements in this release.

    Improvements

    1. Provided a backport fix for the PostgreSQL community security issue CVE-2019-10130.

    2. Fixed a bug in which the read node replay process might stop responding while applying a modification to a generalized search tree (GiST) index.

    3. Fixed a bug in which visibility map pages may contain incorrect freeze bits following a failover to a read node.

    4. Fixed a bug in which the error "relation relation-name does not exist" is incorrectly reported.

    5. Optimized log traffic between the write node and read nodes during index maintenance.

    6. Fixed a bug in which queries on read nodes may crash while performing a B-tree index scan.

    7. The function aurora_stat_memctx_usage now reports the number of instances of a given context name.

    8. Fixed a bug in which the function aurora_stat_memctx_usage reported incorrect results.

    9. Fixed a bug in which the read node replay process may wait to stop conflicting queries beyond the configured max_standby_streaming_delay.

    10. Additional information is now logged on read nodes when active connections conflict with the relay process.

    Aurora PostgreSQL 1.5.1

    You can find the following improvements in this release.

    Improvements

    1. Fixed multiple bugs related to I/O prefetching, which caused engine crashes.

    Aurora PostgreSQL 1.5.0

    You can find the following improvements in this release.

    New features

    1. Aurora PostgreSQL now performs I/O prefetching while scanning B-tree indexes. This results in significantly improved performance for B-tree scans over uncached data.

    Improvements

    1. Addressed numerous issues that caused read nodes to fail to startup while the cluster is under heavy write workload.

    2. Fixed a bug in which usage of the aurora_stat_memctx_usage() function could lead to a crash.

    3. Improved the cache replacement strategy used by table scans to minimize thrashing of the buffer cache.

    PostgreSQL 9.6.11, Aurora PostgreSQL 1.4 (Deprecated)

    Note

    The PostgreSQL engine version 9.6.11 with the Aurora PostgreSQL 1.4 is no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 9.6.11. For more information about the improvements in PostgreSQL 9.6.11, see PostgreSQL release 9.6.11.

    You can find the following improvements in this release.

    New features

    1. Support is added for the pg_similarity extension version 1.0.

    2. Aurora PostgreSQL now supports the PostgreSQL vacuum_truncate storage parameter to manage vacuum truncation for specific tables. Set this storage parameter to false when creating or altering a table to prevent the VACUUM SQL command from truncating the table's trailing empty pages.

    Improvements

    1. This release contains all fixes, features, and improvements present in PostgreSQL 9.6.9, Aurora PostgreSQL 1.3 (Deprecated).

    2. Network traffic between the writer and reader nodes is now compressed to reduce network utilization. This reduces the chance of read node unavailability due to network saturation.

    3. Performance of subtransactions has improved under high concurrency workloads.

    4. An update for the pg_hint_plan extension to version 1.2.3.

    5. Fixed an issue where on a busy system, a commit with millions of subtransactions (and sometimes with commit timestamps enabled) can cause Aurora to crash.

    6. Fixed an issue where an INSERT statement with VALUES could fail with the message "Attempting to read past EOF of relation".

    7. An upgrade of the apg_plan_mgmt extension to version 1.0.1. For details, see Version 1.0.1 of the Aurora PostgreSQL apg_plan_mgmt extension.

      The apg_plan_mgmt extension is used with query plan management. For more about how to install, upgrade, and use the apg_plan_mgmt extension, see Managing query execution plans for Aurora PostgreSQL in the Amazon Aurora User Guide.

    PostgreSQL 9.6.9, Aurora PostgreSQL 1.3 (Deprecated)

    Note

    The PostgreSQL engine version 9.6.9 with the Aurora PostgreSQL 1.3 is no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    This release of Aurora PostgreSQL is compatible with PostgreSQL 9.6.9. For more information about the improvements in PostgreSQL 9.6.9, see PostgreSQL release 9.6.9.

    Aurora PostgreSQL 1.3.2

    You can find the following improvements in this release.

    New features

    1. Added the ProcArrayGroupUpdate wait event.

    Improvements

    1. Fixed a bug which could cause an error running queries. The message reported was of the form "CLOG segment 123 does not exist: No such file or directory".

    2. Increased the supported size of IAM passwords to 8KB.

    3. Improved consistency of performance under high throughput write workloads.

    4. Fixed a bug which could cause a read replica to crash during a restart.

    5. Fixed a bug which could cause an error running queries. The message reported was of the form "SQL ERROR: Attempting to read past EOF of relation".

    6. Fixed a bug which could cause an increase in memory usage after a restart.

    7. Fixed a bug which could cause a transaction with a large number of subtransactions to fail.

    8. Merged a patch from community PostgreSQL which addresses potential failures when using GIN indexes. For more information, see https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=f9e66f2fbbb49a493045c8d8086a9b15d95b8f18.

    9. Fixed a bug which could cause a snapshot import from RDS for PostgreSQL to fail.

    Aurora PostgreSQL 1.3.0

    You can find the following improvements in this release.

    Improvements

    1. This release contains all fixes, features, and improvements present in PostgreSQL 9.6.8, Aurora PostgreSQL 1.2 (Deprecated).

    2. Updated the GDAL library, which is used by the PostGIS extension.

    3. Updated the following PostgreSQL extensions:

      • ip4r updated to version 2.1.1.

      • pgaudit updated to version 1.1.1.

      • pg_repack updated to version 1.4.3.

      • plv8 updated to version 2.1.2.

    4. Fixed an issue in the monitoring system that could incorrectly cause a failover when local disk usage is high.

    5. Fixed a bug in which Aurora PostgreSQL can repeatedly crash, reporting:

      PANIC: new_record_total_len (8201) must be less than BLCKSZ (8192), rmid (6), info (32)

    6. Fixed a bug in which an Aurora PostgreSQL read node might be unable to rejoin a cluster due to recovery of a large buffer cache. This issue is unlikely to occur on instances other than r4.16xlarge.

    7. Fixed a bug in which inserting into an empty GIN index leaf page imported from pre-9.4 engine versions can cause the Aurora storage volume to become unavailable.

    8. Fixed a bug in which, in rare circumstances, a crash during transaction commit could result in the loss of CommitTs data for the committing transaction. The actual durability of the transaction was not impacted by this bug.

    9. Fixed a bug in the PostGIS extension in which PostGIS can crash in the function gserialized_gist_picksplit_2d().

    10. Improved the stability of read-only nodes during heavy write traffic on instances smaller than r4.8xl. This specifically addresses a situation where the network bandwidth between the writer and the reader is constrained.

    11. Fixed a bug in which an Aurora PostgreSQL instance acting as a replication target of an RDS for PostgreSQL instance crashed with the following error:

      FATAL: could not open file "base/16411/680897_vm": No such file or directory" during "xlog redo at 782/3122D540 for Storage/TRUNCATE"

    12. Fixed a memory leak on read-only nodes in which the heap size for the "aurora wal replay process" will continue to grow. This is observable via Enhanced Monitoring.

    13. Fixed a bug in which Aurora PostgreSQL can fail to start, with the following message reported in the PostgreSQL log:

      FATAL: Storage initialization failed.

    14. Fixed a performance limitation on heavy write workloads that caused waits on the LWLock:buffer_content and IO:ControlFileSyncUpdate events.

    15. Fixed a bug in which read nodes could crash following a specific type of free space change from the write node.

    PostgreSQL 9.6.8, Aurora PostgreSQL 1.2 (Deprecated)

    Note

    The PostgreSQL engine version 9.6.8 with the Aurora PostgreSQL 1.2 is no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    For more information about PostgreSQL 9.6.8, see PostgreSQL release 9.6.8.

    Aurora PostgreSQL 1.2.2

    You can find the following improvements in this release.

    New features

    1. Added the ProcArrayGroupUpdate wait event.

    Improvements

    1. Fixed a bug which could cause an error running queries. The message reported was of the form "CLOG segment 123 does not exist: No such file or directory".

    2. Increased the supported size of IAM passwords to 8KB.

    3. Improved consistency of performance under high throughput write workloads.

    4. Fixed a bug which could cause a read replica to crash during a restart.

    5. Fixed a bug which could cause an error running queries. The message reported was of the form "SQL ERROR: Attempting to read past EOF of relation".

    6. Fixed a bug which could cause an increase in memory usage after a restart.

    7. Fixed a bug which could cause a transaction with a large number of subtransactions to fail.

    8. Merged a patch from community PostgreSQL which addresses potential failures when using GIN indexes. For more information, see https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=f9e66f2fbbb49a493045c8d8086a9b15d95b8f18.

    9. Fixed a bug which could cause a snapshot import from RDS for PostgreSQL to fail.

    Aurora PostgreSQL 1.2.0

    You can find the following improvements in this release.

    New features

    1. Introduced the aurora_stat_memctx_usage() function. This function reports internal memory context usage for each PostgreSQL backend. You can use this function to help determine why certain backends are consuming large amounts of memory.

    Improvements

    1. This release contains all fixes, features, and improvements present in PostgreSQL 9.6.6 Aurora PostgreSQL 1.1 (Deprecated).

    2. Updates the following PostgreSQL extensions:

      • pg_hint_plan updated to version 1.2.2

      • plv8 updated to version 2.1.0

    3. Improves efficiency of traffic between writer and reader nodes.

    4. Improves connection establishment performance.

    5. Improve the diagnostic data provided in the PostgreSQL error log when an out-of-memory error is encountered.

    6. Multiple fixes to improve the reliability and performance of snapshot import from Amazon RDS for PostgreSQL to Aurora PostgreSQL-Compatible Edition.

    7. Multiple fixes to improve the reliability and performance of Aurora PostgreSQL read nodes.

    8. Fixes a bug in which an otherwise idle instance can generate unnecessary read traffic on an Aurora storage volume.

    9. Fixes a bug in which duplicate sequence values can be encountered during insert. The problem only occurs when migrating a snapshot from RDS for PostgreSQL to Aurora PostgreSQL. The fix prevents the problem from being introduced when performing the migration. Instances migrated before this release can still encounter duplicate key errors.

    10. Fixes a bug in which an RDS for PostgreSQL instance migrated to Aurora PostgreSQL using replication can run out of memory doing insert/update of GIST indexes, or cause other issues with GIST indexes.

    11. Fixes a bug in which vacuum can fail to update the corresponding pg_database.datfrozenxid value for a database.

    12. Fixes a bug in which a crash while creating a new MultiXact (contended row level lock) can cause Aurora PostgreSQL to stop responding indefinitely on the first access to the same relation after the engine restarts.

    13. Fixes a bug in which a PostgreSQL backend can't be terminated or canceled while invoking an fdw call.

    14. Fixes a bug in which one vCPU is fully utilized at all times by the Aurora storage daemon. This issue is especially noticeable on smaller instance classes, such as r4.large, where it can lead to 25–50 percent CPU usage when idle.

    15. Fixes a bug in which an Aurora PostgreSQL writer node can fail over spuriously.

    16. Fixes a bug in which, in a rare scenario, an Aurora PostgreSQL read node can report:

      "FATAL: lock buffer_io is not held"

    17. Fixes a bug in which stale relcache entries can halt vacuuming of relations and push the system close to transaction ID wraparound. The fix is a port of a PostgreSQL community patch scheduled to be released in a future minor version.

    18. Fixes a bug in which a failure while extending a relation can cause Aurora to crash while scanning the partially extended relation.

    PostgreSQL 9.6.6 Aurora PostgreSQL 1.1 (Deprecated)

    Note

    The PostgreSQL engine version 9.6.6 with the Aurora PostgreSQL 1.1 is no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    For more information about PostgreSQL 9.6.6 see, PostgreSQL release 9.6.6.

    You can find the following improvements in this engine update:

    New features

    1. Introduced the aurora_stat_utils extension. This extension includes two functions:

      • aurora_wait_report() function for wait event monitoring

      • aurora_log_report() for log record write monitoring

    2. Added support for the following extensions:

      • orafce 3.6.1

      • pgrouting 2.4.2

      • postgresql-hll 2.10.2

      • prefix 1.2.6

    Improvements

    1. This release contains all fixes, features, and improvements present in Aurora PostgreSQL 1.0.11

    2. Updates for the following PostgreSQL extensions:

      • PostGIS extension updated to version 2.3.4

      • geos library updated to version 3.6.2

      • pg_repack updated to version 1.4.2

    3. Access to the pg_statistic relation enabled.

    4. Disabled the 'effective_io_concurrency' guc parameter, as it does not apply to Aurora storage.

    5. Changed the 'hot_standby_feedback' guc parameter to not-modifiable and set the value to '1'.

    6. Improved heap page read performance during a vacuum operation.

    7. Improved performance of snapshot conflict resolution on read nodes.

    8. Improved performance of transaction snapshot acquisition on read nodes.

    9. Improved write performance for GIN meta page updates.

    10. Improved buffer cache recovery performance during startup.

    11. Fixes a bug that caused a database engine crash at startup while recovering prepared transactions.

    12. Fixes a bug that could result in the inability to start a read node when there are a large number of prepared transactions.

    13. Fixes a bug that could cause a read node to report:

      ERROR: could not access status of transaction 6080077

      DETAIL:* *Could not open file "pg_subtrans/005C": No such file or directory.

    14. Fixes a bug that could cause the error below when replicating from RDS PostgreSQL to Aurora PostgreSQL:

      FATAL: lock buffer_content is not held

      CONTEXT: xlog redo at 46E/F1330870 for Storage/TRUNCATE: base/13322/8058750 to 0 blocks flags 7

    15. Fixes a bug that could cause Aurora PostgreSQL to stop responding while replaying a multixact WAL record when replicating from RDS for PostgreSQL to Aurora PostgreSQL.

    16. Multiple improvements to the reliability of importing snapshots from RDS PostgreSQL to Aurora PostgreSQL.

    PostgreSQL 9.6.3, Aurora PostgreSQL 1.0 (Deprecated)

    Note

    The PostgreSQL engine version 9.6.3 with the Aurora PostgreSQL 1.0 is no longer supported. To upgrade, see Upgrading the PostgreSQL DB engine for Aurora PostgreSQL in the Amazon Aurora User Guide.

    For more information about PostgreSQL 9.6.3 see, PostgreSQL release 9.6.3.

    This version includes the following Releases:

    Aurora PostgreSQL 1.0.11

    You can find the following improvements in this engine update:

    1. Fixes an issue with parallel query processing that can lead to incorrect results.

    2. Fixes an issue with visibility map handling during replication from Amazon RDS for PostgreSQL that can cause the Aurora storage volume to become unavailable.

    3. Corrects the pg-repack extension.

    4. Implements improvements to maintain fresh nodes.

    5. Fixes issues that can lead to an engine crash.

    Aurora PostgreSQL 1.0.10

    This update includes a new feature. You can now replicate an Amazon RDS PostgreSQL DB instance to Aurora PostgreSQL. For more information, see Replication with Amazon Aurora PostgreSQL in the Amazon Aurora User Guide.

    You can find the following improvements in this engine update:

    1. Adds error logging when a cache exists and a parameter change results in a mismatched buffer cache, storage format, or size.

    2. Fixes an issue that causes an engine reboot if there is an incompatible parameter value for huge pages.

    3. Improves handling of multiple truncate table statements during a replay of a write ahead log (WAL) on a read node.

    4. Reduces static memory overhead to reduce out-of-memory errors.

    5. Fixes an issue that can lead to out-of-memory errors while performing an insert with a GiST index.

    6. Improves snapshot import from RDS for PostgreSQL, removing the requirement that a vacuum be performed on uninitialized pages.

    7. Fixes an issue that causes prepared transactions to return to the previous state following an engine crash.

    8. Implements improvements to prevent read nodes from becoming stale.

    9. Implements improvements to reduce downtime with an engine restart.

    10. Fixes issues that can cause an engine crash.

    Aurora PostgreSQL 1.0.9

    In this engine update, we fix an issue that can cause the Aurora storage volume to become unavailable when importing a snapshot from RDS for PostgreSQL that contained uninitialized pages.

    Aurora PostgreSQL 1.0.8

    You can find the following improvements in this engine update:

    1. Fixes an issue that prevented the engine from starting if the shared_preload_libraries instance parameter contained pg_hint_plan.

    2. Fixes the error "Attempt to fetch heap block XXX is beyond end of heap (YYY blocks)," which can occur during parallel scans.

    3. Improves the effectiveness of prefetching on reads for a vacuum.

    4. Fixes issues with snapshot import from RDS for PostgreSQL, which can fail if there are incompatible pg_internal.init files in the source snapshot.

    5. Fixes an issue that can cause a read node to crash with the message "aurora wal replay process (PID XXX) was terminated by signal 11: Segmentation fault". This issue occurs when the reader applied a visibility map change for an uncached visibility map page.

    Aurora PostgreSQL 1.0.7

    This is the first generally available release of Amazon Aurora PostgreSQL-Compatible Edition.