AWS SDK Version 3 for .NET
API Reference

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Container for the parameters to the ModifyDBInstance operation. Modifies settings for a DB instance. You can change one or more database configuration parameters by specifying these parameters and the new values in the request.

Inheritance Hierarchy

System.Object
  Amazon.Runtime.AmazonWebServiceRequest
    Amazon.RDS.AmazonRDSRequest
      Amazon.RDS.Model.ModifyDBInstanceRequest

Namespace: Amazon.RDS.Model
Assembly: AWSSDK.RDS.dll
Version: 3.x.y.z

Syntax

C#
public class ModifyDBInstanceRequest : AmazonRDSRequest
         IAmazonWebServiceRequest

The ModifyDBInstanceRequest type exposes the following members

Constructors

NameDescription
Public Method ModifyDBInstanceRequest()

Empty constructor used to set properties independently even when a simple constructor is available

Public Method ModifyDBInstanceRequest(string)

Instantiates ModifyDBInstanceRequest with the parameterized properties

Properties

NameTypeDescription
Public Property AllocatedStorage System.Int32

Gets and sets the property AllocatedStorage.

The new storage capacity of the RDS instance. Changing this setting does not result in an outage and the change is applied during the next maintenance window unless ApplyImmediately is set to true for this request.

MySQL

Default: Uses existing setting

Valid Values: 5-6144

Constraints: Value supplied must be at least 10% greater than the current value. Values that are not at least 10% greater than the existing value are rounded up so that they are 10% greater than the current value.

Type: Integer

MariaDB

Default: Uses existing setting

Valid Values: 5-6144

Constraints: Value supplied must be at least 10% greater than the current value. Values that are not at least 10% greater than the existing value are rounded up so that they are 10% greater than the current value.

Type: Integer

PostgreSQL

Default: Uses existing setting

Valid Values: 5-6144

Constraints: Value supplied must be at least 10% greater than the current value. Values that are not at least 10% greater than the existing value are rounded up so that they are 10% greater than the current value.

Type: Integer

Oracle

Default: Uses existing setting

Valid Values: 10-6144

Constraints: Value supplied must be at least 10% greater than the current value. Values that are not at least 10% greater than the existing value are rounded up so that they are 10% greater than the current value.

SQL Server

Cannot be modified.

If you choose to migrate your DB instance from using standard storage to using Provisioned IOPS, or from using Provisioned IOPS to using standard storage, the process can take time. The duration of the migration depends on several factors such as database load, storage size, storage type (standard or Provisioned IOPS), amount of IOPS provisioned (if any), and the number of prior scale storage operations. Typical migration times are under 24 hours, but the process can take up to several days in some cases. During the migration, the DB instance will be available for use, but might experience performance degradation. While the migration takes place, nightly backups for the instance will be suspended. No other Amazon RDS operations can take place for the instance, including modifying the instance, rebooting the instance, deleting the instance, creating a Read Replica for the instance, and creating a DB snapshot of the instance.

Public Property AllowMajorVersionUpgrade System.Boolean

Gets and sets the property AllowMajorVersionUpgrade.

Indicates that major version upgrades are allowed. Changing this parameter does not result in an outage and the change is asynchronously applied as soon as possible.

Constraints: This parameter must be set to true when specifying a value for the EngineVersion parameter that is a different major version than the DB instance's current version.

Public Property ApplyImmediately System.Boolean

Gets and sets the property ApplyImmediately.

Specifies whether the modifications in this request and any pending modifications are asynchronously applied as soon as possible, regardless of the PreferredMaintenanceWindow setting for the DB instance.

If this parameter is set to false, changes to the DB instance are applied during the next maintenance window. Some parameter changes can cause an outage and will be applied on the next call to RebootDBInstance, or the next failure reboot. Review the table of parameters in Modifying a DB Instance and Using the Apply Immediately Parameter to see the impact that setting ApplyImmediately to true or false has for each modified parameter and to determine when the changes will be applied.

Default: false

Public Property AutoMinorVersionUpgrade System.Boolean

Gets and sets the property AutoMinorVersionUpgrade.

Indicates that minor version upgrades will be applied automatically to the DB instance during the maintenance window. Changing this parameter does not result in an outage except in the following case and the change is asynchronously applied as soon as possible. An outage will result if this parameter is set to true during the maintenance window, and a newer minor version is available, and RDS has enabled auto patching for that engine version.

Public Property BackupRetentionPeriod System.Int32

Gets and sets the property BackupRetentionPeriod.

The number of days to retain automated backups. Setting this parameter to a positive number enables backups. Setting this parameter to 0 disables automated backups.

Changing this parameter can result in an outage if you change from 0 to a non-zero value or from a non-zero value to 0. These changes are applied during the next maintenance window unless the ApplyImmediately parameter is set to true for this request. If you change the parameter from one non-zero value to another non-zero value, the change is asynchronously applied as soon as possible.

Amazon Aurora

Not applicable. The retention period for automated backups is managed by the DB cluster. For more information, see ModifyDBCluster.

Default: Uses existing setting

Constraints:

  • Must be a value from 0 to 35

  • Can be specified for a MySQL Read Replica only if the source is running MySQL 5.6

  • Can be specified for a PostgreSQL Read Replica only if the source is running PostgreSQL 9.3.5

  • Cannot be set to 0 if the DB instance is a source to Read Replicas

Public Property CACertificateIdentifier System.String

Gets and sets the property CACertificateIdentifier.

Indicates the certificate that needs to be associated with the instance.

Public Property CopyTagsToSnapshot System.Boolean

Gets and sets the property CopyTagsToSnapshot.

True to copy all tags from the DB instance to snapshots of the DB instance; otherwise false. The default is false.

Public Property DBInstanceClass System.String

Gets and sets the property DBInstanceClass.

The new compute and memory capacity of the DB instance. To determine the instance classes that are available for a particular DB engine, use the DescribeOrderableDBInstanceOptions action. Note that not all instance classes are available in all regions for all DB engines.

Passing a value for this setting causes an outage during the change and is applied during the next maintenance window, unless ApplyImmediately is specified as true for this request.

Default: Uses existing setting

Valid Values:

db.t1.micro | db.m1.small | db.m1.medium | db.m1.large | db.m1.xlarge
            | db.m2.xlarge | db.m2.2xlarge | db.m2.4xlarge | db.m3.medium | db.m3.large | db.m3.xlarge
            | db.m3.2xlarge | db.m4.large | db.m4.xlarge | db.m4.2xlarge | db.m4.4xlarge | db.m4.10xlarge
            | db.r3.large | db.r3.xlarge | db.r3.2xlarge | db.r3.4xlarge | db.r3.8xlarge | db.t2.micro
            | db.t2.small | db.t2.medium | db.t2.large

Public Property DBInstanceIdentifier System.String

Gets and sets the property DBInstanceIdentifier.

The DB instance identifier. This value is stored as a lowercase string.

Constraints:

  • Must be the identifier for an existing DB instance

  • Must contain from 1 to 63 alphanumeric characters or hyphens

  • First character must be a letter

  • Cannot end with a hyphen or contain two consecutive hyphens

Public Property DBParameterGroupName System.String

Gets and sets the property DBParameterGroupName.

The name of the DB parameter group to apply to the DB instance. Changing this setting does not result in an outage. The parameter group name itself is changed immediately, but the actual parameter changes are not applied until you reboot the instance without failover. The db instance will NOT be rebooted automatically and the parameter changes will NOT be applied during the next maintenance window.

Default: Uses existing setting

Constraints: The DB parameter group must be in the same DB parameter group family as this DB instance.

Public Property DBPortNumber System.Int32

Gets and sets the property DBPortNumber.

The port number on which the database accepts connections.

The value of the DBPortNumber parameter must not match any of the port values specified for options in the option group for the DB instance.

Your database will restart when you change the DBPortNumber value regardless of the value of the ApplyImmediately parameter.

MySQL

Default: 3306

Valid Values: 1150-65535

MariaDB

Default: 3306

Valid Values: 1150-65535

PostgreSQL

Default: 5432

Valid Values: 1150-65535

Type: Integer

Oracle

Default: 1521

Valid Values: 1150-65535

SQL Server

Default: 1433

Valid Values: 1150-65535 except for 1434, 3389, 47001, 49152, and 49152 through 49156.

Amazon Aurora

Default: 3306

Valid Values: 1150-65535

Public Property DBSecurityGroups System.Collections.Generic.List<System.String>

Gets and sets the property DBSecurityGroups.

A list of DB security groups to authorize on this DB instance. Changing this setting does not result in an outage and the change is asynchronously applied as soon as possible.

Constraints:

  • Must be 1 to 255 alphanumeric characters

  • First character must be a letter

  • Cannot end with a hyphen or contain two consecutive hyphens

Public Property DBSubnetGroupName System.String

Gets and sets the property DBSubnetGroupName.

The new DB subnet group for the DB instance. You can use this parameter to move your DB instance to a different VPC. If your DB instance is not in a VPC, you can also use this parameter to move your DB instance into a VPC. For more information, see Updating the VPC for a DB Instance.

Changing the subnet group causes an outage during the change. The change is applied during the next maintenance window, unless you specify true for the ApplyImmediately parameter.

Constraints: Must contain no more than 255 alphanumeric characters, periods, underscores, spaces, or hyphens.

Example: mySubnetGroup

Public Property Domain System.String

Gets and sets the property Domain.

The Active Directory Domain to move the instance to. Specify none to remove the instance from its current domain. The domain must be created prior to this operation. Currently only a Microsoft SQL Server instance can be created in a Active Directory Domain.

Public Property DomainIAMRoleName System.String

Gets and sets the property DomainIAMRoleName.

The name of the IAM role to use when making API calls to the Directory Service.

Public Property EnableIAMDatabaseAuthentication System.Boolean

Gets and sets the property EnableIAMDatabaseAuthentication.

True to enable mapping of AWS Identity and Access Management (IAM) accounts to database accounts; otherwise false.

You can enable IAM database authentication for the following database engines

Amazon Aurora

Not applicable. Mapping AWS IAM accounts to database accounts is managed by the DB cluster. For more information, see ModifyDBCluster.

MySQL

  • For MySQL 5.6, minor version 5.6.34 or higher

  • For MySQL 5.7, minor version 5.7.16 or higher

Default: false

Public Property EnablePerformanceInsights System.Boolean

Gets and sets the property EnablePerformanceInsights.

Public Property EngineVersion System.String

Gets and sets the property EngineVersion.

The version number of the database engine to upgrade to. Changing this parameter results in an outage and the change is applied during the next maintenance window unless the ApplyImmediately parameter is set to true for this request.

For major version upgrades, if a nondefault DB parameter group is currently in use, a new DB parameter group in the DB parameter group family for the new engine version must be specified. The new DB parameter group can be the default for that DB parameter group family.

For a list of valid engine versions, see CreateDBInstance.

Public Property Iops System.Int32

Gets and sets the property Iops.

The new Provisioned IOPS (I/O operations per second) value for the RDS instance. Changing this setting does not result in an outage and the change is applied during the next maintenance window unless the ApplyImmediately parameter is set to true for this request.

Default: Uses existing setting

Constraints: Value supplied must be at least 10% greater than the current value. Values that are not at least 10% greater than the existing value are rounded up so that they are 10% greater than the current value. If you are migrating from Provisioned IOPS to standard storage, set this value to 0. The DB instance will require a reboot for the change in storage type to take effect.

SQL Server

Setting the IOPS value for the SQL Server database engine is not supported.

Type: Integer

If you choose to migrate your DB instance from using standard storage to using Provisioned IOPS, or from using Provisioned IOPS to using standard storage, the process can take time. The duration of the migration depends on several factors such as database load, storage size, storage type (standard or Provisioned IOPS), amount of IOPS provisioned (if any), and the number of prior scale storage operations. Typical migration times are under 24 hours, but the process can take up to several days in some cases. During the migration, the DB instance will be available for use, but might experience performance degradation. While the migration takes place, nightly backups for the instance will be suspended. No other Amazon RDS operations can take place for the instance, including modifying the instance, rebooting the instance, deleting the instance, creating a Read Replica for the instance, and creating a DB snapshot of the instance.

Public Property LicenseModel System.String

Gets and sets the property LicenseModel.

The license model for the DB instance.

Valid values: license-included | bring-your-own-license | general-public-license

Public Property MasterUserPassword System.String

Gets and sets the property MasterUserPassword.

The new password for the master user. Can be any printable ASCII character except "/", """, or "@".

Changing this parameter does not result in an outage and the change is asynchronously applied as soon as possible. Between the time of the request and the completion of the request, the MasterUserPassword element exists in the PendingModifiedValues element of the operation response.

Amazon Aurora

Not applicable. The password for the master user is managed by the DB cluster. For more information, see ModifyDBCluster.

Default: Uses existing setting

Constraints: Must be 8 to 41 alphanumeric characters (MySQL, MariaDB, and Amazon Aurora), 8 to 30 alphanumeric characters (Oracle), or 8 to 128 alphanumeric characters (SQL Server).

Amazon RDS API actions never return the password, so this action provides a way to regain access to a primary instance user if the password is lost. This includes restoring privileges that might have been accidentally revoked.

Public Property MonitoringInterval System.Int32

Gets and sets the property MonitoringInterval.

The interval, in seconds, between points when Enhanced Monitoring metrics are collected for the DB instance. To disable collecting Enhanced Monitoring metrics, specify 0. The default is 0.

If MonitoringRoleArn is specified, then you must also set MonitoringInterval to a value other than 0.

Valid Values: 0, 1, 5, 10, 15, 30, 60

Public Property MonitoringRoleArn System.String

Gets and sets the property MonitoringRoleArn.

The ARN for the IAM role that permits RDS to send enhanced monitoring metrics to CloudWatch Logs. For example, arn:aws:iam:123456789012:role/emaccess. For information on creating a monitoring role, go to To create an IAM role for Amazon RDS Enhanced Monitoring.

If MonitoringInterval is set to a value other than 0, then you must supply a MonitoringRoleArn value.

Public Property MultiAZ System.Boolean

Gets and sets the property MultiAZ.

Specifies if the DB instance is a Multi-AZ deployment. Changing this parameter does not result in an outage and the change is applied during the next maintenance window unless the ApplyImmediately parameter is set to true for this request.

Constraints: Cannot be specified if the DB instance is a Read Replica.

Public Property NewDBInstanceIdentifier System.String

Gets and sets the property NewDBInstanceIdentifier.

The new DB instance identifier for the DB instance when renaming a DB instance. When you change the DB instance identifier, an instance reboot will occur immediately if you set Apply Immediately to true, or will occur during the next maintenance window if Apply Immediately to false. This value is stored as a lowercase string.

Constraints:

  • Must contain from 1 to 63 alphanumeric characters or hyphens

  • First character must be a letter

  • Cannot end with a hyphen or contain two consecutive hyphens

Public Property OptionGroupName System.String

Gets and sets the property OptionGroupName.

Indicates that the DB instance should be associated with the specified option group. Changing this parameter does not result in an outage except in the following case and the change is applied during the next maintenance window unless the ApplyImmediately parameter is set to true for this request. If the parameter change results in an option group that enables OEM, this change can cause a brief (sub-second) period during which new connections are rejected but existing connections are not interrupted.

Permanent options, such as the TDE option for Oracle Advanced Security TDE, cannot be removed from an option group, and that option group cannot be removed from a DB instance once it is associated with a DB instance

Public Property PerformanceInsightsKMSKeyId System.String

Gets and sets the property PerformanceInsightsKMSKeyId.

Public Property PreferredBackupWindow System.String

Gets and sets the property PreferredBackupWindow.

The daily time range during which automated backups are created if automated backups are enabled, as determined by the BackupRetentionPeriod parameter. Changing this parameter does not result in an outage and the change is asynchronously applied as soon as possible.

Amazon Aurora

Not applicable. The daily time range for creating automated backups is managed by the DB cluster. For more information, see ModifyDBCluster.

Constraints:

  • Must be in the format hh24:mi-hh24:mi

  • Times should be in Universal Time Coordinated (UTC)

  • Must not conflict with the preferred maintenance window

  • Must be at least 30 minutes

Public Property PreferredMaintenanceWindow System.String

Gets and sets the property PreferredMaintenanceWindow.

The weekly time range (in UTC) during which system maintenance can occur, which might result in an outage. Changing this parameter does not result in an outage, except in the following situation, and the change is asynchronously applied as soon as possible. If there are pending actions that cause a reboot, and the maintenance window is changed to include the current time, then changing this parameter will cause a reboot of the DB instance. If moving this window to the current time, there must be at least 30 minutes between the current time and end of the window to ensure pending changes are applied.

Default: Uses existing setting

Format: ddd:hh24:mi-ddd:hh24:mi

Valid Days: Mon | Tue | Wed | Thu | Fri | Sat | Sun

Constraints: Must be at least 30 minutes

Public Property PromotionTier System.Int32

Gets and sets the property PromotionTier.

A value that specifies the order in which an Aurora Replica is promoted to the primary instance after a failure of the existing primary instance. For more information, see Fault Tolerance for an Aurora DB Cluster.

Default: 1

Valid Values: 0 - 15

Public Property PubliclyAccessible System.Boolean

Gets and sets the property PubliclyAccessible.

Boolean value that indicates if the DB instance has a publicly resolvable DNS name. Set to True to make the DB instance Internet-facing with a publicly resolvable DNS name, which resolves to a public IP address. Set to False to make the DB instance internal with a DNS name that resolves to a private IP address.

PubliclyAccessible only applies to DB instances in a VPC. The DB instance must be part of a public subnet and PubliclyAccessible must be true in order for it to be publicly accessible.

Changes to the PubliclyAccessible parameter are applied immediately regardless of the value of the ApplyImmediately parameter.

Default: false

Public Property StorageType System.String

Gets and sets the property StorageType.

Specifies the storage type to be associated with the DB instance.

Valid values: standard | gp2 | io1

If you specify io1, you must also include a value for the Iops parameter.

Default: io1 if the Iops parameter is specified; otherwise standard

Public Property TdeCredentialArn System.String

Gets and sets the property TdeCredentialArn.

The ARN from the Key Store with which to associate the instance for TDE encryption.

Public Property TdeCredentialPassword System.String

Gets and sets the property TdeCredentialPassword.

The password for the given ARN from the Key Store in order to access the device.

Public Property VpcSecurityGroupIds System.Collections.Generic.List<System.String>

Gets and sets the property VpcSecurityGroupIds.

A list of EC2 VPC security groups to authorize on this DB instance. This change is asynchronously applied as soon as possible.

Amazon Aurora

Not applicable. The associated list of EC2 VPC security groups is managed by the DB cluster. For more information, see ModifyDBCluster.

Constraints:

  • Must be 1 to 255 alphanumeric characters

  • First character must be a letter

  • Cannot end with a hyphen or contain two consecutive hyphens

Version Information

.NET Standard:
Supported in: 1.3

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms