ModifyReplicationConfig - AWS Database Migration Service


Modifies an existing AWS DMS Serverless replication configuration that you can use to start a replication. This command includes input validation and logic to check the state of any replication that uses this configuration. You can only modify a replication configuration before any replication that uses it has started. As soon as you have initially started a replication with a given configuiration, you can't modify that configuration, even if you stop it.

Other run statuses that allow you to run this command include FAILED and CREATED. A provisioning state that allows you to run this command is FAILED_PROVISION.

Request Syntax

{ "ComputeConfig": { "AvailabilityZone": "string", "DnsNameServers": "string", "KmsKeyId": "string", "MaxCapacityUnits": number, "MinCapacityUnits": number, "MultiAZ": boolean, "PreferredMaintenanceWindow": "string", "ReplicationSubnetGroupId": "string", "VpcSecurityGroupIds": [ "string" ] }, "ReplicationConfigArn": "string", "ReplicationConfigIdentifier": "string", "ReplicationSettings": "string", "ReplicationType": "string", "SourceEndpointArn": "string", "SupplementalSettings": "string", "TableMappings": "string", "TargetEndpointArn": "string" }

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.


Configuration parameters for provisioning an AWS DMS Serverless replication.

Type: ComputeConfig object

Required: No


The Amazon Resource Name of the replication to modify.

Type: String

Required: Yes


The new replication config to apply to the replication.

Type: String

Required: No


The settings for the replication.

Type: String

Required: No


The type of replication.

Type: String

Valid Values: full-load | cdc | full-load-and-cdc

Required: No


The Amazon Resource Name (ARN) of the source endpoint for this AWS DMS serverless replication configuration.

Type: String

Required: No


Additional settings for the replication.

Type: String

Required: No


Table mappings specified in the replication.

Type: String

Required: No


The Amazon Resource Name (ARN) of the target endpoint for this AWS DMS serverless replication configuration.

Type: String

Required: No

Response Syntax

{ "ReplicationConfig": { "ComputeConfig": { "AvailabilityZone": "string", "DnsNameServers": "string", "KmsKeyId": "string", "MaxCapacityUnits": number, "MinCapacityUnits": number, "MultiAZ": boolean, "PreferredMaintenanceWindow": "string", "ReplicationSubnetGroupId": "string", "VpcSecurityGroupIds": [ "string" ] }, "ReplicationConfigArn": "string", "ReplicationConfigCreateTime": number, "ReplicationConfigIdentifier": "string", "ReplicationConfigUpdateTime": number, "ReplicationSettings": "string", "ReplicationType": "string", "SourceEndpointArn": "string", "SupplementalSettings": "string", "TableMappings": "string", "TargetEndpointArn": "string" } }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.


Information about the serverless replication config that was modified.

Type: ReplicationConfig object


For information about the errors that are common to all actions, see Common Errors.


AWS DMS was denied access to the endpoint. Check that the role is correctly configured.

HTTP Status Code: 400


The resource is in a state that prevents it from being used for database migration.

HTTP Status Code: 400


The subnet provided isn't valid.

HTTP Status Code: 400


AWS DMS cannot access the KMS key.

HTTP Status Code: 400


The replication subnet group does not cover enough Availability Zones (AZs). Edit the replication subnet group and add more AZs.

HTTP Status Code: 400


The resource could not be found.

HTTP Status Code: 400



This example illustrates one usage of ModifyReplicationConfig.

Sample Request

POST / HTTP/1.1 Host: dms.<region>.<domain> x-amz-Date: <Date> Authorization: AWS4-HMAC-SHA256 Credential=<Credential>, SignedHeaders=contenttype;date;host;user-agent;x-amz-date;x-amz-target;x-amzn-requestid,Signature=<Signature> User-Agent: <UserAgentString> Content-Type: application/x-amz-json-1.1 Content-Length: <PayloadSizeBytes> Connection: Keep-Alive X-Amz-Target: AmazonDMSv20160101.ModifyReplicationConfig { "ReplicationConfigIdentifier":"test-replication-config", "ReplicationConfigArn":"arn:aws:dms:us-east-1:123456789012:replication-config:UX6OL6MHMMJKFFOXE3H7LLJCMEKBDUG4ZV7DRSI" }

Sample Response

HTTP/1.1 200 OK x-amzn-RequestId: <RequestId> Content-Type: application/x-amz-json-1.1 Content-Length: <PayloadSizeBytes> Date: <Date> { "ReplicationConfig":"{ "ReplicationConfigIdentifier":"test-replication-config", "ReplicationConfigArn":"arn:aws:dms:us-east- 1:123456789012:replication-config:UX6OL6MHMMJKFFOXE3H7LLJCMEKBDUG4ZV7DRSI", "SourceEndpointArn":"arn:aws:dms:us-east- 1:123456789012:endpoint:RZZK4EZW5UANC7Y3P4E776WHBE", "TargetEndpointArn":"arn:aws:dms:us-east- 1:123456789012:endpoint:GVBUJQXJZASXWHTWCLN2WNT57E", "ReplicationConfigCreateTime":1677683717.524, "TableMappings":"{\n \"TableMappings\": [\n {\n \"Type\": \"Include\",\n \"SourceSchema\": \"/\", \n \"SourceTable\": \"/ \"\n }\n ]\n }\n\n", "ReplicationTaskSettings":"{\"TargetMetadata\": {\"TargetSchema\":\"\",\"SupportLobs\":true,\"FullLobMode\": true,\"LobChunkSize\":64,\"LimitedSizeLobMode\": false,\"LobMaxSize\":0 }, \"FullLoadSettings\":{ \"FullLoadEnabled\":true, \"TargetTablePrepMode\":\"DROP_AND_CREATE\", \"CreatePkAfterFullLoad\":false, \"StopTaskCachedChangesApplied\":false, \"StopTaskCachedChangesNotApplied\":false, \"ResumeEnabled\":false, \"ResumeMinTableSize\":100000, \"ResumeOnlyClusteredPKTables\":true, \"MaxFullLoadSubTasks\":8, \"TransactionConsistencyTimeout\":600, \"CommitRate\":10000 }, \"Logging\":{ \"EnableLogging\":false } }" }" }

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: