Request Parameters Response Elements Errors Examples See Also

ModifyDBParameterGroup

Modifies the parameters of a DB parameter group. To modify more than one parameter, submit a list of the following: ParameterName, ParameterValue, and ApplyMethod. A maximum of 20 parameters can be modified in a single request.

Important

After you modify a DB parameter group, you should wait at least 5 minutes before creating your first DB instance that uses that DB parameter group as the default parameter group. This allows Amazon RDS to fully complete the modify operation before the parameter group is used as the default for a new DB instance. This is especially important for parameters that are critical when creating the default database for a DB instance, such as the character set for the default database defined by the character_set_database parameter. You can use the Parameter Groups option of the Amazon RDS console or the DescribeDBParameters command to verify that your DB parameter group has been created or modified.

Request Parameters

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

DBParameterGroupName

The name of the DB parameter group.

Constraints:

If supplied, must match the name of an existing DBParameterGroup.

Type: String

Required: Yes

Parameters.Parameter.N

An array of parameter names, values, and the application methods for the parameter update. At least one parameter name, value, and application method must be supplied; later arguments are optional. A maximum of 20 parameters can be modified in a single request.

Valid Values (for the application method): immediate | pending-reboot

You can use the immediate value with dynamic parameters only. You can use the pending-reboot value for both dynamic and static parameters.

When the application method is immediate, changes to dynamic parameters are applied immediately to the DB instances associated with the parameter group.

When the application method is pending-reboot, changes to dynamic and static parameters are applied after a reboot without failover to the DB instances associated with the parameter group.

Note

You can't use pending-reboot with dynamic parameters on RDS for SQL Server DB instances. Use immediate.

For more information on modifying DB parameters, see Working with DB parameter groups in the Amazon RDS User Guide.

Type: Array of Parameter objects

Required: Yes

Response Elements

The following element is returned by the service.

DBParameterGroupName

The name of the DB parameter group.

Type: String

Errors

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

DBParameterGroupNotFound

DBParameterGroupName doesn't refer to an existing DB parameter group.

HTTP Status Code: 404

InvalidDBParameterGroupState

The DB parameter group is in use or is in an invalid state. If you are attempting to delete the parameter group, you can't delete it when the parameter group is in this state.

HTTP Status Code: 400

Examples

Example

This example illustrates one usage of ModifyDBParameterGroup.

Sample Request



https://rds.us-east-1.amazonaws.com/
   ?Action=ModifyDBParameterGroup
   &DBParameterGroupName=mydbparametergroup01
   &Parameters.member.1.ApplyMethod=immediate
   &Parameters.member.1.ParameterName=binlog_cache_size
   &Parameters.member.1.ParameterValue=65536
   &SignatureMethod=HmacSHA256
   &SignatureVersion=4
   &Version=2014-10-31
   &X-Amz-Algorithm=AWS4-HMAC-SHA256
   &X-Amz-Credential=AKIADQKE4SARGYLE/20140425/us-east-1/rds/aws4_request
   &X-Amz-Date=20140425T193811Z
   &X-Amz-SignedHeaders=content-type;host;user-agent;x-amz-content-sha256;x-amz-date
   &X-Amz-Signature=afd9acfee876360dd294189465aca26502343d405292dc6e43b1961ad4d1d7e2

Sample Response



<ModifyDBParameterGroupResponse xmlns="http://rds.amazonaws.com/doc/2014-10-31/">
  <ModifyDBParameterGroupResult>
    <DBParameterGroupName>mydbparametergroup01</DBParameterGroupName>
  </ModifyDBParameterGroupResult>
  <ResponseMetadata>
    <RequestId>12d7435e-bba0-11d3-fe11-33d33a9bb7e3</RequestId>
  </ResponseMetadata>
</ModifyDBParameterGroupResponse>