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 isn't in a VPC, you can also use this parameter to move your DB instance into a VPC. For more information, see Working with a DB instance in a VPC in the Amazon RDS User Guide.

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

This parameter doesn't apply to RDS Custom DB instances.

Constraints:

• If supplied, must match existing DB subnet group.

Example: mydbsubnetgroup