Setting the default edition for a DB instance - Amazon Relational Database Service
This documentation is a draft for private preview for regions in the AWS European Sovereign Cloud. Documentation content will continue to evolve. Published: January 10, 2026.

Setting the default edition for a DB instance

You can redefine database objects in a private environment called an edition. You can use edition-based redefinition to upgrade an application's database objects with minimal downtime.

You can set the default edition of an Amazon RDS Oracle DB instance using the Amazon RDS procedure rdsadmin.rdsadmin_util.alter_default_edition.

The following example sets the default edition for the Amazon RDS Oracle DB instance to RELEASE_V1. 

EXEC rdsadmin.rdsadmin_util.alter_default_edition('RELEASE_V1');

The following example sets the default edition for the Amazon RDS Oracle DB instance back to the Oracle default. 

EXEC rdsadmin.rdsadmin_util.alter_default_edition('ORA$BASE');

For more information about Oracle edition-based redefinition, see About editions and edition-based redefinition in the Oracle documentation.