How to change the DB_UNIQUE_NAME in a RAC database

1) Remove the database, instance and service resources from CRS, this does NOT affect database itself. $ srvctl stop database -d orcl $ srvctl remove database -d orcl   2) Start the database and change the db_unique_name at database level. SQL> Startup; SQL> alter system set db_unique_name=orcl_test scope=spfile sid=’*’; SQL> alter system set db_domain=test.us.oracle.com scope=spfile […]