Start Oracle Database Configuration Assistant (Oracle DBCA) in GUI mode to create and manage Oracle RAC databases.

1. Log in as the software installation owner user, for example oracle.
2. Start Oracle DBCA by running the following command:

   $ $ORACLE_HOME/bin/dbca

   Note:

   You no longer need to set the operating system environment variables ORACLE_HOME to the Oracle RAC database home, or ORACLE_UNQNAME to the database unique name.