To perform backup and recovery operations on a whole multitenant container database (CDB), you connect as TARGET to the root. The connection must be established as a user with the SYSDBA or SYSBACKUP privilege.
You can connect to the root in one of the following ways:
Connect using operating system authentication
You are connected to the root as the SYS user with the SYSDBA privilege.
Connect locally as a common user
Connect as a common user through Oracle Net Services
After you connect to the root, the same commands that are used to perform operations on non-CDBs are used to perform backup and recovery operations on the entire CDB.
The following sections in the Oracle Database Backup and Recovery User's Guide provide detailed information about backing up and recovering CDBs: