12C-OCP升级1z-060-019

Your multitenant container database (CDB) is running in ARCHIVELOG mode. You

connect to the CDB RMAN.
Examine the following command and its output

:


You execute the following command:

RMAN > BACKUP DATABASE PLUS ARCHIVELOG;

Which data files will be backed up?

A. Data files that belong to only the root container

B. Data files that belong to the root container and all the pluggable databases (PDBs)

C. Data files that belong to only the root container and PDB$SEED

D. Data files that belong to the root container and all the PDBs excluding PDB$SEED

Answer: B

Explanation: Backing Up a Whole CDB

Backing up a whole CDB is similar to backing up a non-CDB. When you back up a whole

CDB, RMAN backs up the root, all the PDBs, and the archived redo logs. You can then

recover either the whole CDB, the root only, or one or more PDBs from the CDB backup.

Note:

* You can back up and recover a whole CDB, the root only, or one or more PDBs.

* Backing Up Archived Redo Logs with RMAN

Archived redo logs are the key to successful media recovery. Back them up regularly. You can back up logs with BACKUP ARCHIVELOG, or back up logs while backing up datafiles and control files by specifying BACKUP ... PLUS ARCHIVELOG.

我们需要知道的是，多租户的数据库，在进行备份的，只能在整个CDB级别进行备份，不能够对PDB级别进行备份，而且，即使PDB并没有在OPEN的状态，Oracle一样是可以进行备份的。