OCP-1Z0-053-V12.02-196题

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196.What is the purpose of the catalog command?

A. To review RMAN control file and recovery catalog metadata and ensure that its correct

B. To delete RMAN backup-related metadata from the recovery catalog

C. To create metadata in the control file and the recovery catalog related to backup set pieces

D. To create a report that lists database backups

E. To rebuild the recovery catalog

Answer: C

答案解析：

参考：http://blog.csdn.net/rlhua/article/details/13169205

目录命令的目的是在，控制文件和恢复目录中涉及到备份集片中创建元数据。

参考：http://docs.oracle.com/cd/E11882_01/backup.112/e10643/rcmsynta008.htm#RCMRF109

CATALOG

Purpose

Use the CATALOG command to do the following:

Add backup pieces and image copies on disk to the RMAN repository
Record a data file copy as a level 0 incremental backup in the RMAN repository, which enables you to use it as part of an incremental backup strategy