OCP-1Z0-053-V12.02-47题

47.You issue the following command on the RMAN prompt.

REPORT NEED BACKUP DAYS 5;

Which statement is true about executing this command?

A. It will display a list of files that need incremental backup

B. It will display a list of files that need backup after five days

C. It will display a list of files that were backed up in the last five days

D. It will display a list of files that have not been backed up in the last five days

E. It will apply the current retention policy to determine the files that need to be backed up

Answer: D

答案解析：

参考官网：http://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmreprt.htm#sthref1040

即所列的文件在备份时需要5天以前的归档日志，也即是说5天内没有备份过。选D。

RMAN> REPORT NEED BACKUP DAYS 5;

using target database control file instead of recovery catalog

Report of files whose recovery needs more than 5 days of archived logs

File Days Name

---- ----- -----------------------------------------------------

Using RMAN REPORT NEED BACKUP with Different Retention Policies

You can specify different criteria for REPORT NEED BACKUP, using one of the following forms of the command:

• REPORT NEED BACKUP RECOVERY WINDOW OF n DAYS

  Displays objects requiring backup to satisfy a recovery window-based retention policy

• REPORT NEED BACKUP REDUNDANCY n

  Displays objects requiring backup to satisfy a redundancy-based retention policy

• REPORT NEED BACKUP DAYS n

  Displays files that require more than n days' worth of archived redo log files for recovery

• REPORT NEED BACKUP INCREMENTAL n

  Displays files that require application of more than n incremental backups for recovery