OCP-1Z0-053-V12.02-510题

510.You executed the following command in Recovery Manager (RMAN):

RMAN> REPORT NEED BACKUP days 3;

What is the output of this command?

A. a list of files that require a backup within three days

B. a list of files requiring more than 3 days of archive logs to apply

C. a list of files that RMAN recommends be backed up only once in every three days, based on low

volatility

D. a list of files for which a backup has already been performed in the last three days and which is

required to be backed up again based on the high number of transactions performed on them

Answer: A

答案解析：

RMAN> REPORT NEED BACKUP days 3;

using target database control file instead of recovery catalog

Report of files whose recovery needs more than 3 days of archived logs

File Days Name

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

Using RMAN REPORT NEED BACKUP with Different Retention Policies

You can specify different criteria for REPORTNEEDBACKUP, using one of the following forms of the command:

• REPORT NEED BACKUP RECOVERYWINDOWOFn DAYS

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

• REPORT NEED BACKUP REDUNDANCYn

  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 INCREMENTALn

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

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

根据官网，此题应选B

在200题库里，此题答案为B