OCP 1Z0 053 47

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 

只有d说法最接近

http://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmquick.htm#BRADV89359

Reporting on Database Files and Backups

The REPORT command performs more complex analysis than LIST. Some main options are shown in Table 2-5.

Table 2-5 REPORT Options

OptionExampleExplanation

NEED BACKUP

REPORT NEED BACKUP DATABASE

Shows which files need backing up under current retention policy. Use optional REDUNDANCY and RECOVERY WINDOW parameters to specify different criteria.

OBSOLETE

REPORT OBSOLETE

Lists backups that are obsolete under the configured backup retention policy. Use the optional REDUNDANCY and RECOVERY WINDOWparameters to override the default.

SCHEMA

REPORT SCHEMA

Reports the tablespaces and data files in the database at the current time (default) or a different time.

UNRECOVERABLE

REPORT UNRECOVERABLE

Lists all data files for which an unrecoverable operation has been performed against an object in the data file since the last backup of the data file.