QUESTION 109
You executed the following command in the 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 3 days
B. A list of files requiring more than 3 days of archivelogs 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 as already beenperformed 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: B
同510题：http://blog.csdn.net/rlhua/article/details/12363701
此题应选B，而711题库选A，所以711题库答案错误。
Explanation/Reference:
Section: Backup, Recovery & Recovery Manager (RMAN)
http://download.oracle.com/docs/cd/B10501_01/server.920/a96566/rcmquery.htm#442383
To override the retention policy (or if you do not have a retention policy enabled), run REPORT NEED BACKUP
DAYS. Any files older than the DAYSparameter value need a new backup because their backups require the
specified number of DAYSworth of archived logs for recovery.