12.You performed the RMAN database backup having a backupset key number 231 with the KEEP FOREVER option.
After some days, you want to change the status of the database backup and you issued the following command:
RMAN>CHANGE BACKUPSET 231 NOKEEP;
What is the implication of this command?
A. The backup is deleted.
B. The backup is marked unavailable.
C. The backup overrides the backup retention policy.
D. the backup becomes eligible for deletion according to the existing retention policy
Answer: D
参考：http://docs.oracle.com/cd/E11882_01/backup.112/e10643/rcmsubcl011.htm#RCMRF90453
你执行RMAN数据库备份带一个键号231的、永远保持选项的备份集。过了些日子，你要更改的数据库备份的状态，并发出以下命令：
D、根据现有保留政策，备份够资格删除
After some days, you want to change the status of the database backup and you issued the following command:
RMAN>CHANGE BACKUPSET 231 NOKEEP;
What is the implication of this command?
A. The backup is deleted.
B. The backup is marked unavailable.
C. The backup overrides the backup retention policy.
D. the backup becomes eligible for deletion according to the existing retention policy
Answer: D
参考：http://docs.oracle.com/cd/E11882_01/backup.112/e10643/rcmsubcl011.htm#RCMRF90453
你执行RMAN数据库备份带一个键号231的、永远保持选项的备份集。过了些日子，你要更改的数据库备份的状态，并发出以下命令：
D、根据现有保留政策，备份够资格删除
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/81227/viewspace-2123380/ ，如需转载，请注明出处，否则将追究法律责任。
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