338.You run the following commands:
RMAN> list expired backup;
RMAN> delete expired backup;
What will happen to the backup set pieces associated with the backups that appear in the list expired backup command?
A. They will be renamed.
B. Nothing will happen to them. The backup set pieces do not exist.
C. They will be deleted immediately since they are not in the flash recovery area.
D. You will need to manually remove the physical files listed in the output of the commands.
E. They will become hidden files and removed 10 days later.
Answer: B
题意是：在 list expired backup命令中出现的备份集相关的备份集碎片会发生什么情况？
RMAN备份集一般有三种状态：
Available：备份集是可用的；
RMAN> list expired backup;
RMAN> delete expired backup;
What will happen to the backup set pieces associated with the backups that appear in the list expired backup command?
A. They will be renamed.
B. Nothing will happen to them. The backup set pieces do not exist.
C. They will be deleted immediately since they are not in the flash recovery area.
D. You will need to manually remove the physical files listed in the output of the commands.
E. They will become hidden files and removed 10 days later.
Answer: B
题意是：在 list expired backup命令中出现的备份集相关的备份集碎片会发生什么情况？
RMAN备份集一般有三种状态：
Available：备份集是可用的；
obsolete：与retention policy相关，当备份或者副本根据保存策略而被丢弃的时候，就会被标记为该状态。比如你设置恢复窗口为7天，今天10号，那2号之前（包括2号）的都被认为是“过期的”。
expired：使用crosscheck对备份进行校验，当备份或者副本被存储在rman目录中，但是并没有物理存在于备份介质上时，就会被标记为该状 态；在操作系统层删除备份集后，用crosscheck 检测后就标志为X（expired）。通常指丢失（被删除）的备份。
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/81227/viewspace-2121779/ ，如需转载，请注明出处，否则将追究法律责任。
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