272.You issue the following RMAN command to set a retention policy on a database:
RMAN>CONFIGURE RETENTION POLICY TO REDUNDANCY 2;
What will be the outcome of issuing this command?
A. After two days, a backup will be marked obsolete
B. After two days, a backup will be deleted from the media
C. If the RMAN repository has records of two or more recent backups of a file, then older backups will be deleted from the media.
D. If the RMAN repository has records of two or more recent backups of a file, then older backups will be marked obsolete.
Answer: D
参考：http://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmconfb.htm#i1019345
如果RMAN信息库有一个文件的两个或更多的最近备份的记录，那么旧的备份将被标记为过时。
RMAN>CONFIGURE RETENTION POLICY TO REDUNDANCY 2;
What will be the outcome of issuing this command?
A. After two days, a backup will be marked obsolete
B. After two days, a backup will be deleted from the media
C. If the RMAN repository has records of two or more recent backups of a file, then older backups will be deleted from the media.
D. If the RMAN repository has records of two or more recent backups of a file, then older backups will be marked obsolete.
Answer: D
参考：http://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmconfb.htm#i1019345
如果RMAN信息库有一个文件的两个或更多的最近备份的记录，那么旧的备份将被标记为过时。
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/81227/viewspace-2123696/ ，如需转载，请注明出处，否则将追究法律责任。
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