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You work as a database administrator for Supportcenter.cn. You are using Recovery Manager （RMAN） for backup and recovery of your database. You executed the delete command in RMAN to delete a backup of a tablespace. Which statement is true in this scenario？（）
A:The backup status will be marked expired in RMAN recovery catalog.
B:The backup status will be marked deleted in RMAN recovery catalog after you execute the crosscheck command.
C:The backup will be deleted physically from the OS （Operating system）and the backup information is removed from the recovery catalogl
D:The backup status will be marked deleted and you must delete the backup file manually from the OS （Operating system）.
E:The backup status will be marked deleted and you must delete the backup file manually from the OS （Operating system）， if you are not using Oracle Managed Files （OMF）.

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出自：Oracle认证

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