单选题What is the end result of these commands if they are successful？（） RMAN show retention policy； RMAN configuration parameters for database with db_unique_name ORCL are： CONFIGURE RETENTION POLICY TO REDUNDANCY 1； # default Backup database tag=gold_copy plus archivelog tag=gold_copy delete input； Backup database tag=silver_copy plus archivelog tag=silver_copy delete input；A Attempting to restore silver_copy will fail.B Attempting to restore gold_copy will fail.C Both backups will be available for restore without question.D Attempting to restore gold_copy may or may not succeed.E You will not be able to restore either gold_copy or silver_copy.
单选题
What is the end result of these commands if they are successful？（） RMAN> show retention policy； RMAN configuration parameters for database with db_unique_name ORCL are： CONFIGURE RETENTION POLICY TO REDUNDANCY 1； # default Backup database tag=gold_copy plus archivelog tag=gold_copy delete input； Backup database tag=silver_copy plus archivelog tag=silver_copy delete input；
A
Attempting to restore silver_copy will fail.
B
Attempting to restore gold_copy will fail.
C
Both backups will be available for restore without question.
D
Attempting to restore gold_copy may or may not succeed.
E
You will not be able to restore either gold_copy or silver_copy.
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单选题In Recovery Manager （RMAN）， you set the retention policy to NONE by executing the following command： CONFIGURE RETENTION POLICY TO NONE; What would be the impact of this setting？（）AThe retention policy is cleared.BRMAN does not consider any backup as obsolete.CThe retention policy is set to its default setting of redundancy 1.DThe retention policy is set to its default setting of recovery window 7.
单选题You defined the Recovery Manager （RMAN） retention policy to recovery window of 7 days by executing the following command： RMAN CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS； When a backup is performed， what would be the status of this backup after seven days？（）A The backup would be marked as invalid.B The backup would be marked as obsolete.C The backup would be removed from the media.D The backup would be removed from the RMAN repository.
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