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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