319.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.
正确答案是D