单项选择题 You configured the default backup device type as disk for RMAN backups. In your database，because of business requirements，you have to take a simultaneous duplicate backup of the data files when the RMAN BACKUP command is used.  What must you set using the RMAN CONFIGURE command to achieve this？（）

单项选择题 You are using Recovery Manager （RMAN） with a recovery catalog to back up your production database. The backups and the archived redo log files are copied to a tape drive on a daily basis. Because of media failure， you lost your production database completely along with the recovery catalog database. You want to recover the target database and make it functional. You could consider performing the following steps to accomplish this task：   1） Restore an autobackup of the server parameter file.  2） Restore the control file.  3） Start the target database Instance.  4） Mount the database. 5） Restore the data files.  6） Open the database with the RESETLOGS option.  7） Recover the data files.  8） Set DBID for the target database   Which option illustrates the correct sequence that you must use？（）

多项选择题 Identitytwoadvantagesofusingarecoverycatalogin-loadofthecontrolFileofthetargetdatabaseRecoveryManager（RMAN）.（）