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）.（）

单项选择题 A database is running In ARCHIVBXXMS mode. It has two online redo log groups and each group has one member.  A LGWR Input/output （I/O） fells due to permanent media failure that has resulted In the loss of redo log file and the LWGR terminates causing the instance to crash. The steps to recover from the loss of a current redo log group member in the random order are as follow.   1） Restore the corrupted redo log group. 2） Restore from a whole database backup.  3） Perform incomplete recovery.  4） Relocate by renaming the member of the damaged online redo log group to a new location.  5） Open the database with the RESETLOGS option.  6） Restart the database instance.  7） Issue a checkpoint and clear the log.   Identify the option with the correct sequential steps to accomplish the task efficiently（）.