Using the command shown here， what time format must you specify to recover the database until a point-in-time？（） 
SQL> RECOVER DATABASE UNTIL TIME ’<time format>’；

单项选择题WhichofthefollowingstatementsisNOTtrueaboutRMAN？（）

A.It improves usability by enabling you to reuse the scripts to perform recovery operations.
B.It detects block corruption while restoration and recovery operations.
C.It enables you to perform block media recovery.
D.It is capable to recover through unrecoverable operations， with only full database backups.

单项选择题Whichofthefollowingwouldyouusetoenableautomaticmediarecoveryforadatabase？（）

A.SET AUTORECOVERY ON
B.SET RECOVERY ON
C.SET AUTO ON
D.You cannot enable automatic media recovery.

单项选择题Whichofthefollowingshutdownoptionsshouldnotbeusedbeforeperformingaconsistentwholedatabasebackup？（）

A.NORMAL
B.TRANSACTIONAL
C.ABORT
D.IMMEDIATE
E.INCONSISTENT

单项选择题WhichofthefollowingcommandscannotusethefunctionalityassosciatedwiththeNLS_DATE_FORMATvariable？（）

A.RESTORE
B.RECOVER
C.REPORT
D.BACKUP

单项选择题WhatisthemaximumnumberofARCnprocessesthatcanbedefinedusingtheinitializationparameterLOG_ARCHIVE_MAX_PROCESSES？（）

A.1
B.5
C.10
D.15
E.Depends on system memory resources