单项选择题
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？（）
单项选择题 WhichofthefollowingcommandscannotusethefunctionalityassosciatedwiththeNLS_DATE_FORMATvariable？（）
单项选择题 WhatisthemaximumnumberofARCnprocessesthatcanbedefinedusingtheinitializationparameterLOG_ARCHIVE_MAX_PROCESSES？（）