单项选择题
Which of the following dynamic view would you query to identify the online CURRENT redo log group？（）
A.V$LOG
B.V$LOFHIST
C.V$LOGFILE
D.V$LOG_HISTORY
单项选择题 WhichdynamicperformanceviewdisplaystheinformationaboutthefilesassociatedwiththelocallymanagedtemporarytablespacesinOracle9i？（）
单项选择题 RMANenablesyoutoopenthetargetdatabasewhenitisalreadymounted.WhichcommandmustyouexecuteattheRMANprompttoopenthedatabase？（）
单项选择题 Whichofthefollowingcommandscannotbeexecutedwhenthedatabaseopen？（）