问答题

YouareworkingonanOracleDatabase10gdatabase.Becauseofdataloss，youdecidedtoperformaFlashbackDatabaseoperationusingthefollowingcommand：SQL>FLASHBACKDATABASETOTIMESTAMP（SYSDATE？5/24）；Whichtwostatementsaretrue？（）
A.SYSDATEshouldnotbeusedwithTIMESTAMP.
B.Thedatabasemusthavemultiplexedredologfiles.
C.ThedatabasemustbeintheMOUNTstatetoexecutethecommand.
D.ThedatabasemustbeopenedwiththeRESETLOGSoptionaftertheflashbackoperation.
E.Theentiredatabaseneedstoberestoredfromthemostrecentbackupbeforetheflashbackoperation.

A.Becauseofdataloss，youdecidedtoperformaFlashbackDatabaseoperationusingthefollowingcommand：SQL>FLASHBACKDATABASETOTIMESTAMP（SYSDATE？5/24）；Whichtwostatementsaretrue？（）
A.SYSDATEshouldnotbeusedwithTIMESTAMP.
B.Thedatabasemusthavemultiplexedredologfiles.
C.ThedatabasemustbeintheMOUNTstatetoexecutethecommand.
D.ThedatabasemustbeopenedwiththeRESETLOGSoptionaftertheflashbackoperation.
E.Theentiredatabaseneedstoberestoredfromthemostrecentbackupbeforetheflashbackoperation.

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