题目内容:
Youareworkingonanonlinetransactionprocessing(OLTP)system.YounoticethataPL/SQLproceduregotexecutedtwiceat2)00p.m.ThishasincorrectlyupdatedtheEMP_SALtable.Howwouldyourevertthetabletoitsstateat2)00p.m.?()
A.Performpoint-in-timerecoveryto2:00p.m.
B.UseFlashbackTablefeaturetorevertthechanges.
C.Restoretheentiredatabasefromtherecentbackupandopenit.
D.Issuetherollbackstatementwithsystemchangenumber(SCN).
参考答案:【答案仅供学习,请勿对照自行用药等】