YourdatabaseisinARCHIVELOGmode.Youlostanindextablespaceduetoadiskfailurewhilethedatabasewasopen.YouhaveneitherabackupofthelostindextablespacenorthescriptscontainingtheCREATEINDEXstatementstorecreatetheindexes.Currently，severalusersareexecutinglong-running
题目
YourdatabaseisinARCHIVELOGmode.Youlostanindextablespaceduetoadiskfailurewhilethedatabasewasopen.YouhaveneitherabackupofthelostindextablespacenorthescriptscontainingtheCREATEINDEXstatementstorecreatetheindexes.Currently，severalusersareexecutinglong-runningqueriesonthedatabase.Whatwillhappentotheongoingactivityinthedatabase？（）
A.Thequeriesthatarecurrentlyexecutingwillabortandanerrormessagewillbereturnedtotheuser.
B.Thequeriesthatarecurrentlyexecutingwillexecutenormallybutfuturequerieswillnotexecuted.
C.DataManipulationLanguage（DML）statementscannotbeperformedonthetablesonwhichtheindexesarebased.
D.Thecurrentlyexecutingandfuturequerieswillexecutenormally，butwillbeslower