052题库解析最新16道题052-题库解析-5-20180608题库新特点:更加灵活,题库的顺序与考试时的顺序每场都在变化更加考验知识点的掌握,题库答案为二,考试时要求选择最佳一个答案不断有新的考题出现,目前最新已经更新到130道题每周五晚8点-直播地址:ke.qq.com/course/326223ocp考试讨论群:836361015验证:ocpCUUG整理,官网:www.cuug.com1、Whichthreearetrueaboutundosegmentsandundotablespacesinthesamedatabaseandinstance?•A.MultipletransactionsrunbythesameOracleusercanshareasingleundosegment.•B.MultipletransactionsrunbydifferentOracleuserscanshareasingleundosegment.•C.Aserialtransactioncanusemultipleundosegments.•D.Undosegmentsareautomaticallydroppedshortlyaftertransactionsthatusethemcommit.•E.Anewundosegmentisalwayscreatedforeachtransaction.ﻭ•F.Adatabasecanhavemultipleundotablespaces.ﻭ•CorrectAnswer:ABF2、WhichtwoaretrueabouttheDataRecoveryAdvisor?•A.ItcanbeusedonlyfordatabasesthatarerunninginARCHIVELOGmode.•B.Itcanbeusedwhenthedatabaseisclosed.ﻭ•C.Itcanbeusedtovalidatedatabaserecoverystrategies.ﻭ•D.Itprovidesintelligentdatabaseproblemanalysis.•E.Itcanbeusedtovalidatedatabasebackupstrategies.•F.ItcanbeusedonlyfordatabaseswithFLASHBACKenabled.ﻭ•CorrectAnswer:CD3、WhichtwoaretrueaboutOracleDataPumpinOracleDatabase11gRelease2?•A.Ifthedirectoryusedintheexportoperationhasexistingdumpfiles,itoverwritesthem.•B.Itallowsencryptiontobeperformedwithoutusingapassword.•C.Itsupportstherenamingoftablesduringimport.ﻭ•D.Itsupportstheexportofspecificviewsastables.•E.Itallowscompressionlevelstobedefinedfortheexport.•CorrectAnswer:BE4、ForyourORCLdatabase.1.Theinstanceisstartedusinganspfile.2.Thedatabaseisopened.3.ItisinARCHIVELOGmode.4.CONTROLFILEAUTOBACKUPISON.Examinethiscommand:RMAN>backupascopydatafile‘users01.dbf’,’example01.dbf’;Whichfourfilesarebackedup?•A.spfile•B.undo01.dbf•C.users01.dbf•D.archivelogs•E.sysaux01.dbf•F.controlfile•G.system01.dbf•H.example01.dbfCorrectAnswer:ACFH5、Whendoesanincrementalcheckpointoccur?ﻭ•A.whenDBWnwritesdirtybuffersaspartofitsnormalprocessﻭ•B.whenthealtersystemcheckpointstatementisexecuted.ﻭ•C.whenausertablespaceistakenoffline•D.whenanonlineredologswitchoccurs•CorrectAnswer:A6、Examinethisqueryanditsoutput:Whichtwoaretrue?•A.Theblockedsessioniswaitingonasharedtablelock.ﻭ•B.Theblockedsessioniswaitingonanenqueue.•C.Theblockingsessioniswaitingonarow-levellock.•D.Session105isblockedbysession15.•E.Session105isblockingsession15.•CorrectAnswer:BD•7、Inoneofyourdatabases:1.USER1andUSER2havenosystemprivileges.2.ROLE1onlyhastheseprivileges:ﻭ*createsession*createtable*createviewExaminethesecommands:7Whichcommandwouldyouexecuteandaswhichuser,torevokethecreatetableprivilegefromUSER2?•A.Revokecreatetablefromuser2asuser1•B.Revokecreatetablefromuser...