A.YoucanrestoretheDEPTtablebyusingtheOracleFlashbackDropfeature,providedyouusetheRENAMETOclause.
B.YoucanrestoretheDEPTtablebyusingtheOracleFlashbackDropfeatureandasystem-generatednamewillbeassignedtotherestoredtable.
C.YoucannotrestoretheDEPTtablebyusingtheOracleFlashbackDropfeaturebecauseatablewiththenameDEPTalreadyexistsinyourschema.
D.YoucannotrestoretheDEPTtablebyusingtheOracleFlashbackDropfeaturebecausethecontentsoftherecyclebinarepurgedevery12hoursbydefault.
第1题:
YouaremaintainingthePRODdatabaseforNetFxCorporation.Youhaveconfiguredcontrolfileautobackupinyourdatabase.At6:00P.M.onMonday,youissuethefollowingcommand:RMAN>BACKUPDATABASE;At8:00A.M.onTuesday,youareunabletostartthedatabasebecauseallthecontrolfilesaremissing.YoudecidetorestorethecontrolfilesfromthebackupbyusingtheRMAN>RESTORECONTROLFILEFROMAUTOBACKUP;command.WhichoperationshouldyouperformbeforeusingtheRMAN>RESTORECONTROLFILEFROMAUTOBACKUP;command?()
第2题:
YourdatabaseisrunninginNOARCHIVELOGmodewithtwoonlineredologfiles.TheSALEStablecontainssalesinformationfortheorganization.TheSALEStablebelongstotheSALESTBtablespace.OnMonday,youinsert10rowsintotheSALEStable.Thecurrentlogsequencenumberis14.YouchangethetablespacestatusfromREADWRITEtoREADONLYfortheSALESTBtablespace.YoushutdownthedatabaseandtakeabackupoftheSALESTBtablespace.
OnTuesday,youstartthedatabase.YouchangethestatusfortheSALESTBtablespacefromREADONLYtoREADWRITE.Youinsert10morerowsintotheSALEStableandshutdownthedatabase.Thecurrentlogsequencenumberis15.
WhenyoutrytoopenthedatabaseonWednesdaymorning,youdiscoverthattheSALESTBtablespacewaslostbecauseofamediafailure.WhichofthefollowingoptionsistrueaboutrecoveringtheSALEStable?()
第3题:
Beth: Did you hear that Ron was in the hospital?
Mimi: Oh, really?( 56 ) with him?
Beth: He's got a very high temperature. I guess it may be cholera (霍乱).
Mimi: Cholera! How in the world did( 57 ) ?
Beth: Who knows?!
Mimi: ( 58 ) for a long time?
Beth: For a couple of weeks, apparently. But he only( 59 ) on Monday.
Mimi: Why did he wait so long? He should have seen a doctor earlier.
Beth: Yes, I know. But luckily the doctor says if he stays in the hospital for a few weeks, be should be able to improve.
Mimi: Gee,( 60 ) .
A. it come
B. I hope so
C. he get that
D. was sick
E. What’ s the matter
F. What happened
G. Has he been sick
H. went to see the doctor
第4题:
YouareworkingasaDBAinacompany.Thedatafilesinthedatabaseareasfollows:OnMonday,youtriedtostartupthedatabasebutfailedbecauseallthecontrolfilesweremissing.YourecreatedthecontrolfileusingthescriptyouhavecreatedbyissuingtheALTERDATABASEBACKUPCONTROLFILETOTRACEcommand.Whatistheprerequisiteforrecreatingthecontrolfile?()
A.AllthedatafilesshouldbelistedintheCREATECONTROLFILEstatement.
B.TheDATA2.dbfandDATA3.dbfdatafilesshouldbelistedintheCREATECONTROLFILEstatement.
C.TheSYSTEM01.dbfdatafileshouldbelistedintheCREATECONTROLFILEstatement.
D.TheSYSAUX01.dbfdatafileshouldbelistedintheCREATECONTROLFILEstatement.
第5题:
YourdatabaseisinARCHIVELOGmode.OnFridayevening,youperformanonlinedatabasebackupbyusingtheBACKUPDATABASEcommandattheRecoveryManager(RMAN)promptandclosethe
database.OnMonday,theSystemAdministratorinformsyouaboutthefailureoftwoharddisks.Oneofthelostdiskscontainstwodatafiles,HR1.DBFandHR2.DBF,bothofwhichbelongtoaread/writetablespacenamedHR.Thediskalsocontainsadatafile,USERS.DBF,whichbelongstoaread/writetablespacenamedUSERS.YouneedtorestoreandrecoverthedatabasebackupthatwasperformedonFridayevening.Aftermountingthedatabase,youissuethefollowingRMANcommands:
RMAN>RESTOREDATABASE;
RMAN>RECOVERDATABASE;
AftersuccessfullyexecutingtheseRMANcommands,youissuethefollowingstatementusingSQL*Plus:
SQL>ALTERDATABASEOPEN;
Youreceivethefollowingerrorswhenattemptingtoopenthedatabase:
ORA-01157:cannotidentify/lockdatafile10seeDBWRtracefile
ORA-01110:datafile10:’D:\USERS.DBF’
Whatisthecauseoftheseerrors?()