考题
On Friday at 11:30 am you decided to flash back the database because of a user error that occurred at 8:30 am. Which option must you use to check whether a flashback operation can recover the database to the specified time? ()A. Check the alert log fileB. Query the V$FLASHBACK_DATABASE_LOG viewC. Query the V$RECOVERY_FILE_DEST_SIZE viewD.Query the V$FLASHBACK_DATABASE_STAT viewE. Check the value assigned for the UNDO_RETENTION parameter
考题
Youexecutedthefollowingqueryinyourdatabase:FROMV$FLASHBACK_DATABASE_LOGWhatwouldyoudeterminefromtheoutput?()
A.thetimewhenthelastflashbackoperationinyourdatabasewasperformedB.thetimewhenthefirstflashbackoperationinyourdatabasewasperformedC.alistofflashbackoperationsperformedinyourdatabaseusingSCNandtimeD.theapproximatetimeandthelowestsystemchangenumber(SCN)towhichyoucanflashbackyourdatabase
考题
ThesearethedetailsaboutV$FLASHBACK_DATABASE_STAT:SQLDESCV$FLASHBACK_DATABASE_STATNameNull?Type-----------------------------------BEGIN_TIMEDATEEND_TIMEDATEFLASHBACK_DATANUMBERDB_DATANUMBERREDO_DATANUMBERESTIMATED_FLASHBACK_SIZENUMBERWhichtwostatementsregardingtheV$FLASHBACK_DATABASE_STATviewaretrue?()A.BEGIN_TIMEisthetimeatwhichFlashbackloggingisenabled.B.END_TIMEisthetimeatwhichthequeryisexecutedontheview.C.REDO_DATAisthenumberofbytesofredodatawrittenduringtheinterval.D.Thisviewcontainsinformationaboutflashbackdatapertainingtothelast24hours.E.FLASHBACK_DATAistheamountofflashbackdatageneratedsincethedatabasewasopened.
考题
YouaremaintainingyourdatabaseinOracle10g.YouhavesetthevalueoftheSTATISTICS_LEVELinitializationparametertoTYPICALandthevalueoftheFAST_START_MTTR_TARGETparameterto900seconds.Toincreasetheperformanceofthedatabase,youwanttodeterminetheoptimalsizeoftheonlineredologfiles.Whichtoolenablesyoutodeterminetheoptimalsizeoftheonlineredologfiles?()A.OracleEnterpriseManagerB.TheV$LOGviewC.TheV$LOGFILEviewD.TheV$FLASHBACK_DATABASE_LOGSview
考题
YouareworkingasaDBAatNetFxCorporation.YoudiscoverthattheSCOTTschemaisdeletedbymistake.Youdecidetoflashthedatabasebacktothetimewhentheschemaexisted.Whichviewwillyouquerytodeterminetheestimatedsizeoftheflashbackdatathatyourequireforyourcurrenttargetretention?()A.V$FLASHBACK_DATABASE_LOGB.V$FLASHBACK_DATABASE_STATC.V$DATABASED.V$UNDOSTAT
考题
FlashbackDatabaseisenabledinyourOracle10gdatabase.Oneofyourdatabaseuserserroneouslypurgedanimportanttableresidinginhisschema.Thetablewaspurgedsometimebetween10:00P.M.and10:30P.M.Thenextday,youdecidetoflashbackthedatabase.Beforeyouflashbackthedatabase,youwanttoensurethatyouhaveallthenecessaryflashbackdata.Whichdynamicperformanceviewmustyouusetodeterminewhetheryouhavetherequiredflashbackdatatorecoverthepurgedtable?()A.V$DATABASEB.V$UNDOSTATC.V$FLASHBACK_DATABASE_LOGD.V$FLASHBACK_DATABASE_STAT
考题
At10:30A.M.,youranabatchjobbymistake,whichexecutedatransactioninthedatabase.Thetransactionidentifierofthetransactionthatmadetothechangesinthedatabaseis0500A00627B000.At11:10A.M.,youstoppedthebatchjob.Now,youwanttoidentifythechangesmadetothedatabasetablesbythebatchjob.Whichviewwillyouquery?()A.DBA_PENDING_TRANSACTIONSB.DBA_AUDIT_STATEMENTC.V$FLASHBACK_DATABASE_STATSD.FLASHBACK_TRANSACTION_QUERY
考题
Youarerequiredtoflashbackyourdatabase.Youwanttofindtheamountofflashbackdatageneratedsincethedatabasewasopened.Whichtaskwillyouperformtoobtaintherequiredinformation?()
A.QuerytheV$FLASHBACK_DATABASE_LOGview.B.QuerytheV$FLASHBACK_DATABASE_STATview.C.CheckthevalueoftheDB_FLASHBACK_RETENTION_TARGETinitializationparameter.D.QuerytheV$RECOVERY_FILE_DESTview.
考题
YouaremaintainingtheSALESdatabaseforanorganization.YouhaveenabledtheFlashbackDatabasefeatureandwanttoestimatetheflashbackspacerequiredforfutureoperations.Whichviewwouldyouquerytoestimatetheflashbackspacerequired?()A.V$DATABASEB.V$FLASHBACK_DATABASE_STATC.V$FLASHBACK_DATABASE_LOGD.V$RECOVERY_FILE_DEST
考题
Youexecutedthefollowingqueryinyourdatabase:SELECToldest_flashback_scn,oldest_flashback_timeFROMV$FLASHBACK_DATABASE_LOG;Whatwouldyoudeterminefromthe output?()
A.Thetimewhenthelastflashbackoperationinyourdatabasewasperformed.B.Thetimewhenthefirstflashbackoperationinyourdatabasewasperformed.C.AlistofflashbackoperationsperformedinyourdatabaseusingSCNandtime.D.Theapproximatetimeandthelowestsystemchangenumber(SCN)towhichyoucanflashbackyourdatabase.