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You want to flash back a test database by five hours.You issue this command:SQL > FLASHBACK DATABASE TO TIMESTAMP (SYSDATE － 5／24);Which two statements are true about this flashback scenario?()A. The database must have multiplexed redo logs for the flashb

题目
You want to flash back a test database by five hours.You issue this command:SQL > FLASHBACK DATABASE TO TIMESTAMP (SYSDATE － 5／24);Which two statements are true about this flashback scenario?()

A. The database must have multiplexed redo logs for the flashback to succeed.

B. The database must be MOUNTED for the flashback to succeed.

C. The database must use block change tracking for the flashback to succeed.

D. The database must be opened in restricted mode for the flashback to succeed.

E. The database must be opened with the RESETLOGS option after the flashback is complete.

F. The database must be opened in read-only mode to check if the database has been flashed back to the correct SCN.

相似考题

1.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

2.ThesearethedetailsaboutV$FLASHBACK_DATABASE_STAT：SQL>DESCV$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.

3.YouaremaintainingyourdatabaseinOracle10g.YouhavesetthevalueoftheSTATISTICS_LEVELinitializationparametertoTYPICALandthevalueoftheFAST_START_MTTR_TARGETparameterto900seconds.Toincreasetheperformanceofthedatabase，youwanttodeterminetheoptimalsizeoftheonlineredologfiles.Whichtoolenablesyoutodeterminetheoptimalsizeoftheonlineredologfiles？（）A.OracleEnterpriseManagerB.TheV$LOGviewC.TheV$LOGFILEviewD.TheV$FLASHBACK_DATABASE_LOGSview

4.Youexecutedthefollowingqueryinyourdatabase:FROMV$FLASHBACK_DATABASE_LOGWhatwouldyoudeterminefromtheoutput?()A.thetimewhenthelastflashbackoperationinyourdatabasewasperformedB.thetimewhenthefirstflashbackoperationinyourdatabasewasperformedC.alistofflashbackoperationsperformedinyourdatabaseusingSCNandtimeD.theapproximatetimeandthelowestsystemchangenumber（SCN）towhichyoucanflashbackyourdatabase

更多“You want to flash back a test database by five hours.You issue this command:SQL > FLASHBACK DATABASE TO TIMESTAMP (SYSDATE － 5／24);Which two statements are true about this flashback scenario?() ”相关问题

  • 第1题：

    YouareworkingasaDBAatNetFxCorporation.YoudiscoverthattheSCOTTschemaisdeletedbymistake.Youdecidetoflashthedatabasebacktothetimewhentheschemaexisted.Whichviewwillyouquerytodeterminetheestimatedsizeoftheflashbackdatathatyourequireforyourcurrenttargetretention？（）

    A.V$FLASHBACK_DATABASE_LOG

    B.V$FLASHBACK_DATABASE_STAT

    C.V$DATABASE

    D.V$UNDOSTAT


    参考答案：A

  • 第2题：

    At10：30A.M.，youranabatchjobbymistake，whichexecutedatransactioninthedatabase.Thetransactionidentifierofthetransactionthatmadetothechangesinthedatabaseis0500A00627B000.At11：10A.M.，youstoppedthebatchjob.Now，youwanttoidentifythechangesmadetothedatabasetablesbythebatchjob.Whichviewwillyouquery？（）

    A.DBA_PENDING_TRANSACTIONS

    B.DBA_AUDIT_STATEMENT

    C.V$FLASHBACK_DATABASE_STATS

    D.FLASHBACK_TRANSACTION_QUERY


    参考答案：D

  • 第3题：

    YouaremaintainingtheSALESdatabaseforanorganization.YouhaveenabledtheFlashbackDatabasefeatureandwanttoestimatetheflashbackspacerequiredforfutureoperations.Whichviewwouldyouquerytoestimatetheflashbackspacerequired？（）

    A.V$DATABASE

    B.V$FLASHBACK_DATABASE_STAT

    C.V$FLASHBACK_DATABASE_LOG

    D.V$RECOVERY_FILE_DEST


    参考答案：B

  • 第4题：

    FlashbackDatabaseisenabledinyourOracle10gdatabase.Oneofyourdatabaseuserserroneouslypurgedanimportanttableresidinginhisschema.Thetablewaspurgedsometimebetween10：00P.M.and10：30P.M.Thenextday，youdecidetoflashbackthedatabase.Beforeyouflashbackthedatabase，youwanttoensurethatyouhaveallthenecessaryflashbackdata.Whichdynamicperformanceviewmustyouusetodeterminewhetheryouhavetherequiredflashbackdatatorecoverthepurgedtable？（）

    A.V$DATABASE

    B.V$UNDOSTAT

    C.V$FLASHBACK_DATABASE_LOG

    D.V$FLASHBACK_DATABASE_STAT


    参考答案：C

  • 第5题：

    Youarerequiredtoflashbackyourdatabase.Youwanttofindtheamountofflashbackdatageneratedsincethedatabasewasopened.Whichtaskwillyouperformtoobtaintherequiredinformation?()

    A.QuerytheV$FLASHBACK_DATABASE_LOGview.

    B.QuerytheV$FLASHBACK_DATABASE_STATview.

    C.CheckthevalueoftheDB_FLASHBACK_RETENTION_TARGETinitializationparameter.

    D.QuerytheV$RECOVERY_FILE_DESTview.


    参考答案：B

  • 第6题：

    Youexecutedthefollowingqueryinyourdatabase:SELECToldest_flashback_scn,oldest_flashback_timeFROMV$FLASHBACK_DATABASE_LOG;Whatwouldyoudeterminefromthe output?()

    A.Thetimewhenthelastflashbackoperationinyourdatabasewasperformed.

    B.Thetimewhenthefirstflashbackoperationinyourdatabasewasperformed.

    C.AlistofflashbackoperationsperformedinyourdatabaseusingSCNandtime.

    D.Theapproximatetimeandthelowestsystemchangenumber（SCN）towhichyoucanflashbackyourdatabase.


    参考答案：D

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