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Which two are prerequisites for performing a flashback transaction?()A. Flashback Database must be enabled.B. Undo retention guarantee for the database must be configured.C. EXECUTE privilege on the DBMS_FLASHBACK package must be granted to the user flash

题目
Which two are prerequisites for performing a flashback transaction?()

A. Flashback Database must be enabled.

B. Undo retention guarantee for the database must be configured.

C. EXECUTE privilege on the DBMS_FLASHBACK package must be granted to the user flashing back transaction.

D. Supplemental logging must be enabled.

E. Recycle bin must be enabled for the database.

F. Block change tracking must be enabled tor the database.

相似考题

1.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.

2.YouareworkingasaDBAatNetFxCorporation.YoudiscoverthattheSCOTTschemaisdeletedbymistake.Youdecidetoflashthedatabasebacktothetimewhentheschemaexisted.Whichviewwillyouquerytodeterminetheestimatedsizeoftheflashbackdatathatyourequireforyourcurrenttargetretention？（）A.V$FLASHBACK_DATABASE_LOGB.V$FLASHBACK_DATABASE_STATC.V$DATABASED.V$UNDOSTAT

3.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

4.YoudecidetoenableFlashbackDatabaseinyourOracle10gdatabasesothatfuturerecoverieswilltakelesstimethantraditionalrecoveries.WhichofthefollowingparametersmustbeincludedinyourinitializationparameterfilebeforeenablingFlashbackDatabase？（）A.DB_RECOVERY_FILE_DESTonlyB.DB_FLASHBACK_RETENTION_TARGETonlyC.DB_RECOVERY_FILE_DEST_SIZEandDB_RECOVERY_FILE_DESTonlyD.DB_RECOVERY_FILE_DESTandDB_FLASHBACK_RETENTION_TARGETonlyE.DB_RECOVERY_FILE_DEST_SIZE，DB_RECOVERY_FILE_DESTandF.DB_FLASHBACK_RETENTION_TARGET

更多“Which two are prerequisites for performing a flashback transaction?() ”相关问题

  • 第1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2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

  • 第3题：

    WhichtwostatementsregardingtheFLASHBACK_TRANSACTION_QUERYviewarecorrect?()

    A.Youcanfindinformationaboutonlyactivetransactionsfromtheview

    B.Youcanfindinformationaboutreadonlytransactionsfromtheview

    C.YourequiretheSELECTANYTRANSACTIONsystemprivilegetoaccesstheview

    D.Youcanfindinformationaboutbothactiveandcommittedtransactionsfromtheview

    E.YourequiretheSELECTONFLASHBACK_TRANSACTION_QUERYobjectprivilegetoaccesstheview


    参考答案：C, D

  • 第4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5题：

    下面哪2个参数是flashback databae必须设置的? ()

    A. DB_FLASHBACK_RETENTION_TARGET

    B. DB_RECOVERY_FILE_DEST

    C. RECOVERY_PARALLELISM

    D. FLASHBACK_TRANSACTION_QUERY

    E. DB_RECOVERY_FILE_DEST_SIZE


    参考答案BE

  • 第6题：

    Flash back


    答案：
    解析：
    Hash back即闪回，是指病人仿佛又完全身临创伤性事件发生时的情境，重新表现出事件发生时所伴发的各种情感，持续时间可从数秒钟到几天不等。

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