What two are the prerequisites for enabling Flashback Database?() (Choose two)A. The database must be in ARCHIVELOG modeB. The database must be in MOUNT EXCLUSIVE modeC. The database must be opened in RESTRICTED modeD. The database instance must be starte

题目
What two are the prerequisites for enabling Flashback Database?() (Choose two)

A. The database must be in ARCHIVELOG mode

B. The database must be in MOUNT EXCLUSIVE mode

C. The database must be opened in RESTRICTED mode

D. The database instance must be started in the NOMOUNT state

E. The database instance must have the keep buffer pool defined

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1.They fulfilled the task in()it took us.A、two-thirds timeB、two-thirds timesC、two-thirds the timeD、the two-thirds time

2.The professor asked us to write a _____________ report.A、two-hundreds-wordsB、two-hundreds-wordC、two-hundred-wordsD、two-hundred-word

3.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.

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更多“What two are the prerequisites for enabling Flashback Database?() (Choose two) ”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：

    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3题：

    About ________ of the workers in the factory were born in the ________.

    A.two-thirds, 1970 B.two-thirds, 1970s C.two-third,1970 D.two-third, 1970s


    正确答案：B

  • 第4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5题：

    TheONS15216isa32－channelsystem.TheONS15216OADMsarecapableofaddinganddroppingone,two,orfourchannels.HowaretheOADMsprovisionedtoaddanddropspecificchannels?()

    A.TheONS15216OADMcanbeprovisionedtoadd/dropone，two，orfourchannelsviaCiscoTransportManager（CTM）.

    B.TheONS15216OADMconsistsonlyofafour-channelmodule，andthenumberofportsutilizeddetermineswhetheritisaone，two，orfourchannelOADM.

    C.ThreeseparateOADMmodulesareavailableforone，two，andfourchannels.ThewavelengthstobedroppedandaddedareprogrammableviaCiscoTransportManager（CTM）.

    D.TheONS15216OADMconsistsonlyofasingle-channelmodule.Two-channelandfour-channelsupportisavailablebystackingthesingle-channelmodule.

    E.TheONS15216OADMisavailableinone，two，fourchannels.Thereare32single-channelOADMmodules，16two-channelOADMmodules，and8four-channelOADMmodules.


    参考答案：E

  • 第6题：

    12． About_______ of the workers in the factory were born in the __________．

    A． two- thirds;1970

    B． two- thirds ; 1970s

    C． two-third ; 1970

    D． two-third ; 1970s


    正确答案：B
    12．B【解析】句意：工厂里大约2/3的工人出生在20世纪70年代。分数的表达为分子用基数词，分母用序数词，如果分子大于1，则分母要用复数，排除C、D，年代的表达要在年份后加s．故选B。

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