网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
Note the following statements that use flashback technology:1. FLASHBACK TABLE <table> TO SCN <scn>;2. SELECT * FROM <table> AS OF SCN 123456;3. FLASHBACK TABLE <table> TO BEFORE DROP;4. FLASHBACK DATABASE TO TIMESTAMP <timestamp>;5. SELECT * FROM <table> VERSIONS AS OF SCN 123456 AND 123999;Which of these statements will be dependent on the availability of relevant undo data in the undo segment?（）
A. 1, 2, and 5
B. 1, 3, and 4
C. 2, 3, 4, and 5
D. 1, 2, 3, 4, and 5
参考答案
更多 “ Note the following statements that use flashback technology:1. FLASHBACK TABLE table TO SCN scn;2. SELECT * FROM table AS OF SCN 123456;3. FLASHBACK TABLE table TO BEFORE DROP;4. FLASHBACK DATABASE TO TIMESTAMP timestamp;5. SELECT * FROM table VERSIONS AS OF SCN 123456 AND 123999;Which of these statements will be dependent on the availability of relevant undo data in the undo segment?（）A. 1, 2, and 5B. 1, 3, and 4C. 2, 3, 4, and 5D. 1, 2, 3, 4, and 5 ” 相关考题
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$FLASHBACK_DATABASE_STAT viewE. Check the value assigned for the UNDO_RETENTION parameter
考题
Notetheoutputofthefollowingquery；SQLSELECTflashback_archieve_name，statusFROMdba_flashback_archieve；FLASHBACK_ARCHIEVE_NAMESTATUSFLA1YouexecutedthefollowingcommandtoenableFlashbackDataArchiveontheEXCHANGB_PATEtable：ALTERTABLEexchange_rateFLASHBACKARCHIEVE；Whatistheoutcomeofthiscommand？（）A.ThetableusesthedefaultFlashbackDataArchive.B.TheFlashbackDataArchiveIscreatedIntheSYSAUXtablespace.C.TheFlashbackDataArchiveiscreatedinthesametablespacewherethetablesarestored.D.ThecommandgeneratesanerrorbecausenoflashbackDataArchivenameisspecifiedandthereis nodefaultFlashbackDataAchieve.
考题
ThesearethedetailsaboutV$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
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
考题
YouareworkingasaDBAatNetFxCorporation.YoudiscoverthattheSCOTTschemaisdeletedbymistake.Youdecidetoflashthedatabasebacktothetimewhentheschemaexisted.Whichviewwillyouquerytodeterminetheestimatedsizeoftheflashbackdatathatyourequireforyourcurrenttargetretention？（）A.V$FLASHBACK_DATABASE_LOGB.V$FLASHBACK_DATABASE_STATC.V$DATABASED.V$UNDOSTAT
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.
考题
下面哪2个参数是flashback databae必须设置的? ()
A. DB_FLASHBACK_RETENTION_TARGETB. DB_RECOVERY_FILE_DESTC. RECOVERY_PARALLELISMD. FLASHBACK_TRANSACTION_QUERYE. DB_RECOVERY_FILE_DEST_SIZE
考题
Flash back
热门标签
最新试卷