TheDB_BLOCK_CHECKINGinitializationparameterissettoOFF.数据库块检测初始化参数被设定为关Whichblockcheckingwouldbeperformed？（）
A. TheOracledatabasewillperformblockcheckingfortheindexblocksonly
B. TheOracledatabasewillnotperformblockcheckingforanyofthedatablocks
C. TheOracledatabasewillperformblockcheckingforthedefaultpermanenttablespaceonly
D. TheOracledatabasewillperformblockcheckingforthedatablocksinallusertablespaces
E. TheOracledatabasewillperformblockcheckingforthedatablocksintheSYSTEMtablespaceonlyOracle
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Youexecutedthefollowingcommands：SQL＞ALTERSESSIONSETOPTIMIZER_USE_PENDING_STATISTICS=false；SQL＞EXECUTEDBMS_STATS.SET_TABLE_PREFS（’SH’，’CUSTOMERS’，’PUBLISH’，’false’）；SQL＞EXECUTEDBMS_STATS.GATHER_TABLE_STATS（’SH’，’CUSTOMERS’）；WhichstatementiscorrectregardingtheabovestatisticscollectionontheSH.CUSTOMERStableintheabovesession？（）
A. Thestatisticsarestoredinthependingstatisticstableinthedatadictionary.
B. Thestatisticsaretreatedasthecurrentstatisticsbytheoptimizerforallsessions.
C. Thestatisticsaretreatedasthecurrentstatisticsbytheoptimizerforthecurrentsessionsonly.
D. Thestatisticsaretemporaryandusedbytheoptimizerforallsessionsuntilthissessionterminates.
WhichtwostatementsaboutFlashbackQueryaretrue？（）
A. Itisgeneratedbyusingtheredologfiles.
B. Ithelpsinrow-levelrecoveryfromusererrors.
C. ItcanbeperformedtorecoverALTERTABLEstatements
D. Itfailswhenundodatapertainingtothetransactionisoverwritten.
E. ThedatabasehastobeopenedwiththeresetlogsoptionafterperformingFlashbackQuery.
YouperformabackupusingthefollowingBACKUPcommand:RMAN>BACKUPASCOMPRESSEDBACKUPSETDATABASE,Whichstatementistrueofthiscommand？（）
Adifferentprocedureisrequiredtorestoreadatabasefromcompressedbackups
B. TheASCOMPRESSEDclauseoftheBACKUPcommandprovidedbyRMANisusedtocreatecompressedbackupsetsandimagecopies.
C. Usingthiscommandtocreatebackupsminimizesthebandwidthconsumed.
D. Usingthiscommandtocreatebackupsimprovestheperformanceofthebackupprocess
InSolaris10，thistoolprovidesanautomatedandproactiveapproachtopatchmanagement.Itprovidesagraphicaluserinterfaceaswellasacommandlineinterface.Whichtoolisit？（）
A. smpatch
B. Patchtool
C. Updatemanager
D. Patchmanager
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