Oracle9iofferstheabilitytomonitorthedynamicuseoftheSGAthroughtheDB_CACHE_ADVICEparameter.WhenthisparameterissettoREADY，whatisitseffect？（）
A. TheAdvisoryisonandwillcapturebothCPUandmemoryoverhead.
B. TheAdvisoryisonbutthememoryfortheAdvisoryisnotallocated.
C. TheAdvisoryisoffandthememoryfortheAdvisoryisnotallocated.
D. TheAdvisoryisoffbutthememoryfortheAdvisoryremainsallocated.
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WhichoneofthefollowingfilescontainsrecordsthatdonotmeetthespecifiedloadcriteriaintheSQL*Loadercontrolfile？（）
A. Logfile
B. Discardfile
C. Parameterfile
D. Badfile
YouhaveusedtheCROSSCHECKBACKUPcommandtoverifythatthebackupsrecordedintheRMANrepositoryactuallyexist.Whichcommandshouldyounowusetocheckifanyofthefilesweremissing？（）
A. LISTEXPIRED
B. DELETEEXPIRED
C. DELETEOBSOLETE
D. CHANGEUNCATALOG
WhichofthefollowingstatementsisNOTtrueaboutRMAN？（）
A. Itimprovesusabilitybyenablingyoutoreusethescriptstoperformrecoveryoperations.
B. Itdetectsblockcorruptionwhilerestorationandrecoveryoperations.
C. Itenablesyoutoperformblockmediarecovery.
D. Itiscapabletorecoverthroughunrecoverableoperations，withonlyfulldatabasebackups.
西方哲学史上对“形而上学”最深刻批判者是谁？（）
A. 黑格尔
B. 康德
C. 莱布尼茨
D. 洛克
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