存储器容量1G、1K、1M,分别表示2的()次方字节。A.10、20、30B.30、10、20C.20、30、10D.30、20、10
存储器容量1G、1K、1M,分别表示2的()次方字节。
A.10、20、30
B.30、10、20
C.20、30、10
D.30、20、10
存储器容量1G、1K、1M,分别表示2的()次方字节。
A.10、20、30
B.30、10、20
C.20、30、10
D.30、20、10
第1题
A.authenticationbypasswordfile
B.authenticationbyusingcertificatesoverSSL
C.authenticationbyusingtheOracleInternetDirectory
D.authenticationbyusingthelocalOSofthedatabaseserver
第2题
A.Undodataisretaineduntilthenextfulldatabasebackup.
B.Nocommittedundodatawillbeoverwrittenfor10minutes.
C.Committedundodatawillbekeptforeverifnotoverwrittenwithin600seconds.
D.Guaranteesthatrequestedundoinformationareavailableuntiltheinstanceisshutdown.
第3题
A.Thedatabaseinstanceaborts.
B.Thedatabaseoperationtemporarilyhaltstillthememberbecomesavailable.
C.Writingproceedsasnormal.LGWRwritestotheavailablemembersofagroupandignorestheunavailablemembers.
D.ThememberwouldbemarkedasSTALEandanerrormessagewouldbewrittentothealertlogfileandLGWRtracefile.
E.ThestatusofthegroupchangestoINACTIVEandanerrormessagewouldbewrittentothealertlogfileandLGWRtracefile.
第4题
A.Theoptimizerstatisticsarecollectedautomatically.
B.Onlythetimedoperatingsystem(OS)statisticsandplanexecutionstatisticsarecollected.
C.TheOracleserverdynamicallygeneratesthenecessarystatisticsontablesaspartofqueryoptimization.
D.ThesnapshotsfortheAutomaticWorkloadRepository(AWR)arenotgeneratedautomatically.
E.SnapshotscannotbecollectedmanuallybyusingDBMS_WORKLOAD_REPOSITORYPACKAGE.
第5题
A.Theoptimizerstatisticsarecollectedautomatically.
B.Onlythetimedoperatingsystem(OS)statisticsandplanexecutionstatisticsarecollected.
C.TheOracleserverdynamicallygeneratesthenecessarystatisticsontablesaspartofqueryoptimization.
D.ThesnapshotsfortheAutomaticWorkloadRepository(AWR)arenotgeneratedautomatically.
E.SnapshotscannotbecollectedmanuallybyusingDBMS_WORKLOAD_REPOSITORYPACKAGE.
第6题
A.Thedatabaseinstanceaborts.
B.Thedatabaseoperationtemporarilyhaltstillthememberbecomesavailable.
C.Writingproceedsasnormal.LGWRwritestotheavailablemembersofagroupandignorestheunavailablemembers.
D.ThememberwouldbemarkedasSTALEandanerrormessagewouldbewrittentothealertlogfileandLGWRtracefile.
E.ThestatusofthegroupchangestoINACTIVEandanerrormessagewouldbewrittentothealertlogfileandLGWRtracefile.
第7题
A.flashbackthedatabase
B.performpoint-in-timerecovery
C.performafulldatabaserecovery
D.dropandre-createthetablespace
E.useRecoveryManager(RMAN)torecoverthedatabase
第8题
A.7,2,3,1,4,6,5
B.7,1,3,2,6,5,4
C.2,1,7,6,3,5,4
D.2,7,3,5,1,6,4
第9题
A.shutdownandrestarttheinstance
B.addnewtempfilestothetemporarytablespacesafterrecovery
C.performamediarecoveryandopenthedatabasewiththeRESETLOGSoption
D.performamediarecoveryandbringthedatabasetoNOARCHIVELOGmode
第10题
A.noprofiles
B.thedefaultprofile
C.sameastheprofileofSYSuser
D.sameastheprofileofSYSTEMuser
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