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材料在自然状态下,单位体积的质量称为材料的()。A.表观密度B.堆积密度C.干表观密度D.干堆积密度
材料在自然状态下,单位体积的质量称为材料的()。
A.表观密度
B.堆积密度
C.干表观密度
D.干堆积密度
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材料在自然状态下,单位体积的质量称为材料的()。
A.表观密度
B.堆积密度
C.干表观密度
D.干堆积密度
第1题
A. Only a single partitioning key column can be specified.
B. All DML statements must use partition-extended syntax.
C. The same physical attributes must be specified for each partition.
D. Unique local indexes cannot be created on a system-partitioned table.
E. Traditional partition pruning and partitionwise joins are not supported on these tables.
第2题
A.ThetableusesthedefaultFlashbackDataArchive.
B.TheFlashbackDataArchiveIscreatedIntheSYSAUXtablespace.
C.TheFlashbackDataArchiveiscreatedinthesametablespacewherethetablesarestored.
D.ThecommandgeneratesanerrorbecausenoflashbackDataArchivenameisspecifiedandthereis nodefaultFlashbackDataAchieve.
第3题
A.increasethesizeoftheredologbuffer
B.increasethenumberofredologgroups
C.increasethenumberoflogwriterprocesses
D.increasethenumberofARCnprocesses
E.changetheappropriateLOG_ARCHIVE_DEST_nparametertoplacethearchivedlogfilesinaseparatelocation
第4题
A.Theextentsinundotablespaceretaindatauntilthenextfulldatabasebackup.
B.Theextentscontainingcommitteddataintheundotablespaceareneveroverwritten.
C.Theextentswhichnolongercontainuncommitteddataintheundotablespacearenotoverwrittenforatleast15minutes.
D.Theextentscontainingcommitteddataintheundotablespacearenotoverwrittenuntiltheinstanceisshutdown.
第5题
A. It enables all system triggers.
B. It allows only SYSDBA connections.
C. It ensures that all job queues remain active during the upgrade process.
D. It sets system initialization parameters to specific values that are required to enable database upgrade scripts to be run.
第6题
A.ANALYZEoperations
B.dbv
C.SQLqueriesthataccessthepotentiallycorruptblock
D.RMAN
E.Alloftheabove
第7题
A.increasethesizeofredologfiles
B.increasethesizeoftheundotablespace
C.increasethesizeoftheDatabaseBufferCache
D.increasethesizeofthedefaulttemporarytablespace
E.enabletheretentionguaranteefortheundotablespace
第8题
A.ReducedMTTR.
B.Datafilesremainofflinewhilecorruptblocksarerepaired.
C.Datafilesremainonlinewhilecorruptblocksarerepaired.
D.AandC
第9题
A.MemoryAdvisor
B.SegmentAdvisor
C.SQLAccessAdvisor
D.AutomaticWorkloadRepository(AWR)
E.AutomaticDatabaseDiagnosticMonitor(ADDM)
第10题
A. failures because a data file is renamed by error
B. failures when no standby database is configured
C. failures that require no archive logs to be applied for recovery
D. failures due to loss of connectivity-for example, an unplugged disk cable
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