排水泵站且承泄区水位变幅较大时,为了减少工程量和工程造价,需要设()。A.进水池B.压力水箱C.前池D
排水泵站且承泄区水位变幅较大时,为了减少工程量和工程造价,需要设()。
A.进水池
B.压力水箱
C.前池
D.出水池
排水泵站且承泄区水位变幅较大时,为了减少工程量和工程造价,需要设()。
A.进水池
B.压力水箱
C.前池
D.出水池
第1题
A.function
B.package
C.procedure
D.databasetrigger
E.anonymousPL/SQLblock
第2题
A. It bypasses the OS file system cache.
B. A separate NFS interface is required for use across Linux, UNIX, and Windows platforms.
C. It uses the operating system kernel NFS layer for user tasks and network communication modules.
D. File systems need not be mounted by the kernel NFS system when being served through Direct NFS.
E. Oracle Disk Manager can manage NFS on its own, without using the operating system kernel NFS driver.
第3题
A. The optimizer adds the new plan to the plan history.
B. The optimizer selects the new plan for the execution of the SQL statement.
C. The optimizer adds the new plan to the SQL plan baseline as an accepted plan.
D. The optimizer adds the new plan to the SQL plan baseline but not in the ENABLED state.
E. The optimizer costs each of the accepted plans in the SQL plan baseline and picks the one with the lowest cost.
第4题
A.YoucanuseRMANstoredscripts.
B.Recoveryisfasterifdataisstoredincataloginadditiontothecontrolfile.
C.YoucanstorebackupInformationofallregistereddatabasesinoneplace.
D.Databasebackupsareautomaticallydeletedwhentheyareolderthanthespecifiedtimeperiod.
第5题
A.java.lang.StackOverflowError
B.java.lang.IllegalStateException
C.java.lang.ExceptionInInitializerError
D.java.lang.ArrayIndexOutOfBoundsException
第6题
A.becauseofredodatafromredologfile
B.becauseofdatafromdatabasebuffercache
C.becauseofdatafromatemporarytablespace
D.becauseofundodatafromtheundotablespace
第7题
ALGWRInput/output(I/O)fellsduetopermanentmediafailurethathasresultedInthelossofredologfileandtheLWGRterminatescausingtheinstancetocrash.Thestepstorecoverfromthelossofacurrentredologgroupmemberintherandomorderareasfollow.
1)Restorethecorruptedredologgroup.
2)Restorefromawholedatabasebackup.
3)Performincompleterecovery.
4)Relocatebyrenamingthememberofthedamagedonlineredologgrouptoanewlocation.
5)OpenthedatabasewiththeRESETLOGSoption.
6)Restartthedatabaseinstance.
7)Issueacheckpointandclearthelog.
Identifytheoptionwiththecorrectsequentialstepstoaccomplishthetaskefficiently().
第8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9题
A.ThetableusesthedefaultFlashbackDataArchive.
B.TheFlashbackDataArchiveIscreatedIntheSYSAUXtablespace.
C.TheFlashbackDataArchiveiscreatedinthesametablespacewherethetablesarestored.
D.ThecommandgeneratesanerrorbecausenoflashbackDataArchivenameisspecifiedandthereis nodefaultFlashbackDataAchieve.
第10题
A.increasethesizeoftheredologbuffer
B.increasethenumberofredologgroups
C.increasethenumberoflogwriterprocesses
D.increasethenumberofARCnprocesses
E.changetheappropriateLOG_ARCHIVE_DEST_nparametertoplacethearchivedlogfilesinaseparatelocation
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