数据链路层的功能不包括()
A.数据转换
B.链路管理
C.差错控制
D.流量控制
第1题
A.Starttheinstanceandopenthedatabase,instancerecoveryautomaticallyrecoverscontrolfiles
B.Createafilebasedonthecontentsofthetracefileandsaveittothecontrolfilelocationsandstartthedatabase
C.Re-createthedatabase(Therecoveryofthecontrolfileisnotpossiblebecauseyouhavelostallthecontrolfiles.)
D.Starttheinstance,intheNOMOUNTstate,re-createthecontrolfileusingtheCREATECONTROLFILEcommandstoredinthetracefile.
E.StarttheinstanceandMOUNTthedatabase,thenre-createthecontrolfileusingtheCREATECONTROLFILEcommandstoredinthetracefile.
第2题
A. No transaction on the tablespace is allowed but you can perform queries.
B. The tablespace will automatically come out of backup mode when the file copy is complete.
C. The checkpoint change number is frozen in headers of the data files until the file is removed from backup mode.
D. The database writes the before image of an entire block to the redo stream before modifying. block tor the first time.
第3题
A.1-c,2-b,3-d,4-a
B.1-b,2-c,3-d,4-a
C.1-a,2-b,3-c,4-d
D.1-a,2-b,3-d,4-c
第4题
A. Create a table view.
B. Create a view in any schema.
C. Create a view in your schema.
D. Create a sequence view in any schema.
E. Create a view that is accessible by everyone.
F. Create a view only of it is based on tables that you created.
第5题
A.Enableinstancefailover
B.Configuresharedserver
C.Enabledatabasefailover
D.Enableconnect-timefailover
E.EnableTransparentApplicationFailover(TAF)
第6题
A. Segment Advisor
B. SQL Access Advisor
C. Optimizer statistics gathering
D. Automatic SQL Tuning Advisor
E. Automatic Database Diagnostics Monitor
第7题
A.Monitorthealert.logfile
B.Enableserver-sideSQLtracingforusersessions
C.Enablefine-grainedauditingforthecustomertable
D.EnableFine-GrainedAccessControl(FGAC)forthecustomertable
E.WriteadatabasetriggeronthecustomertableontheSELECTevent
第8题
A. You cannot roll back this statement.
B. All pending transactions are committed.
C. All views based on the DEPT table are deleted.
D. All indexes based on the DEPT table are dropped.
E. All data in the table is deleted, and the table structure is also deleted.
F. All data in the table is deleted, but the structure of the table is retained.
G. All synonyms based on the DEPT table are deleted.
第9题
A. selection of SQL plan baselines
B. partitioning of tables and indexes
C. creation of index-organized tables
D. creation of bitmap, function-based, and B-tree indexes
E. optimization of materialized views for maximum query usage and fast refresh
第10题
A.LargePool
B.RedoLogBuffer
C.DatabaseBufferCache
D.ProgramGlobalArea(PGA)
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