单项选择题

Your database block size is 4 KB. In this database， you are required to create a tablespace with a block size of 8 KB. Which is the prerequisite for creating this tablespace？（）

A. The parameter DB_CACHE_SIZE must be a multiple of 8.
B. The value of the parameter SGA_MAX_SIZE must be increased.
C. The tablespace must be created with a uniform extent size of 8 KB
D. The parameter DB_8K_CACHE_SIZE must be defined in the parameter file.

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单项选择题YouareshrinkingtheSCOTT.EMPtablebyexecutingtheALTERTABLESCOTT.EMPSHRINKSPACECASCADEstatement.WhatisaprerequisiteforshrinkingtheSCOTT.EMPtable？（）

A. You must enable the block change tracking feature.
B. You must have enable the flashback feature.
C. You must use the OMF in your database.
D. You must define the tablespace of the SCOTT.EMP table for automatic segment space management.

单项选择题YouaremaintainingyourdatabaseinOracle10g.YouhavesetthevalueoftheSTATISTICS_LEVELinitializationparametertoTYPICALandthevalueoftheFAST_START_MTTR_TARGETparameterto900seconds.Toincreasetheperformanceofthedatabase，youwanttodeterminethelogfilesizethatshouldequaltheminimumsizeofalltheonlineredologfiles.Whichcolumnwillenableyoutoperformthedesiredtask？（）

A. the WRITES_LOGFILE_SIZE column of the V$INSTANCE_RECOVERY view
B. the column of the V$INSTANCE_RECOVERY view
C. the OPTIMAL_LOGFILE_SIZE column of the V$INSTANCE_RECOVERY view
D. the LOG_FILE_SIZE_REDO_BLKS column of the V$INSTANCE_RECOVERY view

单项选择题Youarecreatingacluster.Thetablesintheclusterhavearelativelyuniformdistributionofvaluesintheindexcolumnandthequeriesagainsttheclusteredtablewillalmostuseanequalityoperatortoretrievethedesiredrow.Whichtypeofclusterwillyoucreate？（）

A. Index cluster
B. Hash cluster
C. Sorted Hash cluster
D. Real Application Cluster

单项选择题You issued the following command： ALTER TABLE SCOTT.EMP SHRINK SPACE； The SCOTT.EMP table is stored in the DATA1 tablespace that has the following properties： DATA1 is a read write tablespace. DATA1 is not autoextensible to an unlimited size. DATA1 is online. Segment space management for the DATA1 tablespace is manual. You issued the ALTER TABLE SCOTT.EMP SHRINK SPACE； command that generates the following error： ORA-10635： Invalid segment or tablespace type What could be the reason for the failure of the command？（）

A. The tablespace， DATA1， is not read-only.
B. The tablespace， DATA1， is not autoextensible.
C. The tablespace， DATA1， is not offline.
D. The segment space management for the tablespace， DATA1， is manual.

单项选择题YouareperformingtheshrinkoperationontheSCOTT.EMPtable.YouwanttoperformthesameoperationonalldependentobjectsoftheSCOTT.EMPtable.WhatisNOTaprerequisitefortheoperation？（）

A. You must enable the row movement on the SCOTT.EMP table.
B. You must define the tablespace of the SCOTT.EMP table for automatic segment space management.
C. You must use the CASCADE clause in the ALTER TABLE SHRINK SPACE statement.
D. You must use the COMPACT clause in the ALTER TABLE SHRINK SPACE statement.