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