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计算机考试试题及答案解析

单项选择题

Yourdatabaseisfunctionalwithpeakloadforonehour.Youwanttopreservetheperformancestatisticscollectedduringthisperiodsothattheycanbeusedforcomparisonwhileanalyzingtheperformanceofthedatabaseinthefuture.Whatactionwouldyoutaketoachievethistask？（）
A.SettheSTATISTICS_LEVELinitializationparametertoALL.
B.Createabaselineonapairofsnapshotsthathavethestatisticsofthepeak-loadperiodinthedatabase.
C.DecreasethesnapshotintervalintheAWRtocollectmorenumberofsnapshotsduringthepeak-loadperiod.
D.SetthesnapshotretentionperiodintheAutomaticWorkloadRepository（AWR）tozerotoavoidtheautomaticpurgingofthesnapshots.
A.Youwanttopreservetheperformancestatisticscollectedduringthisperiodsothattheycanbeusedforcomparisonwhileanalyzingtheperformanceofthedatabaseinthefuture.Whatactionwouldyoutaketoachievethistask？（）
A.SettheSTATISTICS_LEVELinitializationparametertoALL.
B.Createabaselineonapairofsnapshotsthathavethestatisticsofthepeak-loadperiodinthedatabase.
C.DecreasethesnapshotintervalintheAWRtocollectmorenumberofsnapshotsduringthepeak-loadperiod.
D.SetthesnapshotretentionperiodintheAutomaticWorkloadRepository（AWR）tozerotoavoidtheautomaticpurgingofthesnapshots.
相关考题

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