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Which three statements about performance analysis by SQL Performance Analyzer are true? （）
A:It detects changes in SQL execution plans.
B:It produces results that can be used to create the SQL plan baseline.
C:The importance of SQL statements is based on the size of the objects accessed.
D:It generates recommendations to run SQL Tuning Advisor to tune regressed SQLs.
E:It shows only the overall impact on workload and not the net SQL impact on workload.

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出自：Oracle认证

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