试题详情
- 多项选择题 Your database instance is functional for the past one month. The Automatic Workload Repository（AWR） snapshot retention is set to 7 and the STATISTICS_LEVEL initialization parameter is set to TYPICAL. You receive a complaint about the poor performance of the database between 7 PM and 9 PM of theprevious day. Choose two actions any of which can be referred to first to diagnose the problem. （）
A、Use the Active Session History report.
B、Use the AWR Compare Periods report.
C、Use an ADDM analysis between 7 PM and 9 PM of the previous day.
D、Use the AWR Compare Period report between 7 PM and 9 PM of the previous day.
- B,C
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