You notice a performance change in your production Oracle 12c database. You want to know which change caused this performance difference. Which method or feature should you use?（）A、Compare Period ADDM reportB、AWR Compare Period reportC、Active Session His

题目

You notice a performance change in your production Oracle 12c database. You want to know which change caused this performance difference. Which method or feature should you use?（）

  • A、Compare Period ADDM report
  • B、AWR Compare Period report
  • C、Active Session History (ASH) report
  • D、Taking a new snapshot and comparing it with a preserved snapshot
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参考答案和解析
正确答案:B
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