You find today’s performance of your production database to be the best ever. Therefore， you want to be notified in the future whenever the performance degrades by 10% of today’s performance. What is the first step that you would take to ensure this？（）<img src="/Image1/06/06aabe7d6bf708b9024c700e27bbd35d.jpg" /> A:A B:B C:C D:D E:E

You find today’s performance of your production database to be the best ever. Therefore， you want to be notified in the future whenever the performance degrades by 10% of today’s performance. What is the first step that you would take to ensure this？（）

A:A
B:B
C:C
D:D
E:E

出自：Oracle认证

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