前面几期 awr报告中的Instance Efficiency Percentages做了解释，这期照旧总结下 
理论上说上述比例应接近100%
[AWR报告]Buffer Nowait
[AWR报告]Redo NoWait %
[AWR报告]Buffer Hit %
[AWR报告]In-memory Sort %
[AWR报告]Library Hit %
[AWR报告]Soft Parse %
[AWR报告]Execute to Parse %
[AWR报告]Latch Hit %
[AWR报告]Parse CPU to Parse Elapsd %
[AWR报告] % Non-Parse CPU
下期预告: Top 10 Foreground Events by Total Wait Time
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