ORACLE 资源分配

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制定资源分配计划：
Level1 - Level8：分配CPU使用
Level1：第一次分配；
Level2-8：对第一次分配后针对剩余空间再次分配
压力模式：Emphasis model
level1  level2  level3
100      0           0
0          100       0
0           0         100
比例模式：Ratio model
level 1
30
20
50
switch：max execute：真实执行时间；
use estimate：预计执行时间；
idle：最长等待时间；允许阻碍别人的最长时间
配对consumer group mapping：将consumer group和用户进行配对

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