本站中文解释
RESOURCE_MANAGER_CPU_ALLOCATION:这个参数控制着分配CPU的百分比，即给予每个用户因为使用优先级而得到的CPU资源，其参数值依据是根据优先级值进行设置，优先级值范围为1 – 10 ，其中：
1. 参数值为TRUE时，表示开启资源管理器功能；
2. 参数值为FALSE时，表示关闭资源管理器功能。
正确设置：
1. 为需要有意义的优先级值设置RESOURCE_MANAGER_CPU_ALLOCATION参数；
2. 参数值应该按照期望的分配比重来设置，即：
例如：优先级1的用户可以被分配50%的CPU，参数值应该为0.5；
3. 优先级值相加应该能得到1，或者接近1；
4. 参考oracle文档，定义健康的控制水平；
5. 根据最新的性能数据，进行分析以确定资源分配水平。
官方英文解释
RESOURCE_MANAGER_CPU_ALLOCATION specifies the number of CPUs that the Resource Manager should use. The Resource Manager controls how a system’s CPUs are utilized by its database’s sessions.
| Property | Description |
|---|---|
| Parameter type |
Integer |
| Default value |
The number of logical CPUs reported by the operating system. |
| Modifiable |
|
| Modifiable in a PDB |
No |
| Range of values |
|
| Basic |
No |
Note:
The RESOURCE_MANAGER_CPU_ALLOCATION parameter is deprecated. It is retained for backward compatibility only. Use the CPU_COUNT parameter instead.
The Resource Manager schedules database sessions on the CPUs according to a resource plan that has been configured and enabled by the DBA. Normally, the Resource Manager schedules enough database sessions to keep all CPUs utilized. However, in some scenarios, a DBA may only want to schedule enough database sessions to keep a subset of the CPUs utilized.
See Also:
“CPU_COUNT”