. Resource consumer group (资源用户组) A group of sessions that are grouped together based on resource requirements.
The Resource Manager allocates resources to resource consumer groups, not to individual sessions.
资源管理器将资源统一分配给资源用户组,而不是某一个具体的会话,当会话建立时会根据自身属性映射到不同的用户组,并从中申请系统资源
. Resource plan (资源计划) A container for directives that specify how resources are allocated to resource
consumer groups. You specify how the database allocates resources by activating
a specific resource plan. 一个数据库可以有多个Resource Plan,但是同一时刻只能有一个Plan状态为Active(由初始化参数 resource_manager_plan 决定),关联多个 Resource Plan directive
. Resource plan directive (资源计划指令) Associates a resource consumer group with a particular plan and specifies how
resources are to be allocated to that resource consumer group.
创建一个计划指令后就决定了系统资源如何分配给一个资源用户组
二,如何创建一个资源计划
1. Create Pending Area All changes to the plan schema must be done within a pending area. The pending
area can be thought of as a "scratch" area for plan schema changes. 所有关于 Resource Manager 组件创建和更改都必须在 Pending Area 中完成,文档说可以理解为一个“草稿区”