resmgr:become active等待事件

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Select event rom v$session group by event;

resmgr:become active

resmgr:become active

resmgr:become active

resmgr:become active

resmgr:become active

smon timer
rdbms ipc message
rdbms ipc message
rdbms ipc message
rdbms ipc message
rdbms ipc message
pmon timer

发现有大量的resmgr:become active事件

resmgr:become active
这个等待事件的解释
The session is waiting for a resource manager active session slot. This event occurs when the resource manager is enabled and the number of active sessions in the session’s current consumer group exceeds the current resource plan’s active session limit for the consumer group. 

问题分析

这个问题的原因是由于资源管理器超过当前资源的限额。INTERNAL_QUIESCE资源管理器仅仅容许sys连接到数据库上。

解决方法:

alter system set resource_manager_plan=”;


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