文档解释
ORA-00053: maximum number of enqueues exceeded
Cause: Ran out of enqueue state objects.
Action: Increase the value of the ENQUEUES initialization parameter.
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Error code: ORA-00053
Official English explanation: “maximum number of sessions exceeded”
Chinese explanation: 超过最大会话数
Common cases:
- This error can occur when the number of concurrent user sessions connected to an Oracle database exceeds the maximum number of sessions allowed.
- The error can also occur when the database has reached the maximum number of parallel execution processes.
Resolution steps:
- Determine the current number of user sessions and parallel execution processes by querying the V$SESSION and V$PROCESS views.
- Check the values for the initialization parameters
sessions
andparallel_max_servers
in thespfile
orinit.ora
file and increase the values if necessary. - After making the necessary changes, restart the Oracle database to take effect.
Note: If increasing the values of the initialization parameters does not resolve the error, consider optimizing database performance or increasing system resources such as memory and CPU to handle the increased load.
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