How Can We Handle Idle MySQL Connections?
Published on 2024-11-15
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Handling Idle MySQL Connections
Many open mysql connections can persist in an idle state, hindering system performance. To address this issue, consider the following solutions:
Manual Cleanup:
Identify the process IDs of idle connections using the command:
mysql> show full processlist;
Terminate individual connections using the KILL command:
mysql> kill
; Caution: This approach may result in application or web server errors due to terminated connections.
Automatic Cleaner Service:
Configure MySQL to automatically terminate idle connections by adjusting timeout values in the my.cnf file:
interactive_timeout=60 wait_timeout=60
- These settings define the maximum idle time, after which connections will be closed.
Addressing the Underlying Cause:
While treating the symptoms of idle connections is essential, it's equally important to investigate the root cause. Determine why connections remain open despite script execution. Consider factors such as connection pooling used by web servers to optimize performance. By addressing the underlying issue, you can prevent idle connections from recurring in the future.
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