Error
Error Code:
4031
MySQL Error 4031: Client Inactivity Disconnect
Description
Error 4031 indicates that the MySQL server has closed a client connection due to a prolonged period of inactivity. This occurs when no queries are executed on an open connection for longer than the server's configured timeout settings, such as `wait_timeout` or `interactive_timeout`.
Error Message
The client was disconnected by the server because of inactivity. See wait_timeout and interactive_timeout for configuring this behavior.
Known Causes
3 known causesProlonged Client Inactivity
A user-operated client or an application's database connection remains idle without executing any queries for an extended period, exceeding the server's timeout limit.
Aggressive Server Timeout Settings
The MySQL server's `wait_timeout` or `interactive_timeout` variables are configured with values that are too short for typical client usage patterns or expected idle periods.
Application Connection Pool Issues
Connection pooling mechanisms in applications may not properly manage or refresh connections, leading to stale, idle connections that exceed server timeouts before being reused.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service