How to Fix MySQL Error Code 2013: Lost Connection to Server During Query?

Troubleshooting MySQL Error 2013: Lost Connection During Query

MySQL Workbench users often encounter "Error Code: 2013. Lost connection to MySQL server during query." This usually happens when a query exceeds the default server timeout.

Understanding the Default Timeout

The default MySQL Workbench timeout is typically 10 seconds.

Extending the Timeout Setting

To avoid this error, increase the timeout. Modern MySQL Workbench versions offer granular timeout control.

Steps to Adjust the Timeout:

1. Launch MySQL Workbench.
2. Access "Edit" -> "Preferences."
3. Navigate to the "SQL Editor" tab.
4. Locate "DBMS connection read time out (in seconds):" and modify the value (e.g., from 10 to 6000 seconds, or 100 minutes).
5. Click "OK" to apply the changes.

Further Recommendations

Besides increasing the timeout, consider these points:

• Disable Row Limiting: In MySQL Workbench, uncheck "Limit rows" to prevent result set limitations.
• Query-Specific Timeout Override: Use SET statement_timeout=value within your MySQL query to set a specific timeout for that query.
• Server Resource Check: Ensure your MySQL server possesses sufficient memory and resources to handle lengthy queries effectively.

By implementing these timeout adjustments and best practices, you can effectively resolve "Error Code: 2013" and execute long-running queries without connection disruptions.

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