How Can I Prevent MySQL Workbench from Losing Connection During Long-Running Queries?

Avoiding MySQL Workbench Connection Timeouts During Extended Queries

Executing long-running queries in MySQL Workbench often results in connection errors like "Error Code: 2013. Lost connection to MySQL server during query." This is particularly problematic for large insert operations lasting minutes or hours. The solution lies in adjusting MySQL Workbench's connection timeout settings.

Here's how to prevent connection loss:

1. Access MySQL Workbench's preferences: Go to the "Edit" menu and select "Preferences."
2. Configure the SQL Editor timeout: In the "SQL Editor" tab, find "DBMS connection read time out (in seconds)."
3. Set a generous timeout: Increase the timeout value significantly, for example, to 86400 seconds (24 hours). This ensures the connection remains active.
4. Restart MySQL Workbench: Close and reopen MySQL Workbench to apply the changes.
5. Terminate existing queries: End any queries running from the previous session.
6. Re-run your query: Execute your long-running query.

By implementing these steps, MySQL Workbench will persistently attempt reconnection if interrupted, enabling uninterrupted query execution, even overnight.

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