Error
Error Code:
1842
MySQL Error 1842: GTID_PURGED Variable Changed
Description
This error indicates that the `@@GLOBAL.GTID_PURGED` system variable has been explicitly altered during runtime. `GTID_PURGED` tracks the set of GTIDs for transactions that have been applied and purged from binary logs, playing a critical role in GTID-based replication. Direct modification can disrupt replication integrity and data consistency.
Error Message
@@GLOBAL.GTID_PURGED was changed from '%s' to '%s'.
Known Causes
3 known causesDirect Manual GTID_PURGED Override
An administrative user or automated script explicitly executed a `SET GLOBAL` command to modify the `GTID_PURGED` variable.
Improper Replication Management
This error can occur when attempting to re-establish or modify GTID-based replication without following strict guidelines for `GTID_PURGED` management.
Backup Restore Misconfiguration
A database restore operation might incorrectly attempt to set `GTID_PURGED` to a value that conflicts with the server's current GTID state.
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