Error
Error Code:
1784
MariaDB Error 1784: GTID Event Mismatch
Description
This error indicates that the MariaDB server encountered GTID-related events (Gtid_log_event or Previous_gtids_log_event) in its binary log or a replication stream, but its global `GTID_MODE` system variable is currently set to `OFF`. This critical mismatch prevents the server from processing the log/stream correctly, often occurring during replication setup, restoration from a backup, or server startup after a configuration change.
Error Message
Found a Gtid_log_event or Previous_gtids_log_event when @@GLOBAL.GTID_MODE = OFF.
Known Causes
3 known causesReplication Mode Mismatch
The replication source (master) is operating with GTID enabled, but the replica (slave) has its `GTID_MODE` set to `OFF`, leading to an incompatibility when processing events.
Backup from GTID-Enabled Server
An attempt was made to restore a database backup (e.g., binary log files) that contains GTID events onto a MariaDB server where `GTID_MODE` is currently disabled.
Changed GTID Configuration
The server previously operated with `GTID_MODE` enabled, but it was subsequently disabled, and the server is now attempting to process older binary logs or recover from a state that includes GTID information.
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