MySQL Error 3992: Cannot Change GTID_MODE with Auto-Failover

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Description

This error occurs when you attempt to modify the `@@GLOBAL.GTID_MODE` system variable (specifically, disabling it or changing it to a mode that doesn't require GTID) while Asynchronous Replication Connection Failover (`SOURCE_CONNECTION_AUTO_FAILOVER = 1`) is enabled. MySQL prevents this operation to maintain data consistency and replication integrity, as disabling GTID mode could disrupt the failover mechanism.

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Error Message

The @@GLOBAL.GTID_MODE = %s cannot be executed because Asynchronous Replication Connection Failover is enabled i.e. CHANGE REPLICATION SOURCE TO SOURCE_CONNECTION_AUTO_FAILOVER = 1.

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Known Causes

3 known causes

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GTID_MODE Modification Conflict

An attempt was made to change `@@GLOBAL.GTID_MODE` to a value incompatible with an active Asynchronous Replication Connection Failover setup.

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Active Replication Auto-Failover

The MySQL server is currently configured with `CHANGE REPLICATION SOURCE TO SOURCE_CONNECTION_AUTO_FAILOVER = 1`, which restricts certain `GTID_MODE` changes.

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Misunderstood Replication Prerequisites

The user might be unaware that Asynchronous Replication Connection Failover relies on GTID functionality and restricts changes to `GTID_MODE`.

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Solutions

Coming Soon

Detailed 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

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Related Errors

5 related errors