Error
Error Code:
3199
MySQL Error 3199: Unsafe XA Transaction Statement
Description
This error indicates that a SQL statement considered unsafe for statement-based replication (SBR) is being executed within an XA (distributed) transaction. It warns that using such statements can lead to deadlocks or data inconsistencies on replica servers, particularly when concurrent XA transactions are involved. The issue arises because SBR might not accurately replicate the state changes of complex or distributed transactions.
Error Message
Statement is unsafe because it is being used inside a XA transaction. Concurrent XA transactions may deadlock on replicas when replicated using statements.
Known Causes
4 known causesStatement-Based Replication (SBR) Incompatibility
The database is configured to use statement-based replication, which is inherently unsafe for certain operations within XA (distributed) transactions.
Unsafe Statement Execution in XA
A SQL statement that is considered non-deterministic or otherwise unsafe for replication is being executed as part of an XA transaction.
Concurrent XA Transaction Conflicts
Multiple XA transactions operating concurrently, when combined with statement-based replication, heighten the risk of deadlocks on replica servers.
Suboptimal Binlog Format
The binary log format is set to `STATEMENT`, which is not robust enough to safely replicate all operations within distributed XA transactions.
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