Error
Error Code:
1766
MariaDB Error 1766: Setting System Variable In Transaction
Description
MariaDB Error 1766 indicates an attempt to modify a system variable while an active database transaction is in progress. Certain system variables are restricted from being altered mid-transaction to ensure data consistency and prevent unexpected behavior. This error typically occurs when a `SET` statement is executed after `START TRANSACTION` or `BEGIN`, but before `COMMIT` or `ROLLBACK`.
Error Message
The system variable %s cannot be set when there is an ongoing transaction.
Known Causes
3 known causesSession Variable Conflict
Many system variables, particularly those affecting session-specific behavior or query execution, cannot be modified while an explicit transaction is active.
Incorrect Statement Order
A `SET` statement targeting a restricted system variable is executed in a sequence where a transaction has already been initiated but not yet committed or rolled back.
Implicit Transaction Management
Application frameworks or ORMs might implicitly start transactions, leading to unexpected attempts to set variables within that transactional context without explicit user command.
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