Error
Error Code:
3979
MySQL Error 3979: Invalid START TRANSACTION Usage
Description
This MySQL error, `ER_NOT_ALLOWED_WITH_START_TRANSACTION`, indicates that a specific SQL statement or operation is not permitted immediately following a `START TRANSACTION` clause or within an active transaction block. It typically arises when attempting to execute a command that implicitly commits the current transaction or is otherwise disallowed in a transactional context.
Error Message
START TRANSACTION clause cannot be used %s
Known Causes
3 known causesDDL Statement Immediately After START TRANSACTION
Executing a Data Definition Language (DDL) statement such as `CREATE`, `ALTER`, or `DROP` directly after `START TRANSACTION` can cause this error, as DDL statements often implicitly commit any pending transaction in MySQL.
Table Locking Operations Within Transaction
Using `LOCK TABLES` or `UNLOCK TABLES` commands immediately following `START TRANSACTION` can lead to this error, as these operations manage table locks in a way that conflicts with explicit transaction boundaries.
Unsupported Non-Transactional Command
Attempting to execute certain server-level or non-transactional commands that are incompatible with an active explicit transaction, especially right after `START TRANSACTION`, can trigger this error.
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