Error
Error Code:
3569
MySQL Error 3569: Conflicting Table Locks
Description
Error 3569 indicates that a MySQL table has been specified more than once within a single `LOCK TABLES` statement or a related locking context. This occurs when the database system detects a redundant or conflicting reference to the same table in the locking clauses, preventing a clear and unambiguous lock operation.
Error Message
Table %s appears in multiple locking clauses.
Known Causes
3 known causesDuplicate Table in LOCK TABLES Statement
The same table name is explicitly listed more than once within a single `LOCK TABLES` statement, potentially with different lock types (e.g., READ and WRITE) or as a simple redundancy.
Dynamic SQL Generation Error
A bug in the application's dynamic SQL generation logic inadvertently adds the same table multiple times to the locking clause of a query.
Complex Stored Procedure Logic
Within a stored procedure or function, the same table might be included in separate locking clauses that are evaluated sequentially or concurrently within a single session.
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