Error
Error Code:
1556
MariaDB Error 1556: Cannot Lock Log Tables
Description
This error occurs when an attempt is made to acquire a lock (e.g., using `LOCK TABLES`) on a table that MariaDB designates as an internal 'log table'. MariaDB restricts locking these tables to maintain system integrity, prevent deadlocks, and ensure consistent performance of internal operations.
Error Message
You can't use locks with log tables.
Known Causes
3 known causesDirect Lock Attempt
An explicit `LOCK TABLES` statement was executed on a table identified by MariaDB as an internal system or log table.
Implicit Lock Operation
A Data Definition Language (DDL) or Data Manipulation Language (DML) statement implicitly triggered a lock attempt on an internal log table.
Application Misconfiguration
Application code or an ORM is attempting an operation that results in locking a table prohibited from user-level locking.
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