Error
Error Code:
1150
MariaDB Error 1150: Delayed Insert Lock Failure
Description
This error occurs when the MariaDB server's dedicated thread for processing `INSERT DELAYED` statements is unable to acquire the necessary lock on the target table. This typically happens because another session or process already holds an incompatible lock, preventing the delayed insert from proceeding.
Error Message
Delayed insert thread couldn't get requested lock for table %s
Known Causes
3 known causesConcurrent Table Locking
Another database session or process is holding an exclusive or incompatible lock on the target table, preventing the delayed insert thread from acquiring the necessary write lock.
Ongoing Schema Modifications
The target table is currently undergoing schema changes (e.g., `ALTER TABLE`), which typically require exclusive table locks, thus blocking any pending delayed inserts.
Extended Transaction Holds
A long-running transaction might be implicitly holding locks on the table or many rows within it, preventing the delayed insert thread from acquiring the required write access.
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