Error
Error Code:
1206
MySQL Error 1206: Lock Table Exceeded Capacity
Description
This error indicates that the InnoDB storage engine has run out of memory in its internal lock table to record new locks. It typically occurs when transactions require an excessive number of locks, either individually or collectively, exceeding the allocated capacity.
Error Message
The total number of locks exceeds the lock table size
Known Causes
4 known causesSingle Large Transaction
A single transaction performing operations (e.g., UPDATE, DELETE, INSERT) on a very large number of rows can acquire an extensive amount of locks.
High Database Concurrency
Many concurrent transactions, each acquiring a moderate number of locks, can collectively exhaust the lock table's available memory.
Long-Running Transactions
Transactions that remain open for extended periods hold onto their locks, preventing their release and contributing to lock table exhaustion.
Inefficient Query Plans
Queries lacking proper indexes or performing full table scans may acquire more locks than necessary, especially when operating on large datasets.
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