Error
Error Code:
1207
MySQL Error 1207: Update Locks in READ UNCOMMITTED
Description
This error occurs when a transaction operating under the `READ UNCOMMITTED` isolation level attempts to perform an operation that requires acquiring update locks, such as `UPDATE` or `DELETE` statements. `READ UNCOMMITTED` is designed primarily for scenarios where dirty reads are acceptable and does not permit modifications that require row-level locking.
Error Message
Update locks cannot be acquired during a READ UNCOMMITTED transaction
Known Causes
3 known causesAttempting DML in READ UNCOMMITTED
An `UPDATE` or `DELETE` statement was executed within a transaction explicitly set to, or defaulted to, the `READ UNCOMMITTED` isolation level.
Misconfigured Transaction Isolation
The session's or global transaction isolation level was inadvertently set to `READ UNCOMMITTED` when data modification operations were intended.
Application Logic Error
Application code initiated a transaction with `READ UNCOMMITTED` but subsequently tried to modify data, leading to a locking conflict.
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