Error
Error Code:
3946
MySQL Error 3946: User Role Mandatory Check Lock Failure
Description
MySQL Error 3946 indicates that the user management service failed to acquire a necessary internal lock. This prevents the database from determining if a specific role is mandatory, often occurring during role-related operations when the service is under contention or experiencing resource issues.
Error Message
Failed to acquire lock on user management service, unable to determine if role `%s`@`%s` is mandatory
Known Causes
3 known causesResource Contention or Deadlock
Other concurrent operations or a previous incomplete transaction might be holding locks required by the user management service, leading to contention or a deadlock situation.
User Management Service Unresponsiveness
The internal user management service might be overloaded, stalled, or experiencing an internal issue, preventing it from responding to lock requests.
System Resource Exhaustion
Low system memory, CPU, or disk I/O on the database server can hinder the user management service's ability to operate and acquire necessary locks.
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