Error
Error Code:
3947
MySQL Error 3947: User Management Lock Failure
Description
Error 3947 indicates that the MySQL server failed to acquire a necessary lock on its internal user management service. This prevents the server from fetching a list of mandatory roles, often occurring during administrative operations or under high load when user-related data needs to be accessed or modified.
Error Message
Failed to acquire lock on user management service, unable to fetch mandatory role list
Known Causes
3 known causesConcurrent Administrative Operations
Multiple administrative tasks, such as creating users, granting roles, or modifying permissions, are being attempted simultaneously, leading to contention for the user management service lock.
High Server Load or Resource Contention
The MySQL server or the underlying system is experiencing high CPU, memory, or I/O usage, delaying the user management service's ability to acquire the required lock.
Internal Service Unavailability
A component of the MySQL user management service is temporarily unresponsive or in a hung state, preventing it from releasing or acquiring locks effectively.
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