Error
Error Code:
4004
MySQL Error 4004: Cannot Open Error Log
Description
This error indicates that the MySQL server is unable to open or write to its designated error log file. This critical issue often prevents MySQL from starting correctly or logging important operational details.
Error Message
Could not open file '%s' for error logging%s%s
Known Causes
4 known causesInsufficient File Permissions
The operating system user running the MySQL server lacks the necessary write permissions for the specified error log file or its containing directory.
Invalid Log File Path
The `log_error` configuration in your MySQL configuration file (`my.cnf` or `my.ini`) points to a non-existent directory or an improperly formatted file path.
Disk Space Exhaustion
The storage volume hosting the MySQL error log file has run out of available disk space, preventing new log entries from being written.
File System Issues
Underlying file system problems, such as corruption or an exclusive lock by another process, can prevent MySQL from accessing the error log file.
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