Error
Error Code:
3926
MySQL Error 3926: Non-Existent Replication Privilege User
Description
This error indicates that the `PRIVILEGE_CHECKS_USER` specified for a MySQL replication channel does not correspond to an existing database user. It occurs when MySQL attempts to use this user for privilege checks but cannot find it in the `mysql.user` table or equivalent.
Error Message
PRIVILEGE_CHECKS_USER for replication channel '%s' was set to `%s`@`%s`, but this is not an existing user.
Known Causes
4 known causesUser Account Not Created
The MySQL user account specified in the `PRIVILEGE_CHECKS_USER` option for the replication channel was never created on the server.
Typo in User or Hostname
An incorrect username or hostname was provided in the `PRIVILEGE_CHECKS_USER` setting, causing MySQL to search for a non-existent user.
User Account Dropped
The user account previously defined for `PRIVILEGE_CHECKS_USER` was created but has since been dropped from the MySQL server.
Host Mismatch for User
The user exists, but its defined host part (e.g., 'user'@'localhost') does not match the host specified in the `PRIVILEGE_CHECKS_USER` option (e.g., 'user'@'%').
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