How to deal with MySQL connection error 1115?

How to deal with MySQL connection error 1115?

MySQL is a commonly used relational database management system that provides powerful and stable database services. However, when using MySQL, we sometimes encounter various connection errors. Among them, error 1115 is a common connection error, which means that the currently logged in user cannot connect to the database.

When encountering MySQL connection error 1115, we can handle it through the following methods.

1. Check username and password: First, we need to make sure that the username and password we entered are correct. You can use the SHOW GRANTS statement in the MySQL command line to view the permissions of the currently logged in user. If the permissions are incorrect or the password is forgotten, you can use the ALTER USER statement to change the password.
2. Check the host address and port number: When connecting to MySQL, we need to provide the correct host address and port number. By default, MySQL uses port 3306. If the host address or port number is incorrect, you can modify it in the connection string.
3. Check the network connection: Connection error 1115 can sometimes be caused by network connection issues. We can try the ping command to check the quality of the network connection to the MySQL server. If the network connection is unstable, we need to fix the network problem or contact the administrator to solve it.
4. Check firewall settings: The firewall may be blocking connection requests to the MySQL server. We can check the firewall settings to ensure that the MySQL port number is not blocked. If the port number is blocked, we need to modify the firewall settings to allow MySQL connection requests to pass.
5. Check MySQL service status: Confirm whether the MySQL service is running. You can use the service mysqld status or systemctl status mysql command on the command line to check the running status of the MySQL service. If the MySQL service is not started, you can use the service mysqld start or systemctl start mysql command to start the service.
6. Restart the MySQL service: If none of the above methods solve the connection error 1115, we can try to restart the MySQL service. You can use the service mysqld restart or systemctl restart mysql command to restart the MySQL service. Sometimes the problem is solved after restarting the service.

In short, when dealing with MySQL connection error 1115, we need to carefully check and eliminate possible problems. These methods cover most possible causes of connection errors and often resolve the issue. If the problem persists, we can refer to the MySQL official documentation or contact the administrator for further assistance.

The above is the detailed content of How to deal with MySQL connection error 1115?. For more information, please follow other related articles on the PHP Chinese website!