How to resolve connection failure to MySQL database in Navicat?
There are several common solutions for troubleshooting failures when connecting to the MySQL database.
- Make sure that the MySQL server has been started. To start the MySQL server, enter mysql.server start (MacOS/Linux) or net start mysql (Windows) in the terminal or command prompt.
- Check if the MySQL server is running on the correct port. By default, the MySQL server runs on port 3306. In the connection settings of Navicat, verify that the port number is correct. If the MySQL server is running on a non-default port, manually specify the correct port number.
- Check the network connection to ensure your computer can communicate with the MySQL server. Try using the ping command to test if the server’s IP address is reachable.
- Check the username and password. Make sure you have entered the correct username and password in the Navicat connection settings. If you forgot the password, you can reset it using the mysqladmin command in MySQL.
- Check the firewall settings. If you have a firewall on your computer, make sure to allow Navicat to access the MySQL server through the firewall. You can try temporarily disabling the firewall to test if it is causing the issue.
- Check the MySQL server configuration file. Sometimes errors or inconsistent settings in the MySQL configuration file can lead to connection failures. Verify that the relevant settings in the configuration file (usually my.cnf or my.ini) are consistent with those of Navicat.
- Try using other tools to connect to the MySQL database. If Navicat is unable to connect, you can try using other MySQL client tools such as MySQL Workbench to establish the connection. If other tools also fail to connect, it may be necessary to check the configuration or log files of the MySQL server for more information.
If the aforementioned methods still cannot solve the problem, it is recommended to refer to the official documentation or consult the technical support of Navicat and MySQL.
