With most of the world using dynamic websites, databases have become a regular part of the web hosting experience. Even if your database always works and run smoothly, you may have users on your dedicated server who are not so fortunate. Because many applications, scripts, and users may attempt to access the database differently, it is important to go through systematic steps to find a solution. Here are 7 steps you can take to find out what went wrong.
1. Check the username and password. This one may seem like a no-brainer, but the user you think is set to control a database may not actually even exist or may not have the password you think it has. This is particularly true with automatically created users.
2. Make sure you have the correct hostname. Many scripts will use “localhost” by default, but that may or may not work on your server. If you are accessing it remotely, double check to make sure you have the right one.
3. Test the connection string. If you wrote your code yourself, this is particularly important. You may just have a typo.
4. Check the database server itself to make sure it is actually running without errors.
5. Make sure the database you want actually exists. If it was created automatically, that process may have failed.
6. Check firewall settings for remote connections. When trying to connect remotely, you will need the right port open (usually 3306 for MySQL). Be sure to configure the firewall for both the server and the computer you are using to connect.
7. Ensure you have the necessary privileges. In some cases, the username and password may be correct, but that user may not have proper access to the database. Only the root administrator can grant the necessary privileges.