How to fix error establishing database connection in WordPress?

If you get a page featuring the message “Error Establishing Database Connection,” this means that there is a problem with the connection to your database and there could be a number of reasons for this. The following are possible reasons and solutions.

Incorrect wp-config.php Information

“Error establishing a database connection” is usually caused by an error in your wp-config.php file. Access your site in your FTP client. Open up wp-config.php and ensure that the following are correct:

• Database name
• Database username
• Database password
• Database host

Problems with Your Web Host

The next step is to contact your web host. The following hosting issues may be causing the problem:

• Your database has met its quota and has been shut down.
• The server is down.

Contact your hosting provider to see if either of these issues is causing your problem.

Compromised Website

If you have checked wp-config.php for errors, and confirmed with your host for hosting issues, it is possible that your site has been hacked.

• Scan your site to ensure that it hasn’t been compromised.