Fix “Error Establishing a Database Connection” in WordPress

If you’ve ever managed a WordPress website, you’ve probably seen the dreaded” Error Establishing a Database Connection” message at least once. Getting any WordPress error is the worst. It’s a frustrating issue, but don’t worry! This comprehensive guide will walk you through multiple methods to get your website up and running again.

1. Double Check Your Database Credentials

In many cases, the error occurs due to incorrect database credentials in your wp-config.php file.

  • Access your website files using FTP or File Manager in your hosting panel.
  • Open wp-config.php.
  • Ensure the database name, username, password, and host are correct.

2. Test the Database Connection

You can create a simple PHP file to test the connection.

  • Create a file named testconnection.php.
  • Copy and paste the following code:

Copy codedefine(‘DB_NAME’, ‘database_name_here’); define(‘DB_USER’, ‘username_here’); define(‘DB_PASSWORD’, ‘password_here’); define(‘DB_HOST’, ‘localhost’);

Upload this to your server and access it through the browser. If there’s an error, it should give you more specifics about the connection issue.

3. Repair the Database

WordPress has a built-in feature to repair the database.

  • Add define(‘WP_ALLOW_REPAIR’, true); to your wp-config.php file.
  • Visit
  • ¬†Click on either “Repair Database” or “Repair and Optimize Database.” After the process, remove the line you added in wp-config.php.

4. Check If Your Database Server is Down

If there’s a problem with your web host’s server, you may need to get in touch with your hosting provider. They may be experiencing heavy traffic, undergoing maintenance, or having other technical issues.

5. Restore From a Backup

If you’ve recently backed up your WordPress website (and you should regularly do so!), consider restoring it. This can sometimes quickly resolve the issue, especially if it was caused by a recent change.

6. Increase PHP Memory Limit

Low server memory can lead to database connection errors. To increase the PHP memory:

  • Edit the wp-config.php file.
  • Add define(‘WP_MEMORY_LIMIT’, ’64M’);
  • Save and upload.

7. Check for Corrupted Files

Sometimes, files, especially after an update, can get corrupted.

  • Re-upload core WordPress files. Download a fresh copy of WordPress from
  • Replace the wp-includes and wp-admin directories via FTP.
  • Do not replace wp-content, as it contains your themes, plugins, and uploads.

8. Deactivate All Plugins

It’s possible a plugin is causing the error. Access your site via FTP and navigate to /wp-content/. Rename the plugins directory to something like plugins_old. This will deactivate all plugins. If the site works, rename it back to plugins and activate them one by one to identify the culprit.

In conclusion, “Error Establishing a Database Connection” can be a headache, but with these steps, you can methodically troubleshot and resolve the issue. Always remember to keep regular backups, maintain updated plugins/themes, and monitor your site’s health for a smooth WordPress experience. If all else fails, consider seeking assistance from a WordPress expert or your hosting provider.

More questions regarding WordPress or a WordPress error? Contact Beanstalk and let’s chat.