The “Error establishing a database connection” is one of the most serious WordPress errors because your entire site goes offline. It means WordPress cannot connect to your MySQL database. Here’s how to fix it.
1. Check Your wp-config.php Credentials
Open your wp-config.php file and verify the DB_NAME, DB_USER, DB_PASSWORD, and DB_HOST values are correct. A wrong password or hostname is the most common cause of this error.
- DB_NAME – your database name
- DB_USER – your database username
- DB_PASSWORD – your database password
- DB_HOST – usually localhost
2. Check the Database Server Status
Sometimes your MySQL server has crashed or is overloaded. Check with your hosting provider or restart the MySQL service.
3. Test Database Credentials in phpMyAdmin
Log into phpMyAdmin using the exact same credentials in wp-config.php. If they fail, update your wp-config.php or reset the database password in cPanel.
4. Fix the DB_HOST Value
Some hosts require a specific hostname instead of localhost. Check your hosting documentation – hosts like SiteGround use a different DB_HOST value.
5. Repair the Database
Add this line to wp-config.php to enable database repair: define(‘WP_ALLOW_REPAIR’, true); Then visit yoursite.com/wp-admin/maint/repair.php.
6. Restore the Database from Backup
If your database is corrupted, restore it from your latest backup. This is why regular backups are essential.
Get Expert Help
Database errors are critical. If you are unsure, contact Finggu Infotech for professional WordPress repair and database recovery services.