Error establishing a connection to the database

This article explains how to diagnose and fix the “Error establishing a connection to the database” on WordPress sites. It details the most frequent causes — incorrect credentials in the wp-config.php file, corrupted database, server failures, or damaged core files — and proposes practical steps to repair the connection, from checking credentials and permissions to repairing the database with specific commands.

It also addresses preventive measures to avoid the error from recurring, such as maintaining automatic backups, optimizing the database, using reliable themes and plugins, and choosing a good hosting provider.

Please review our guide: https://sitioshispanos.blog/wordpress/wordpress-como-solucionar-el-error-al-establecer-una-conexion-con-la-base-de-datos/