Hola, he configurado bien el archivo config.php y lo he subido a mi espacio pero ahora me da este error

Error establishing a database connection

This either means that the username and password information in your wp-config.php file is incorrect or we can't contact the database server at localhost. This could mean your host's database server is down.

• Are you sure you have the correct username and password?
• Are you sure that you have typed the correct hostname?
• Are you sure that the database server is running?

If you're unsure what these terms mean you should probably contact your host. If you still need help you can always visit the WordPress Support Forums.

¿Como se configura la base de datos para que me deje instalar wordpress?. Tengo la base de datos activa pero no la detecta.

Saludos y gracais

fijate bien enlos datos que te da el host para accesar a la DB.

ya que no todos utilizan "Localhost", hay algunos que usan "sql12.host.com" o algo parecido.
y verifica que el User esta asociado al esquema de base, y por ultimo ve que el pass sea el correcto.