Error to configure Wordpress Multisite

Question

I installed the wordpress on a server, and it worked all right, meanwhile when I try to add the function:

define('MULTISITE', true);

All pages appear the following error:

"Error when establishing a connection to the Database"

Apparently wordpress is not creating some necessary tables, but it is a new installation and when I comment the line of Multisite it works normally.

Answer 1

I already managed to solve, in fact was following a tutorial that was not right, it was necessary to add only the following code initially:

define('WP_ALLOW_MULTISITE', true);

And run the installation by admin panel Tools -> Network Installation, and then yes paste the text it generates, which has the statement of define('MULTISITE', true);