Database Connection error - MULTI-DB

Hello
I have spent hours studying different topics in forum on multi-db. It has helped me to get as far successfully(I think) configuring db-config and moving blogs yeah!!
Now I have at the last hurdle, to visit the site...
My page is loading with "database connection error", I have searched for this topic/issue and tried everything that was mentioned but i dont know what I am missing...

db-config.php is as followings
add_db_server('global', 'dc1', 1, 1,'localhost','localhost', 'xxx_wp1global', 'user', 'password');
add_db_server('global', 'dc1', 1, 1,'localhost','localhost', 'xxx_wp1global', 'user', 'password');
....
wp-config.php
define('DB_NAME', 'xxx_wp1global');
/** MySQL database username */
define('DB_USER', 'user');
/** MySQL database password */
define('DB_PASSWORD', 'password');
/** MySQL hostname */
define('DB_HOST', 'localhost');

I am on a reseller cpanel account. site worked fine before installing multi-db and the db username and password worked fine when I did move.
I need your assistance
Thanks