Multi-DB and DB for VIP

I do all steps, but DB for VIP doesn't work
1) I created new blog
2) I pasted
add_db_server('vip1', 'dc1', 1, 1,'localhost', 'localhost', 'NAME_vip1', 'NAME_U7yE', 'PASS');
add_vip_blog(3263, 'vip1');

There is error conection to DB.

DB for VIP has the same user DB like others 256 DB's.