Credentials for adding new clients

I did the omniinetpasswd -add and omniinetpasswd -inst_srv_user and added one client successfully.  When I tried to add 10 clients, DP asked for my credentials 10 times, once for connecting to each server.  Is there a way to push/add multiple clients and only type in your credentials once?  I'm about to add 1300 clients and my fingers hurt just typing the number 1300.

Thanks,

Randy