MDM repository login

I cannot login to the repository created manually in the MDM console.

I can login to the DBMS by the user SYSTEM from the console but if i use the same login credentials it doesnt work and says 'Login failed'.

MDM version 5.5 sp04

Database - ORACLE 10.2.01

I created the repository by right clicking on the server name in the console.

It only asked me the repository name and the port.

Where do i get these login credentials from?

Thanks,

Alwyn