Again, I have read that as being an issue with MS SQL Server DB usage with ALM but I can't find any reference to it when an Oracle DB is being used. I'm just being asked for the Administration user for the database, for which I use SYSTEM and I've granted that every permission in OEM that I can think of and still no luck.
It might be worth mentioning that I tried the same using Oracle 11G R2 and had the same issue.