I wouldn't do it. I'd get a subscription to Safari for all the tech books I could read and teach myself. I don't know about Oracle certifications, but at least a few years ago one could pass all the Microsoft certifications using "brain dumps" if need be. I think I took about 10 Microsoft exams around 2001, including the ones on SQL Server, to get Excelsior College credits. I had no problems passing them on the first try even though I did fail a few of the old ICCP exams.