Beagle, looks like Thief13x is in the US and the FAA oral is a little bit more involved than that.
Thief13x, don't worry too much about the oral. Its the same subject matter as in the exams, you just don't get multi choice answers. If you got a good exam mark, you'll probably get a fairly quick oral. Otherwise, expect to be questioned on the bits of the exam you got wrong. Make sure you know what all the symbols on the map mean, especially the various information round the VOR boxes like FSS frequencies and whether the VOR has audio with weather broadcasts. Brush up on enroute weather sources. Make sure your instructor gives you a good briefing. Ask other students what they got asked. Most DPEs have standard questions they use to test your knowledge.
But FAA or JAA, what Beagle says is right - your examiner wants you to pass and wouldn't be sitting there unless your instructor thinks you can do it.