May be too late now, but in the future remember this. Fly every flight to the precision of a checkride. That way, when the checkride comes around, its just like any other flight. As for the oral, they will stump you at some point, and they dont expect you to know every single thing. Just know where to find the information and have it readily available and it should be no problem. The examiner wants to pass you, its up to you to allow him or her to do so.