Hey Ron, Oak indeed is a very hard wood to cut. 2" is extremely tough, but I have cut it before. For this wood I would go with a #12 size blade, weather a FD or Olsen blade.
If I had a supply of 2" oak, I would resaw and plane it down to 3/4", 1/2" and 1/4" thicknesses As I have a band saw and a planer!