Here are some of my experiences on Oakmont's greens:
On the 6th hole, I had a 15-footer for birdie, my putt missed and rolled 6.5 feet past the hole. then at the 7th hole, I decided to be conservative and hit it lighter on my 14-foot par putt, but it ended up 6 feet short. On the 9th hole, my 3rd shot went 10 feet over the pin, then rolled back to only 4 inches from the hole. Then on the 10th hole, my chip shot from the front of the green rolled 15 feet past the hole. Then on the 16th hole I had a 25-footer for birdie, but my putt went 12 feet past the hole.