Woods played the back nine early Sunday morning with members and swing coach Hank Haney, then stopped for lunch and played the front nine in the afternoon.
The U.S. Open, to be played June 13-16, returns to Oakmont for the first time since 1994. It is one of the few classic championship courses in the United States that Woods had not played. He first qualified for the U.S. Open in 1995 as an amateur.
Woods said he thought Oakmont as a members' course was far tougher than Winged Foot, where last year he missed the cut for the first time in a major as a pro.
On the par-3 eighth, he played the back tee at 288 yards, and hit 3-wood to the middle of the green.
"I refuse to hit driver," Woods said, smiling. "It's against my religion."