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I think if I was in charge of the armed forces in Oahu on 12/07/1941 and I had found out that for sure the attack was coming in three hours I probably think there was not time or the means to turn the attack into a failure.
One thing I think I would do is move all those fighter planes parked wing to wing apart as much as possible. I would send them up when the proper time would be to do so. Maybe that might mean I would not have to seperate them first, maybe not. I think I would have the ships in the harbor run aground and abandoned. Some of them would get beat up pretty good, but I think not to the extent of OTL. And the casualties would be drastically be reduced.