How many bets am I supposed to lose on river this hand?

[Xelent]

I am a very new Omaha player and was playing 6/12 with a full kill at the Wynn when this kill hand came up. My memory is a little fuzzy, but the important part was that I was out of position and the villain had just killed the pot so this was a 12/24 hand. I have JJA2 and the flop comes J99. I lead the flop and villain who is a tight/solid player calls. Turn is a blank and I lead and he calls. On the river another blank comes and he raises me. I am from a hold'em background and I have the 2nd nuts (turn and river were under J). Am I not supposed to even 3 bet him here? If I 3 bet and he 4 bets, do I stop there? Thanks ahead of time.