so i just started playing PL/Fixed Limit Omaha regularly a couple weeks ago and i'm still pretty green on the nuances of the game, but i was wondering if there is a good time to raise pre-flop in any position? i've read that omaha is more of a post-flop game and it's better to limp in with a hand, but there has to be some exceptions right?

appreciate the help
-m

the answer is completely different in fixed limit verse pot, as well as o/8 verse omaha high.

I never raise in EP in PLO. I often (re)raise in late position, specially if the guy UTG raises - I know he doesn't play much.

I 50/50 raise Aces in PLO but am willing to push it all when I do if someone comes back over me. I usually raise two suited connected card like 7h, 9d, 10d, jh, or double suite with ace, such as Ah, 7h, 8d, 9d. I often raise with double pair hands knowing I will flop a set 25%.

fixed limit.... i rarely play this. Only PLO and limit hold'em....

For PLO, the flop is what is going to determine how you play, not preflop. In my opinion the only hand worth going all in with is suited aces, not even unsuited aces. So you can essentially raise without even looking at your cards(I know people who do this every hand), as long as you're deep stacked.
In limit Omaha(high only), at a full table you're going to have to make the nuts. That means playable hands are a suited ace(side cards matter little), big rundown hands(suits matter little as you are trying to make a big straight or boat, and large pairs. Therefore, raising hands for me are suited ace with working side cards(A Q J T ), or big double pairs(K's and T's). According to Cappelleti, around 35% of hands are won with a boat, 30% with a flush and 25% with a straight. This applies to the game I used to play in: 15-30 limit high only in New Orleans, where you did not bluff, as every river was called. Different games would require strategic adjustments.

I don't mind pre-flop aggression in plo. most people are pretty passive pre-flop and you can pick up a lot of pots and pick up table image. But, having said that, your decisions pre-flop in omaha should be made with position in mind, even more so than in texas hold 'em. you can afford to raise in situations in late position that should only be called in early position.

thanks a lot. i appreciate you guys helping me out.

now if i can just get over this run of bad cards, i'll be set.

peace.

-m

In PL, part of the reason for limping is that no hand is a big favorite over another. Another part is that a raise often means AA, and you give too much away. Raising in EP is dangerous because you might have to call several re-raises with a not-so-strong-after-all hand, but more importantly now you have to hit the flop or a later position player can steal the pot with just about anything and you can't call.

That said, if you raise more often in LP, you're going to get a fair amount of callers, and you'll have an aggressive image even though you're still only raising good hands.

Generally, 1)you should never raise, 2)raise with alot of different hands. The biggest mistake alot of beginners make is only raising with aces (kings) as well. This makes it very easy for an observant opponent to play postflop against. Whatever you do, just make sure you vary your play. Play a half hour raising nothing, then the next half hour raising your strong hands from MP-button (Raising from EP is a style choice but I tend to stay away from it).