AC marine in Auburn, kind off the beaten path but has lots of choice for minnows, shiners, suckers
I don't know the area, but it looks like there are some bait shops in that general area, based off the map.
Sorry to say...but negative. I am an avid angler and own a business on the west end of Oneida. There is no shops on the north shore(route49), till Cleveland (Apps landing). That is 3/4 of the way down the lake. South shore Had River Rat in Brewerton, but I'm not so sure they are still open. Gander Mtn. in Cicero is the next venture. Well of the beatin path for locals. Someone needs to make a viable bait shop around the west end, and I've been thinking about giving it a try.