Jay is right about tenant rights in Oregon. Tenants practically have more rights than the owner in Oregon.
@Derek Moya
To answer your question as directly as possible....NO you will not be kicked out the day after action. No matter who buys it, a private party or the bank. They cannot lock you out of the property the day after the auction. Even if you were a squatter living there illegally they wouldn't be able to do that.
The WORST POSSIBLE CASE if you don't cooperate with the new owner is that they would have to evict you and that would take at lease one month. That's the worst case.
The MUCH MORE PROBABLE case is that the new owner will be very reasonable with you because you seem like a great tenant who just got caught in a bad situation. If the bank takes control of the property then you have even less to worry about and you will probably get to stay there rent free for a while and they might even pay you to move out. Just to confirm what Jay said again......The chances of a retail buyer purchasing this property are about .0000000000001%.
Just go record your lease at the courthouse like @Jay Hinrichs said and then sit back and relax until you hear from whoever purchased the property (either the bank or a 3rd party). I would even go to the auction and see who gets it, if a 3rd party investor buys it you can just go introduce yourself!!