Or. Rev. Stat. § 79A.6260
(1) In an action arising from a transaction, other than a consumer transaction, in which the amount of a deficiency or surplus is in issue, the following rules apply:
(c) Except as otherwise provided in ORS 79A.6280, if a secured party fails to prove that the collection, enforcement, disposition or acceptance was conducted in accordance with the provisions of ORS 79A.6010 to 79A.6280 relating to collection, enforcement, disposition or acceptance, the liability of a debtor or a secondary obligor for a deficiency is limited to an amount by which the sum of the secured obligation, expenses and attorney fees exceeds the greater of:
[Formerly 79.0626]