Oregon Revised Statutes Procedure in Civil Proceedings § 12.130

An action upon a statute for a penalty given in whole or in part to the person who will prosecute for the same, shall be commenced within one year after the commission of the offense; and if the action is not commenced within one year by a private party, it may be commenced within two years thereafter, in behalf of the state, by the district attorney of the county where the offense was committed or is triable.