Oregon Revised Statutes Justice Courts § 51.250

(1) The certificate of election of the person.

(2) An oath of office, by the person subscribed, to the effect that the person will support the Constitution of the United States and the Constitution of Oregon and will faithfully and honestly perform the duties of the office.

(3) Also an official undertaking, duly approved by the county court or board of county commissioners in the penal sum of $2,500; provided, that the official undertaking of a justice of the peace in any district in which is located the county seat, or any part thereof, shall be in such greater penal sum, not exceeding $10,000, as the court or board shall designate.