Oregon Revised Statutes Justice Courts § 52.120

(1) The summons in an action in a justice court shall be served by a person authorized to serve summons, who shall be compensated for service of the summons, as provided for the service of summons in civil action in a circuit court.

(2) The summons shall be served in the manner provided for the service of summons in a civil action in a circuit court. The summons shall be returned to the justice by whom it was issued by the person serving it, with proof of service or that the defendant cannot be found.