Oregon Revised Statutes Remedies and Special Actions and Proceedings § 36.615

(1) Except as otherwise provided in ORS 36.730, an application for judicial relief under ORS 36.600 to 36.740 must be made by petition to the court. The petitioner and the respondent must pay the filing fees established under ORS 21.135.

(2) Unless a civil action involving the agreement to arbitrate is pending, notice of a first petition to the court under ORS 36.600 to 36.740 must be served in the manner provided by ORCP 7 D. Otherwise, notice of the petition must be given in the manner provided by ORCP 9.