ORS § 548.355
The procedure in the circuit court under the provisions of ORS 548.340 to 548.350 shall be in the nature of an action in rem not triable by right to a jury. Any holders of any evidences of indebtedness affected by any such court procedure provided for in those sections, or any other interested party, may appeal to the Court of Appeals at any time within 30 days after the rendition of the judgment of the circuit court. The court inquiring into the regularity, legality or correctness of any of such proceedings shall disregard any error, irregularity or omission which does not affect the substantial rights of the parties, and may approve the proceedings in part and disapprove the remainder. Costs in the proceeding may be allowed and apportioned between the parties in the discretion of the court.
ORS 548.355