Oregon Revised Statutes Procedure in Criminal Matters Generally § 137.123

(1) A sentence imposed by the court may be made concurrent or consecutive to any other sentence which has been previously imposed or is simultaneously imposed upon the same defendant. The court may provide for consecutive sentences only in accordance with the provisions of this section. A sentence shall be deemed to be a concurrent term unless the judgment expressly provides for consecutive sentences.

(2) If a defendant is simultaneously sentenced for criminal offenses that do not arise from the same continuous and uninterrupted course of conduct, or if the defendant previously was sentenced by any other court within the United States to a sentence which the defendant has not yet completed, the court may impose a sentence concurrent with or consecutive to the other sentence or sentences.

(3) When a defendant is sentenced for a crime committed while the defendant was incarcerated after sentencing for the commission of a previous crime, the court shall provide that the sentence for the new crime be consecutive to the sentence for the previous crime.

(4) When a defendant has been found guilty of more than one criminal offense arising out of a continuous and uninterrupted course of conduct, the sentences imposed for each resulting conviction shall be concurrent unless the court complies with the procedures set forth in subsection (5) of this section.

(5) The court has discretion to impose consecutive terms of imprisonment for separate convictions arising out of a continuous and uninterrupted course of conduct only if the court finds: