Oregon Revised Statutes Remedies and Special Actions and Proceedings § 30.645

(1) Except as provided in subsection (2) of this section, the court may not waive or defer an inmate's fees or court costs under ORS 30.643 if the inmate has, on three or more prior occasions while incarcerated or detained in any correctional facility, filed an action against a public body in a court of this state that was dismissed on the grounds that the action:

(2) The court may waive or defer fees or court costs of an inmate who would not otherwise be eligible for waiver or deferral under subsection (1) of this section if the inmate establishes in the application for waiver or deferral that the inmate is in imminent danger of serious physical injury and the action against a public body is needed to seek relief from that danger.