Oregon Revised Statutes Crimes and Punishments § 161.239

(a) The crime committed by the person was a felony or an attempt to commit a felony involving the use or threatened imminent use of physical force against a person; or

(b) The crime committed by the person was kidnapping, arson, escape in the first degree, burglary in the first degree or any attempt to commit such a crime; or

(c) Regardless of the particular offense which is the subject of the arrest or attempted escape, the use of deadly physical force is necessary to defend the peace officer or another person from the use or threatened imminent use of deadly physical force; or

(d) The crime committed by the person was a felony or an attempt to commit a felony and under the totality of the circumstances existing at the time and place, the use of such force is necessary; or

(e) The officer's life or personal safety is endangered in the particular circumstances involved.