Oregon Revised Statutes Procedure in Criminal Matters Generally § 136.765

(1) Pleading the enhancement fact in the accusatory instrument; or

(2) Providing written notice to the defendant of the enhancement fact, and the state's intention to rely on it, no later than 60 days after the defendant is arraigned on an indictment, waives indictment or is held to answer following a preliminary hearing, or 14 days before trial, whichever occurs earlier, unless the parties agree otherwise or the court authorizes a later date for good cause shown.