Okla. Stat. tit. 12, § 12-688: Taking account or proof or assessment of damages on

default or decision of issue of law.

If the taking of an account, or the proof of a fact, or the

assessment of damages, be necessary to enable the court to pronounce

judgment upon a failure to answer, or after a decision of an issue

of law the court may, with the assent of the party not in default,

take the account, hear the proof, or assess the damages; or may,

with the like assent, refer the same to a referee or master

commissioner, or may direct the same to be ascertained or assessed

by a jury. If a jury be ordered, it shall be on or after the day on

which the action is set for trial.