Okla. Stat. tit. 58, § 58-709: Trials and findings - Judgments, how enforced

All issues of fact joined in a probate proceeding must be tried

by the court, and in all such proceedings, the party affirming is

plaintiff, and the one denying or avoiding is defendant. After the

hearing, the court shall give in writing the findings of fact and

conclusions of law, and judgments thereon, as well as for costs, may

be entered and enforced by execution or otherwise, by the court, as

in civil actions. If the issues are not sufficiently made up by the

written pleadings on file, the court, on due notice to the opposite

party, must settle and frame the issues to be tried, and upon which

the court may render judgment.