Okla. Stat. tit. 22, § 22-1084: Evidentiary hearing - Findings of fact and conclusions of

law.

If the application cannot be disposed of on the pleadings and

record, or there exists a material issue of fact, the court shall

conduct an evidentiary hearing at which time a record shall be made

and preserved. The court may receive proof by affidavits,

depositions, oral testimony, or other evidence and may order the

applicant brought before it for the hearing. A judge should not

preside at such a hearing if his testimony is material. The court

shall make specific findings of fact, and state expressly its

conclusions of law, relating to each issue presented. This order is

a final judgment.