Okla. Stat. tit. 12, § 12-849
Examination under oath - Answer by corporation
The party or witness may be required to attend before the judge,
or before a referee appointed by the judge. When a corporation is
required to attend, the answers on its behalf shall be made by an
officer thereof. All examinations and answers before a judge or a
referee must be on oath.
R.L. 1910, § 5197. Amended by Laws 1965, c. 300, § 5.