Okla. Stat. tit. 12, § 12-1033: Proceedings by petition, when - Summons

If more than thirty (30) days after a judgment, decree, or

appealable order has been filed, proceedings to vacate or modify the

judgment, decree, or appealable order, on the grounds mentioned in

paragraphs 2, 4, 5, 6, 7, 8, and 9 of Section 1031 of this title,

shall be by petition, verified by affidavit, setting forth the

judgment, decree, or appealable order, the grounds to vacate or

modify it, and the defense to the action, if the party applying was

defendant. On this petition, a summons shall issue and be served as

in the commencement of a civil action.

R.L. 1910, § 5269. Amended by Laws 1999, c. 293, § 11, eff. Nov. 1,

1999