Okla. Stat. tit. 22, § 22-1081: Commencement of proceeding

A proceeding is commenced by filing a verified "application for

post-conviction relief" with the clerk of the court imposing

judgment if an appeal is not pending. When such a proceeding arises

from the revocation of parole or conditional release, the proceeding

shall be commenced by filing a verified "application for post-

conviction relief" with the clerk of the district court in the

county in which the parole or conditional release was revoked. Facts

within the personal knowledge of the applicant and the authenticity

of all documents and exhibits included in or attached to the

application must be sworn to affirmatively as true and correct. The

Court of Criminal Appeals may prescribe the form of the application

and verification. The clerk shall docket the application upon its

receipt and promptly bring it to the attention of the court and

deliver a copy to the district attorney.