Okla. Stat. tit. 68, § 251

Notwithstanding the provisions of any statute or court rule to the contrary the Tax Commission may file petitions and applications in the various district courts of this state to initiate actions authorized in Section 201 et seq. of Title 68 of the Oklahoma Statutes, for collection of delinquent state taxes by mailing same to the respective court clerk of the district courts of this state. Upon receipt of such petition or application, the court clerk shall cause hearings to be set as required by law, and shall cause the necessary summons or notice to be issued and served by sheriff or mail, as set forth in the summons or notice.