Okla. Stat. tit. 12, § 12-411: Privilege

No testimony given by a witness before the House of

Representatives or the Senate, or before any committee established

by a Resolution of the House, or Senate, or Concurrent Resolution of

the two Houses of the Legislature, shall be used as evidence in any

criminal proceeding against him in any court, except in a

prosecution for perjury committed in giving such testimony. But an

official paper or record produced by him is not within the

privilege.