Okla. Stat. tit. 22, § 22-512: Certain objections, how taken

When the objections mentioned in Section 504 appear upon the

face of the indictment or information, they can only be taken by

demurrer, except that the objection to the jurisdiction of the court

over the subject of the indictment or information, or that the facts

stated do not constitute a public offense, may be taken after the

arraignment of the defendant, or may be taken at the trial, under

the plea of not guilty, and in arrest of judgment.