Okla. Stat. tit. 22, § 976
If the defendant has been convicted of two or more offenses, before judgment on either, the judgment may be that the imprisonment upon any one may commence at the expiration of the imprisonment upon any other of the offenses. Provided, that the sentencing judge shall, at all times, have the discretion to enter a sentence concurrent with any other sentence.
R.L. 1910, § 5957; Amended by Laws 1985, SB 13, c. 20, § 2, eff. November 1, 1985; Amended by Laws 1997, HB 1213, c. 133, § 68 (effective date amended to July 1, 1999, by Laws 1998, 1st Extr. Sess., HB 1002, c. 2, §§ 23-26, emerg. eff. June 19, 1998) (superseded document available); Amended by Laws 1999, 1st Extr. Sess., HB 1009, c. 5, § 19, emerg. eff. July 1, 1999 (superseded document available).