When the right to require the performance of the act is clear, and it is apparent that no valid excuse can be given for not performing it, a peremptory mandamus may be allowed in the first instance; in all other cases, the alternative writ must be first issued.
Okla. Stat. tit. 12, § 1454
When peremptory writ to issue
R.L. 1910, § 4910.
Official source: Oklahoma Legislature. Reproduced from public-domain Oklahoma statutes; confirm against the official source for the current text. Not legal advice.