Okla. Stat. tit. 58, § 58-1106: Final account and petition - Date, time and place -

Notice - Hearing.

The court shall thereupon fix a date, time and place for the

final account and petition, which date shall be not less than ten

(10) nor more than thirty (30) days after the filing of the final

account and petition. There shall be notice given by mailing to the

heirs and contingent legatees and devisees of the decedent, whose

names and addresses are known, not less than ten (10) days prior to

the date of the hearing and by publication one time in a newspaper

in the county not less than ten (10) days prior to the hearing.

Proof of such notice shall be made and filed as in other estate

proceedings.

The hearing shall be held and findings and orders made, filed

and recorded in the same manner as in other estate proceedings.