it takes a while, you will hear from the court.
According to this 30-90 days.
Ohio Simplified Divorce Procedures
Both spouses may jointly file a petition for dissolution of marriage. The petition must: (1) be signed by both spouses and (2) have attached to it a separation agreement which provides for: [a] division of property; spousal support (including, if the spouses desire, the authorization of the court to modify any spousal support terms); and [c] custody, visitation, and child support, if there are any minor children. The spouses may include a parenting plan in the agreement. Between 30 and 90 days after filing such a petition, both spouses must appear in court and state under oath that he or she: (1) voluntarily signed the agreement; (2) is satisfied with the agreement; and (3) seeks dissolution of the marriage. In addition, settlement agreements are also authorized by statute and may be used in a divorce proceeding. A sample divorce complaint form is contained in Ohio Rules of Civil Procedure, Appendix of Forms, Form #20. In addition, separation agreements are specifically authorized. Finally, there may be local court rules which apply to divorce proceedings in Ohio. [Ohio Revised Code Annotated; Sections 3105.03, 3105.10, and 3105.61-65 and Ohio Rules of Civil Procedure; Appendix of Forms].