Ohio Rev. Code Ann. § 1907.37

When it appears to a judge of a county court that a witness was served with a subpoena to appear and give testimony before him in any matter in which he has authority to require the witness to appear and testify, that the testimony of that witness is material, and that he refuses or neglects to attend in conformity with the subpoena, the judge shall issue a warrant to arrest the witness for the purpose of compelling his attendance and punishing his disobedience .