By whom subpoena is served. A subpoena may be served by the defendant or any other person over 18 years of age and shall be served by any sheriff or constable within the county or district of the sheriff or constable, as the case may be, when delivered to the sheriff or constable for service, either on the part of the prosecution or of the defendant. [Formerly 139.090; 1977 c.746 §7]

ORS 136.585 — under Chapter 136.