DFHBRNSF at CICS termination

During the normal termination of a CICS® router region, new Link3270 requests are rejected and existing Link3270 facilities are released. When all facilities have been released, the DFHBRNSF name ranges associated with the router region are freed.

It is possible that the freeing of the DFHBRNSF name ranges will fail. For example, if file DFHBRNSF is remote, the shutdown transaction CESD breaks the connection to the file owning region before the name ranges have been freed. If this happens an error message will be issued. The name ranges are only freed when the CICS region is restarted and a Link3270 transaction has run in that region.

If the CICS termination is immediate, the Link3270 request is rejected with return code BRIH-CICS-TERMINATION, but the Link3270 facilities and DFHBRNSF name ranges associated with the facilities are not released. The name ranges are only freed when the CICS region is restarted and a Link3270 transaction has run in that region.