DFHFCQS (file control RLS quiesce send transaction)

DFHFCQS is the VSAM RLS Quiesce Send module, running under a dedicated CFQS system transaction. It provides code to take quiesce requests from another task and pass them to SMSVSAM. As DFHFCQS runs under a system transaction, it has full transaction environment which enables it to invoke API-capable global user exits, or to call parts of file control that reference the TCA. DFHFCQS is called from DFHFCQT, the quiesce system transaction module, if the transaction id under which DFHFCQT was started is ’CFQS’.