The CICS® VR server uses temporary history data sets which are dynamically allocated with ddname DWWHIST.
The data from these data sets is flushed
to the current DWWMSGx data set when the history scavenger runs. The
history data sets are not catalogued.
You can run the history scavenger dynamically if the
hourly run is not sufficient by using the SETSMS command,
or using the CICS VR
ISPF dialog interface, to specify SCAVENGE(HISTORY) in the
CICSVR_GENERAL_CONTROL() string.