CICS® uses the default log stream names unless you provide a JOURNALMODEL resource definition for the journal or log.
If there is a JOURNALMODEL definition for the log, CICS attempts to connect to the log stream named in the definition.
If you define JOURNALMODEL resource definitions for your system logs, ensure that:
If CICS cannot connect to the log stream named in the JOURNALMODEL definition, it attempts to connect to a log stream, using the default name:
userid.applid.journalname
Before you try to use this default log stream name, ensure that
If the log stream is not available (perhaps it has not been defined to MVS) or the definition is not found (perhaps it has not been installed), CICS attempts to create a log stream using the default name:
LSN_QUALIFIER1.LSN_QUALIFIER2.MODEL
where the qualifier fields are based on the JOURNALMODEL definition streamname attribute, as follows:
Once the log stream has been created, CICS connects to it.
Figure 10 shows a graphical representation of the mapping process for general logs.