Journal records
Each journal is identified by a name or number known as the journal identifier. This number can range from 1 through 99. The name DFHLOG is reserved for the journal known as the system log.
When a journal record is built, the data is moved to the journal buffer area. All buffer space and other work areas needed for journal operations are acquired and managed by CICS®. The user task supplies only the data to be written to the journal. Log manager is designed so that the application programmer requesting that output services does not have to be concerned with the detailed layout and precise contents of journal records. The programmer has to know only which journal to use, what user data to specify, and which user-identifier to supply.