Example - maintaining multiple log streams in the same coupling facility structure

Figure 1 shows a configuration where you can maintain individual logs for each system logger application in separate, independent log streams that map to the same coupling facility list structure. You might, for example, want to have your logrec log stream and OPERLOG log stream map to the same coupling facility structure.

Figure 1. Example: Maintaining Multiple Log Streams in the Same Coupling Facility Structure

Example of Maintaining Multiple Log Streams in the Same Coupling Facility Structure

Some of the key points this example shows are:

Although they reside in the same coupling facility structure, the two log streams are separate. The data from the two log streams is not merged.
System logger automatically moves the oldest log data from the coupling facility to DASD when the data hits the installation-defined thresholds for the coupling facility list structure for a log stream.