When new physical files, data areas, and data queues are created in a library, it is possible that the system will automatically start journaling changes. You can force journaling to automatically start if the QDFTJRN data area exists in the library where the object is created. The data area's contents specify which object types are to be automatically journaled and which action will cause the object to start journaling.

The TechNote contains a lot of what-if questions and answers that are quite comprehensive.

The IBM Redbook TechNote was published last week; it was written by Peg Levering, Software Engineer, IBM Systems & Technology Group. Thanks Peg for the great TechNote.