Journalling of Logical Files in V6R1

We were surprised to see logical files in the file list when looking at WRKJRNA on V6R1. We asked IBM why they just appeared and how could we turn journalling off for them as we don’t want them to be journalled.

IBM came back and stated that we could not end journalling for Logical files, as soon as the Physical file is journalled all logical files built over that physical file would automatically be journalled. We did not get a full explanation of why or what the impact is for this new feature in terms of CPU utilization, but we have just seen a redbook technote which explains the reasoning behind the new feature (Its not really new, they simply opened the view up in the interfaces).


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