Log data accessible to DFHJUP

DFHJUP is able to read both active and inactive data on the log stream.

Active data is data that has not been deleted via an MVS™ IXGDELET request. Inactive data is data that has been deleted via an IXGDELET request, but which has not yet been physically deleted by MVS because of the retention period specified for the log stream.

As mentioned in Managing the size of log streams, you can use the MVS RETPD parameter to specify a retention period for a log stream. If you specify a RETPD value greater than zero, MVS physically deletes data from the log stream only when both the following conditions are met:
  1. The data is older than the retention period.
  2. Either of the following applies:
    • The data has been marked for deletion by an application (such as CICS® or a utility program) issuing an IXGDELET request.
    • AUTODELETE(YES) is specified for the log stream.

For definitive information about using the RETPD and AUTODELETE MVS parameters to automate the log tail deletion process, see Managing auxiliary storage.