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Here is one last warning. The Job History Search Display (4.4) requires that the system journals SMF record types 4 and 5. Type 4 records are produced for job steps. Type 5 records are produced for the job itself. Any data set activity shown for the job requires the recording of SMF record types 14, 15, and 17 for non‑VSAM files, and SMF types 60 through 69 for VSAM. The combined record, SMF type 30, can be used in lieu of the other data set records. If any of these records are missing, the display you see is incomplete. Because the collection of SMF records can be turned on and off, you have to be careful about jumping to conclusions about what you see in the display. Furthermore, the IEFU83 and IEFU84 SMF exits can cancel SMF records, so be sure to check the SMF Options (1.5.1) and Exits (1.5.3) displays.
See the SMF section in the chapter “Management Information” and the System Review Checklist for specific tests you can use to verify the integrity of SMF.
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