When you identify the version of JES in use, check the z/OS options and parameters. Most options and parameters are stored in members of the system parameter library, or logical Parmlib. Please note that in most cases, documentation that refers to SYS1.PARMLIB actually refers to the logical Parmlib, which can be one or more parameter library data sets concatenated together to form a single library. For instance, the SMF options are stored in the SMFPRMxx member of parmlib, where xx is a two‑character ID chosen by the data center. One of the options that can be included in the SMFPRMxx member is whether to include an SMF ID in each SMF record. You can find this information on the CA Auditor System Overview Display.
Placing an SMF ID in each SMF record lets the data center trace SMF records back to the system they were recorded on. Although system identification is not important in a single system environment, it is most useful in a multiple system environment because, without it, it is difficult to trace SMF records back to the system where they were created.
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