Define Optional VTAM System Resources

Beginning with UPSTREAM z/OS 3.9.1, the UPSTREAM started task and USTBATCH may now use TCP/IP to initiate requests. The SNA definitions described below are no longer required but may still be used. The SNA definitions are required for users of UPSTREAM z/OS 3.9.0 and earlier and are listed here for their reference.

To define to VTAM the application IDs that are used by UPSTREAM, tailor the “USTAPPL” member from the Installation Control Library (ICL) and copy it into your SYS1.VTAMLST data set.

The member name in VTAMLST may be USTAPPL or any name of your choice. You can activate it with the console command “V NET,ACT,ID=membername”. You probably want to add the member name to the “ATCCONxx” member of VTAMLST in order that the UPSTREAM application names are automatically activated when VTAM is started.

  • The first application, UPSTREAM, is used by the UPSTREAM started task. If you change the application name, you must also change the name on the APPLID parameter in your UPSTREAM configuration (see “APPLID” in Section 2.18.1 UPSTREAM MAIN Configuration Options).
    • The other applications, UPSTR*, are used by USTBATCH (USTBATCH Parameter Reference). If you change the prefix, you also need to specify that prefix on the APPLPREF= statement input to USTBATCH.

On the APPL statements, DLOGMOD= defines the default log mode table entry name that is used when UPSTREAM establishes a session to a Client, or when USTBATCH establishes a session to UPSTREAM. #INTER is a mode table entry provided by IBM (in ACF/VTAM V3.4 and above, in the default mode table ISTINCLM) and can be used with UPSTREAM that overrides the parameters in #INTER to allow 4K RU sizes and pacing values of 24.

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