Defining CICS regions as applications to SNA

To use SNA LUs with CICS®, ensure that your CICS regions are defined to SNA before you attempt to run them.

To define your CICS regions to SNA as SNA application programs:
  1. Define SNA application program minor nodes for your CICS regions, by specifying APPL definition statements in a member of the SYS1.VTAMLST library or your own user.VTAMLST library.
  2. Issue a VARY ACT command to activate the APPL definitions and enable the CICS regions to connect to SNA.
  3. Ensure that you have properly defined your SNA LUs for connection to CICS. You must do so if you intend using CICS autoinstall. For those LUs for which you want to use autoinstall, code LOGON mode table entries that match the model TYPETERM and TERMINAL definitions that CICS uses. You can either code your own autoinstall models, or use the CICS-supplied model definitions that are generated for you when you initialize the CICS system definition data set.

Define SNA application program minor nodes for your CICS regions, by specifying APPL definition statements in a member of the SYS1.VTAMLST library or your own user.VTAMLST library. user.vtamlst will ONLY work if user.vtamlst is a concatenated data set in the //VTAMLST DD in the VTAM PROC, usually found in SYS1.PROCLIB or SYS1.IBM.PROCLIB.

For further information about defining SNA resources, see z/OS Communications Server: SNA Network Implementation Guide and z/OS Communications Server: SNA Resource Definition Reference.

The following topics provide more detailed information about defining your CICS regions to SNA.