Defining a local LU for the server

Define a local LU in a member in the SYS1.VTAMLST concatenation on the system where you are installing HCL Workload Automation for Z. This example shows how a VTAM® APPL statement might be defined:

Local LU for the server definition
VBUILD TYPE=APPL
 IS4MEOP5 APPL APPC=YES,                                               C
               AUTOSES=5,                                              C
               DMINWNL=3,                                              C
               DMINWNR=6,                                              C
               DSESLIM=20,                                             C
               MODETAB=APPCMODE,                                       C
               SECACPT=ALREADYV,                                       C
               SRBEXIT=YES,                                            C
               VERIFY=OPTIONAL,                                        C
               VPACING=2

The LU is called IS4MEOP5 and uses the logon-mode table APPCMODE.

The maximum number of TSO dialog users and PIF programs that can simultaneously access an HCL Workload Automation for Z controller via a single server depends on the DSESLIM parameter of the VTAM® LU for that server. Once the specified number of sessions has been established, all subsequent users and PIF programs that try to use that server will hang until one of the existing sessions ends.

The number of servers required by an installation depends on how extensive PIF applications are used. While it can be sufficient with one server for the dialogs, a number of servers can be required for the PIF applications. PIF applications that are frequently used and with long execution time might need separate servers.