Installing Entire System Server Interface on z/VSE

The Entire System Server Interface is required if the Entire System Server is to be used.

This document describes the steps for installing the Entire System Server Interface on z/VSE. You can choose between default installation (recommended) and customized installation.

Related Topic:

For information on installing and using the Entire System Server, refer to the relevant product documentation.

Notation vrs or vr:

When used in this document, the notation vrs or vr represents the relevant product version (see also Version in the Glossary).

Prerequisites

Before you can use the Entire System Server Interface, you must install a supported version of Entire System Server specified under Software AG Product Versions Supported by Natural in the current Natural Release Notes for Mainframes.

See also General Prerequisites and System Support in the section Overview of the Installation Process.

Default or Customized Installation

If you want to use the default value settings in the modules ESYNODTB and NATPNIP (used by the Entire System Server and Natural ISPF), proceed with Link the Entire System Server Interface to the Nucleus.

If you do not want to use the default value settings, edit the modules NATPNIP and ESYNODTB described in this section.

NATPNIP

The NATPNIP module contains the following parameters and default values: 

NAMVIEWP BUFLEN=12288,NUMREQ=5,MAXCBL=3000,MAXEDL=6000,EXTUSER=INIT-USER

The parameters are explained below:

BUFLEN Length of all Adabas buffers in bytes
NUMREQ Number of possible nested FIND loops in Natural calling the Entire System Server
MAXCBL Complex FIND buffer length
MAXEDL Editor session buffer length

MAXEDL is used by the NSPF editor and incore database.

The default value is 6000, which should be sufficient for an NSPF editor session and typical incore database applications. However, for large layouts within an incore database file that value might not be large enough and the following message is issued: NAT3077: Not enough space for extent. DB/FNR/Subcode :1:/:2:/:3:. (see the Messages and Codes documentation).

In this case, the value of MAXEDL has to be increased.

EXTUSER External user ID passed to the Entire System Server for security checks

See also EXTUSER in the following section.

EXTUSER

The parameter EXTUSER describes how to inherit security definitions from an external security system such as RACF, ACF2 and TOP-SECRET.

The appropriate parameter setting depends on whether a multi-user address space or a single-user address space is used in your environment:

  • A multi-user address space provides the option to maintain different user security definitions, for example, one for a CICS and one for a Com-plete user).

  • A single-user address space supports a subsystem, for example, a Natural subtask for Entire Output Management or Entire Operations Managment, or a Natural RPC, Natural Web/IO Interface or batch server.

    Recommended values for EXTUSER are:

    EXTUSER=INIT-USER Recommended for a multi-user address space.

    The contents of the Natural system variable *INIT-USER must be identical to the user definiton in the external security system (for example, RACF).

    The Entire System Server transfers the value of *INIT-USER to the external security system, and all calls to security restricted resources are handled under this user ID.

    In this case, the security definition from a CICS or Com-plete user (for example) is inherited by Entire System Server, and a new logon is not required. If the value of *INIT-USER is not found in RACF (for example), an error occurs indicating that a logon is required.

    (*INIT-USER is described in the System Variables documentation.)

    EXTUSER=USER Recommended for a multi-user address space in a Natural Security environment.

    Processing is similar to EXTUSER=INIT-USER except that the Natural system variable *USER (described in the System Variables documentation) is used.

    (*USER is described in the System Variables documentation.)

    EXTUSER=ADDRESS-SPACE

    Recommended for a batch or server environment.

    The security description of this address space is inherited for security evaluation.

ESYNODTB

The ESYNODTB module contains the following parameters and default values: 

NAMXNOD ID=148,NAME=PRODUCTION-1
NAMXNOD ID=149,NAME=PRODUCTION-2
NAMXNOD ID=1490,NAME=DBID-ABOVE-255,LAST=Y
END

The parameters and default values are explained below:

ID Entire System Server node number (also known as DBID)
NAME Entire System Server node name
LAST Indicator for last entry in table

Optional Node Name for Entire System Server Calls

Calls to the Entire System Server from Natural are usually handled with the NODE parameter which specifies the node number to be used for the call, for example: 

FIND ACTIVE-JOBS WITH JOB-NAME = 'ADA*' AND NODE = 148

If the node number is defined in the ESYNODTB module, alternatively, you can specify the logical name of the required Entire System Server with the NODE-NAME parameter, for example: 

FIND ACTIVE-JOBS WITH JOB-NAME = 'ADA*' AND NODE-NAME = 'PRODUCTION-2'

Assemble the Parameter Module for the Entire System Server Interface Component

Natural ISPF

If Natural ISPF is used as the INCORE database:

  • (Job I055, Step 1106)

    Link the parameter module NATPNIP. In this case, the module ESYNODTB is not required.

Entire System Server

If the Entire System Server is used:

  • (Job I055, Steps 1106, 1107)

    Assemble and link the modules NATPNIP (Step 1106), and, optionally ESYNODTB (Step 1107).

Link the Entire System Server Interface to the Nucleus

(Job I060, Step 3720)

  • Link the following Entire System Server Interface modules to either the environment-independent nucleus or the environment-dependent nucleus by using the corresponding INCLUDE statements: 

     INCLUDE NATPNIP
    		 Entire System Server Interface parameters 
     INCLUDE ESXNUC
    		 Entire System Server Interface module 
     INCLUDE ESYNODTB
    		 Optional, node table

Installing and Activating the Write-to-Spool Feature

If you want to use the Write-to-Spool feature, either link the access method to your nucleus or load the method dynamically. See also the Natural parameters RCA and RCALIAS.

You can define and assemble the defaults for your nucleus by using the source member NATPWSDF before linking the defaults to the nucleus. You can find the source member NATPWSDF in the source library of Natural.

The default settings of source member NATPWSDF are as follows: 

NAMPWSPL NODE=148,
PROGRAM=,
CLASS=A,
HOLD=YES,
CNTL=A,
FORM=,
RMT=,
FORMDEF=,
PAGEDEF=

The table below shows the modifiable parameters of source member NATPWSDF and a detailed description of these parameters:

Parameter Description
Node NPR target node.

The node number can consist of up to 5 digits.

It addresses the destination started task of the Entire System Server and where the output is written.

Program JES Writer which can contain up to 8 characters.

JES provides control to the Writer program. If JES does not find it, it is ignored.

Possible value: *OUTPUT means that the input from the Natural statement DEFINE PRINTER is used to be interpreted as JES Writer.

Class SYSOUT class within JES where the output has to be written. It can contain only one character or digit.

It is a descriptor for further software (for example, Entire Output Management) to detect the output stream for processing.

Hold = yes/no Specifies whether the output stream is to be held within the JES spool in case the task previously started by the Entire System Server terminates.
CNTL
Represents the control character for the SYSOUT data set.

CNTL contains one character:

A ASA control character
M Machine control character
FormRMT Describes the form control buffer for JES. This value is transferred to JES which handles the processing.

RMT represents the JES remote user ID if SYSOUT has to be routed to a different JES system.

You can find the name of the JES system in the destination field within the DEFINE PRINTER statement (for example, DEFINE PRINTER OUTPUT='DAEM').

Formdef
Pagedef

Can contain up to 6 characters.

After editing the NATPWSDF source member with customized values, you can assemble and link it. If you want to use the default settings, you can omit this step.

If you want to use the Write-to-Spool feature with statically linked access method at your site, relink the Natural module as follows: 

INCLUDE NATPWSPL    The Write-to-Spool access method for Natural
INCLUDE NATPWSDF    The Write-to-Spool defaults (your adapted parameter module)

If you want to use dynamic load, you can either use the delivered module NATPWSAM with default parameters or you can link your adapted parameter module.

The output is written into the POWER spool under a new job number. The name of the printed spool data set will be the name of the original batch job or the user ID of the TP monitor.

For further information, see System Spool Access in the Operations documentation.