Internal Reader Submitting Jobs using IEBGENER

Introduction

This suite of programs will describe how to submit a second job to the internal reader from within the currently running job. A small sequential file is created by the second JCL member.

The source code, data sets and documentation are provided in a single zipped file called INTRDR01.ZIP. This zipped file may be downloaded from the SimoTime Web site. In the Windows environment the file names have file extensions. If the JCL member is uploaded to a ZOS Mainframe from the Windows and Micro Focus environment the file extension is dropped.

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Sample JCL

This example contains two (2) JCL members. The first JCL member uses IEBGENER to copy a second job into the internal reader. The "COPY" or "REPRODUCE" function is standard for IEBGENER. What makes this use of IEBGENER unique is the definition of the INTRDR by SYSUT2.

When the second JCL member is executed it uses IEBGENER to create a sequential file.

Note: Depending on the system environment and if the primary and secondary jobs are the same class then the secondary job may not execute until the primary job completes.

Submit a 2nd Job via Internal Reader

The following mainframe JCL (INTRDRJ1.jcl) uses IEBGENER to submit a second job via the Internal Reader (INTRDR). The IEBGENER utility is commonly used to copy one sequential data set to another. The file to be copied is SYSUT1 and the output file is SYSUT2. A JCL member of a partitioned data set (PDS) can be defined by SYSUT1. When SYSUT1 is a PDS Member that contains JCL statements and SYSUT2 is SYSOUT=(,INTRDR) the JCL member is copied to the internal reader (or submitted to the internal reader). The key to this technique is the definition used by SYSUT2. IEBGENER thinks it is doing a simple 80/80 Repro or making a copy of a file.

//INTRDRJ1 JOB SIMOTIME,CLASS=1,MSGCLASS=0,NOTIFY=CSIP1
//* *******************************************************************
//*        This program is provided by SimoTime Technologies          *
//*           (C) Copyright 1987-2019 All Rights Reserved             *
//*             Web Site URL:   http://www.simotime.com               *
//*                   e-mail:   helpdesk@simotime.com                 *
//* *******************************************************************
//*
//* Text   - Post the next JOB to the Internal Reader using IEBGENER.
//* Author - SimoTime Technologies
//* Date   - January 24, 1996
//*
//* This job uses a function of IEBGENER and INTRDR to submit a job
//* from this job to the Internal Reader.
//*
//* This set of programs will run on a mainframe under MVS or on a
//* Personal Computer with Windows and Micro Focus Mainframe Express
//* or ES/MTO.
//*
//* *******************************************************************
//* Step 1 of 1, Post the next JOB to the Internal Reader...
//*
//INTRDRS1 EXEC  PGM=IEBGENER
//*
//* SYSUT1 references a PDS Member containing JCL Statements
//* Sysut2 references SYSOUT that references the Internal Reader
//* The result is a copy (or submit) of JCL to the Internal Reader
//* :....1....:....2....:....3....:....4....:....5....:....6....:....7.
//SYSUT1   DD  DSN=SIMOTIME.PDS.JCL(INTRDRJ2),
//         DISP=SHR
//SYSUT2   DD  SYSOUT=(,INTRDR)
//*
//SYSPRINT DD  SYSOUT=*
//SYSIN    DD  DUMMY

2nd Job to be Processed via INTRDR

The following mainframe JCL (INTRDRJ2.jcl) is used to copy records (from an instream string of records defined by SYSUT1) to an output file that is defined by SYSUT2. This is a common use of IEBGENER. In this suite of sample programs this JCL member is submitted to the Internal Reader from the Primary JCL member described in the preceding section of this document.

//INTRDRJ2 JOB SIMOTIME,CLASS=1,MSGCLASS=0,NOTIFY=CSIP1
//* *******************************************************************
//*        This program is provided by SimoTime Technologies          *
//*           (C) Copyright 1987-2019 All Rights Reserved             *
//*             Web Site URL:   http://www.simotime.com               *
//*                   e-mail:   helpdesk@simotime.com                 *
//* *******************************************************************
//*
//* Text   - Create a Sequential Data Set on disk using IEBGENER.
//* Author - SimoTime Technologies
//* Date   - January 24, 1996
//*
//* The first job step (GETREADY) will delete any previously created
//* file. The second job step (INTRDRS2) will create a new file.
//*
//* This set of programs will run on a mainframe under MVS or on a
//* Personal Computer with Windows and Micro Focus Mainframe Express.
//*
//* *******************************************************************
//* Step   1   Delete any previously created file...
//*
//GETREADY EXEC PGM=IEFBR14
//SYSUT2   DD  DSN=SIMOTIME.DATA.INTRDRD1,DISP=(MOD,DELETE,DELETE),
//             STORCLAS=MFI,
//             SPACE=(TRK,5),
//             DCB=(RECFM=FB,LRECL=80,BLKSIZE=800,DSORG=PS)
//*
//* *******************************************************************
//* Step   2   Create and populate a new QSAM file...
//*
//INTRDRS2 EXEC PGM=IEBGENER
//SYSPRINT DD  SYSOUT=*
//SYSIN    DD  DUMMY
//*
//* SYSUT1 defines the instream records that will be copied to SYSUT2
//* :....1....:....2....:....3....:....4....:....5....:....6....:....7.
//SYSUT1   DD  *
INTRDR Test Record 001
INTRDR Test Record 002
/*
//SYSUT2   DD  DSN=SIMOTIME.DATA.INTRDRD1,
//             DISP=(NEW,CATLG,DELETE),
//             STORCLAS=MFI,
//             SPACE=(TRK,5),
//             DCB=(RECFM=FB,LRECL=80,BLKSIZE=800,DSORG=PS)
//

Summary

This suite of programs will describe how to submit a second job to the internal reader from within the currently running job. This document may be used to assist as a tutorial for new programmers or as a quick reference for experienced programmers.

In the world of programming there are many ways to solve a problem. This documentation and software were developed and tested on systems that are configured for a SIMOTIME environment based on the hardware, operating systems, user requirements and security requirements. Therefore, adjustments may be needed to execute the jobs and programs when transferred to a system of a different architecture or configuration.

SIMOTIME Services has experience in moving or sharing data or application processing across a variety of systems. For additional information about SIMOTIME Services or Technologies please contact us using the information in the  Contact or Feedback  section of this document.

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Permission to use, copy, modify and distribute this software, documentation or training material for any purpose requires a fee to be paid to SimoTime Technologies. Once the fee is received by SimoTime the latest version of the software, documentation or training material will be delivered and a license will be granted for use within an enterprise, provided the SimoTime copyright notice appear on all copies of the software. The SimoTime name or Logo may not be used in any advertising or publicity pertaining to the use of the software without the written permission of SimoTime Technologies.

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Downloads and Links

This section includes links to documents with additional information that are beyond the scope and purpose of this document. The first group of documents may be available from a local system or via an internet connection, the second group of documents will require an internet connection.

Note: A SimoTime License is required for the items to be made available on a local system or server.

Current Server or Internet Access

The following links may be to the current server or to the Internet.

    Explore How to Submit a Job to INTRDR using COBOL. This suite of programs and documentation will describe and demonstrate how to use a COBOL program in a job step to submit a secondary job to the Internal Reader (INTRDR).

    Explore How to Submit a Batch Job to INTRDR from CICS using the EXEC CICS SPOOL functions.

    Explore the JCL Connection for more examples of JCL functionality with programming techniques and sample code.

    Explore the COBOL Connection for more examples of COBOL programming techniques and sample code.

    Explore The ASCII and EBCDIC Translation Tables. These tables are provided for individuals that need to better understand the bit structures and differences of the encoding formats.

    Explore The File Status Return Codes that are used to interpret the results of accessing VSAM data sets and/or QSAM files.

Internet Access Required

The following links will require an internet connect.

This suite of programs and documentation is available for download. Link to an Evaluation zPAK Option that includes the program members, documentation and control files.

Explore an Extended List of Software Technologies that are available for review and evaluation. The software technologies (or Z-Packs) provide individual programming examples, documentation and test data files in a single package. The Z-Packs are usually in zip format to reduce the amount of time to download.

A good place to start is The SimoTime Home Page for access to white papers, program examples and product information. This link requires an Internet Connection

Explore The Micro Focus Web Site for more information about products (including Micro Focus COBOL) and services available from Micro Focus. This link requires an Internet Connection.

Glossary of Terms

    Explore the Glossary of Terms for a list of terms and definitions used in this suite of documents and white papers.

Contact or Feedback

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