z/OS Application Development with Isz (RDz)

Traditional mainframe application development for batch applications or on-line transactions has been done for decades using the TSO/ISPF environment. IBM's RDz (Rational Developer for System z, now called IDz or IBM Developer for zSystems) facilitates the development process by offering a complete integrated workbench for coding, testing and debugging these applications. The development can be done locally, but at any stage with a connection to the remote z/OS.
In this course the teaching of theory is kept to a minimum. Attendees will spend the majority of their time developing and testing COBOL (or PL/I) applications interactively.

This course is available for one-company, on-site presentations.

The next step

The recommended follow-on course is z/OS Communications Server Part 2 - Implementing TCP/IP under z/OS.

What you will learn

On successful completion of this course you will be able to:

  • use IDz for the development of traditional batch or online mainframe-oriented applications, written in COBOL or PL/I
  • test and debug these applications efficiently, either locally or remotely, using the integrated debugger and zUnit
  • describe and explain the possibilities for integrating z/OS applications using database access (Db2)
  • deploy the applications into the z/OS environment.

Who Should Attend

Application programmers who are going to develop 3270 and/or batch applications using the RDz COBOL and/or PL/I features


Attendees should have pre-existing skills in COBOL or PL/I programming. Knowledge of CICS will also be an advantage.


2 days

Fee (per attendee)



This includes free online 24/7 access to course notes.


Hard copy course notes are available on request from rsmshop@rsm.co.uk

at £50.00 plus carriage per set.

Course Code



Idz Workbench - an Integrated Development Environment

Eclipse concepts; navigation in the workbench; perspectives; views; editors; resource manipulations; searching; comparing; local history; code import and export.

z/OS Development

IDz features/perspectives for z/OS projects; z/OS connection; preparation of datasets (filter, mapping, property groups); COBOL / PL/I editor (code assist, templates, snippets); JCL editor and job submission; spool monitor; dataset utilities.


Preparation: compile, JCL; integrated debugger for source code debugging: views, debug, breakpoint, variable, monitor; zUnit framework.

z/OS Project Organisation

MVS subprojects; property group customisation; deployment of applications.

Database Development

Data source explorer; data projects (SQL query build and test); stored procedures (SQL PL, COBOL, PL/I); database applications.

CICS Applications

Using CICS facilities (EXEC CICS); BMS editor; CICS integrated debugging.

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