Modernisierung & Innovation – Living Mainframe

Invoke any services from mainframe applications via Java: A hands-on guide to calling out into Java from Batch via CICS and Liberty

Modernisierung & InnovationVon Thomas Münz 7. Oktober 2025

Those who read my earlier blog article on accessing CICS programs via Liberty from WebServices, remember that I was announcing this article. So, let’s dive into it. Integrating COBOL batch programs with modern Java applications running in CICS is a common requirement in enterprise mainframe environments. The External Call Interface (EXCI) provides the bridge, allowing…

Expose CICS Programs as WebServices in Liberty to clients

Modernisierung & InnovationVon Thomas Münz 3. September 2025

Introduction In IBM CICS, the integrated WebSphere Liberty profile provides a modern, lightweight runtime for Java applications.If your goal is to expose CICS business logic through SOAP without modifying existing programs, a clean approach is to wrap only those programs that can be called via EXEC CICS LINK from Java. With this method, the Liberty…

Aider Meets COBOL: A Legacy Language’s Modern Friend

Modernisierung & InnovationVon Sachin Keshav 26. August 2025

This page explains how to enhance Aider for mainframe development by integrating COBOL parsing and analysis. What is Aider ? Aider is an open-source (Apache-2.0 license) coding assistant that you use directly from your terminal. It connects with both licensed and open-source large language models (llm) to help you write, edit, and improve your code.…

Modernizing COBOL Testing with COBOL Check

Modernisierung & InnovationVon Marc Bauer 25. März 2025

COBOL has long been the backbone of many legacy mainframe systems, but modern software development practices – like automated testing and continuous integration – are reshaping how we maintain and enhance these critical systems. Enter COBOL Check, an open-source unit testing framework designed specifically for COBOL by the Open Mainframe Project. This blog post explores…

Revolutionizing DevOps: The Synergy of AI and Large Language Models in Enhancing Every Phase

Modernisierung & InnovationVon Marc Bauer 14. April 2024

In this comprehensive exploration, we delve into the transformative impact of Artificial Intelligence (AI) and Large Language Models (LLMs) across the entire DevOps cycle, from initial planning through to operation and monitoring. We uncover how these cutting-edge technologies not only streamline and optimize each phase but also foster a more collaborative, efficient, and innovative development…

dsfs in z/OS: A New Era of File Management

Modernisierung & InnovationVon Marc Bauer 14. Dezember 2023

Introduction Among all the developments we are currently witnessing in z/OS, dsfs stands out as my favorite. The reasons are straightforward. dsfs provides a simple and transparent interface between traditional MVS files and Unix processes. In recent days, I’ve been experimenting with the Advent of Code 2023. During this time, I’ve performed some interesting tasks…

KIs können die Arbeit mit dem Mainframe revolutionieren – Wir verhelfen Ihnen zu einem schnellen MVP

Modernisierung & InnovationVon Andreas Gröschl 25. Oktober 2023

Als Unternehmen ständig am Puls der Zeit zu bleiben, kann eine echte Herausforderung darstellen. Die Arbeit am Mainframe ist harte Kopf- und aufwendige Handarbeit, getan von erfahrenen Experten. Aber was wäre, wenn KI-basierte Technologien diese Arbeit vereinfachen und effizienter gestalten können? Die Evolution der KI schreitet rasend schnell voran. Mit dem letzten Update von GPT-4…

LLM GitHub Repos to watch

Modernisierung & InnovationVon Marc Bauer 27. Juli 2023

I’m happy to share my (current) top list of GitHub repositories in the large language model space. Enjoy! Things you can try right now For Developers Interesting Experiments

GPT Revolutionizes Mainframe Development and Administration

Modernisierung & InnovationVon Marc Bauer 6. April 2023

In the world of mainframe computing, application developers and system administrators have long dealt with unique challenges, complexities, and legacy technologies. However, recent advancements in Large Language Models, specifically the GPT (Generative Pre-trained Transformer) model, have begun to reshape how mainframe professionals should approach their daily tasks. This article will explore the benefits Large Language…

Containers for the mainframe Part 2: Testing s390x containers and zLinux software on x86_64

Modernisierung & InnovationVon Andreas Gröschl 14. Juni 2022

Dealing with containers on the mainframe has its very own challenges. Sometimes you find a s390x container image and want to run it for testing or development. Normally you would have to do that on the mainframe. It is possible to run s390x container images on x86_64 using qemu to emulate the s390x architecture and…

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