What happens when an IMS logger fills up in production? How do you prepare for z/OS 3.2? Is Coupling Facility encryption worth the effort? And what does AI really mean for the future of the mainframe workforce?
The latest issue of Cheryl Watson’s Tuning Letter tackles all of those questions—and plenty more.
This quarter’s edition combines practical systems programming guidance with broader discussions about where the platform is headed. Readers will find a detailed investigation into:
- A real-world z/OS System Logger performance issue
- A comprehensive implementation guide for Coupling Facility encryption
- Hard-earned lessons from a z/OS 3.2 migration effort.
There are also tips for getting more out of ISPF 3.4; a primer on z/OS files, data sets, and objects; and a roundup of the latest APARs, hardware alerts, and security updates.
One of the standout articles comes from Frank De Gilio, who argues that the future challenge for IBM Z isn’t the platform itself, but how new generations of technologists interact with it. His exploration of AI, modern tooling, and the eventual transition beyond traditional 3270 interfaces offers a thought-provoking look at the next era of enterprise computing.
For more than three decades, the Tuning Letter has helped IBM Z professionals solve problems, avoid mistakes, and stay ahead of emerging technology trends. It’s one of Planet Mainframe’s key brands.
The June 2026 issue continues that tradition with the kind of technical depth and real-world experience that is increasingly difficult to find elsewhere.
Curious? Subscribe today.
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