Planet Mainframe on LinkedIn
Planet Mainframe on LinkedIn
Planet Mainframe

What’s Inside – Cheryl Watson’s Tuning Letter

Nov 11, 2025

Cheryl Watson's Tuning Letter, Community & Careers, Education, IBM z/OS Ecosystem, Tuning Letter

Cheryl Watson's Tuning Letter | 2025 - Issue 03

Mark Wilson

Mark Wilson is a globally recognized thought leader and international speaker in mainframe security and technology, as well as a passionate advocate for all things Z. With more than 40 years of experience, Mark serves as the Editor of Cheryl Watson's Tuning Letter and as the Technical Director at Vertali. He is a multi-year IBM Champion and a Planet Mainframe Influential Mainframer.  

The latest Tuning Letter, 2025 No.3, is out now!

Subscribers to Cheryl Watson’s Tuning Letter can find the latest issue, 2025 No.3, on our Tuning Letter website. If you are not a current Tuning Letter subscriber, check the website for information about subscription rates and the ordering process for this valuable resource for yourself or your team.

Highlights

In this issue, you will find: 

  • Db2 Corner debuts with Sally Mir, the “Db2 Diva”
  • SDSF 3.2 deep dive from Rocket Software’s Rob Scott
  • Cloud Storage overview by John Hogan of 21CS
  • IBM’s global z/OS configuration survey – and request for your help
  • ‘Back to the Future’ security feature from Niall Ashly and ‘Hints & Tips’ column from Beth Newman Jones
  • Latest New Function APARs and event listings

You can find the full Table of Contents for this and previous editions.

Db2 Diva

Share Your Thoughts

We hope you find this issue educational and entertaining. And remember that we love hearing from our readers. You can contact me with your own ideas and suggestions at markw@planetmainframe.com or technical@planetmainframe.com

All the best.

Mark

Mark Wilson

0 Comments

Submit a Comment

Your email address will not be published. Required fields are marked *

Sign up to receive the latest mainframe information

This field is for validation purposes and should be left unchanged.

Recently Published

Read More

AI-Powered WLM Cuts Batch Queue Time by Up to 70%

AI-Powered WLM Cuts Batch Queue Time by Up to 70%

by

What happens when Workload Manager can anticipate batch demand instead of simply responding to it? The latest issue of Cheryl Watson’s Tuning Letter leads off with findings from testing IBM AI-powered Workload Manager (WLM). The test used an AI model trained on 30...

You Can Now Carry a Teaching Mainframe in Your Bag

You Can Now Carry a Teaching Mainframe in Your Bag

by

For years I have told mainframe security newcomers the same thing: If you want to learn how to attack and defend a system, you need to use that system. Unfortunately, z/OS is not something you spin up on a laptop over lunch or throw into your home lab. Mainframe...

What to Expect at SHARE Pittsburgh

What to Expect at SHARE Pittsburgh

by

With SHARE Pittsburgh approaching, SHARE President Art Gutowski joined Planet Mainframe to talk about what attendees can expect—and why the conference remains valuable for both newcomers and longtime mainframe professionals. Gutowski is nearing the end of his...