Most Recently Published Tuning Letters
Cheryl Watson's Tuning Letter 2026 | Volume 36 - Issue 02
What’s in this Issue
- Let me be Frank by Frank DeGilio
- The z/OS System Logger – ‘Plan for the worst—hope for the best’ by Rob Singh & Aidan Uy
- Are you ready fopr z/OS 3.2? Requirements for the latest version by Tazmin Getgood & Rob Herring
- Is it a file, a data set, or an object? by John Hogan
- Sysplex Guide to Coupling Facility (CF) Encryption by Marco Egil
- Old Panel, New Tricks: Getting More from ISPF 3.4 by Julian Bridges
- Sysprog Stories of Woe—Lessons Learned During a z/OS 2.5 to z/OS 3.2 Migration Preparation by Tamás Kiss
- Conferences & Events by Felix Scott
- New Function APARs by Tiemo Osman Ramazan
Cheryl Watson's Tuning Letter 2026 | Volume 36 - Issue 01
What’s in this Issue
- Squeezing Even More Throughput Out of CICS by Frank Kyne
- A Coffee Date with Db2 by Sally Mir
- Top 10 Findings from z/OS Secuirty Assessments Pt. 2 by Niall Ashley
- TADz for the Systems Programmer by Andy Taylor
- IPL What the heck is that??? by Mark Wilson
- Security hints and tips by Beth Newman-Jones
- Let me be Frank by Frank DeGilio
- Conferences & Events by Felix Scott
- New Function APARs by Tiemo Osman Ramazan
Cheryl Watson's Tuning Letter 2025 | Volume 35 - Issue 03
What’s in this Issue
- GS-UK In-Person Conferences by Mark Wilson
- A Coffee Date with Db2 by Sally Mir
- Using Cloud Object Storage by John Hogan
- CICS 6.35 by Mark Wilson
- Unlocking business insights by Steve Warren
- What’s new in SDSF for z/OS by Rob Scott
- A Call for Help from IBM by Mark Wilson
- IBM z17 The Best Mainframe by Mark Wilson
- Top 10 Findings from z/OS by Niall Ashley
- Hints, Tips, and Lessons by Beth Newman-Jones
- Let me be Frank by Frank De Gilio
- New Function APARs by Tiemo Osman Ramazan
- Conferences & Events by Felix Scott
- Security and Cryptography by Mark Wilson
- Updates ot Arcati for 2026 by Amanda Hendley
Cheryl Watson's Tuning Letter 2025 | Volume 35 - Issue 02
What’s in this Issue
- z17 aka 9175 – highlights by Mark Wilson
- z/OS 3.2 innovations: what’s new and improved by Marna Walle
- How to not buy the wrong CPC/CEC – and what if you did? by Donald Zeunert
- Don’t let breaking changes break you by Ed Jaffe
- Managing capacity, improving performance, and reducing mainframe running costs by Ciara O’Connor
- z/OS Management Facility (z/OSMF): then and now by Rob Herring
- Let me be Frank by Frank De Gilio
- Jargon Buster Reference for Z (JBRZ) — First Edition by John Baker
- New Function APARs by Tiemo Osman Ramazan
- Conferences & Events by Felix Scott