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Recent Articles
Learning from SMF: Managing Db2 Buffer Pools
Unlocking the Value of Cheryl Watson’s Tuning Letter Back Catalog If you work with IBM mainframes, you’ve probably heard of Cheryl Watson’s Tuning Letter, which I now have the pleasure of editing. For decades, it’s been one of the most trusted resources for...
Inside Db2 for z/OS: How Optimized B+ Trees Power High-Speed Indexing
High-quality indexes are critical for fast data access and returns. IBM Db2 for z/OS relies on an advanced data structure called the Optimized Balanced Plus Tree to power high-speed indexing. This structure, an evolution of the classic B+ Tree, helps Db2 deliver...
AI — Security and Compliance
This month, Planet Mainframe is focusing on the topic of AI, and our trivia challenge is honing in on AI’s role in security and compliance. In a world of constant cyber-threats and increasingly complex regulatory frameworks, AI has the potential to support security...
Who is Afraid of the AI Big Bad Wolf
The other day, I was on my couch watching TV, stuck in front of the countless commercials that delayed the evening movie, when an ad spot caught my attention. A female voice extolled the virtues—if there are any—of a car that was supposed to allow me to pursue my...
Db2 Discussions, Conferences, and the Best Way to Grow Your Skills
In this episode of the Planet Mainframe podcast, Amanda Hendley talks with Chris Muncan, the chair of the 2024 IDUG North America Conference. Chris and Amanda discuss Db2 innovations, the conference, and the best ways to maintain and grow your skills. Transcription...
Planet Mainframe Introduces Free Job Postings for Entry-Level Professionals
[Nashville, July 9, 2024] — Planet Mainframe, the premier online community and resource hub for the mainframe industry, is excited to announce a new initiative to foster the next generation of mainframe professionals. Effective immediately, Planet Mainframe will offer...
A Tale of Two Systems: AI and Mainframe Computing
“I have great expectations for the growth of the mainframe because of AI.” Cheryl Watson, CEO and co-founder, Watson & Walker The reliable and powerful mainframe might have stayed a contented Clydsdale, efficiently crisscrossing the computing arena and doing its...
The Most Important Part for Cybersecurity
The relationship between education and security The digital age is a double-edged sword. While it offers unprecedented connectivity and innovation, it also presents a vast and ever-evolving landscape of cyber threats. From the devastating "mother of all breaches" in...
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Upcoming Events
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Virtual CICS User Group | The IT Stairway to Heaven. CICS Testing Pyramid: From Unit to Integration to Production-Like Environment
Zoom - Virtual MeetingEffective testing is essential for building robust systems. Dive deep into a structured approach to the testing pyramid for CICS applications. Using Test4z, we will demonstrate how unit tests form […]
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Virtual Db2 User Group | January 20, 2026
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Virtual IMS User Group | February 10, 2026
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Virtual CICS User Group | March 17, 2026
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Mainframe Trailblazers – Part 4
Here at Planet Mainframe, January is the month to focus on talent and training, and this week’s Trivia quiz follows suit with a quiz on some of the big talents that blazed the trail of the mainframe. These innovators have left an indelible mark on mainframe computing,...
IBM TechXchange, New Podcasts and Presentations, and Semeru Runtime Certified Edition for z/OS
IBM TechXchange Developer Day: Virtual Agents On January 23rd at 11 AM ET, Armand Ruiz, Vice President, Product Management, AI Platform and founder of NoCode.ai will kick off 12 hours of deep technical content to quickly advance your AI journey from...
History of Unix Trivia
It’s an understatement to say that the mainframe has come a long way since its inception in the mid-20th century. And while some of the mainframe’s evolution took place incrementally, other developments were more revolutionary. The introduction of UNIX falls into the...
GigaOm Radar Report Recognitions, IBM Open Enterprise SDK for Python 3.13, and more…
New Dell Disk Library (DLm) Models Accelerate Mainframe Storage Dell Technologies has announced the availability of two new models of the Dell Disk Library for Mainframe (DLm), the DLm2700 and DLm8700. These powerful new models feature enhanced Virtual Tape...
Mainframe Lingo Trivia
MIPS, CPUs, CRT, VTAM….the world of mainframes is absolutely notorious for the obscure lingo. A conversation between two mainframers talking mainframe-speak is sure to be entirely impenetrable to an outsider. It could be seen as a barrier (it probably is a barrier for...
Pioneering Mainframer – Erich Bloch
There’s just something about the autumnal season that makes us want to look back. This week’s Trivia Challenge is going to do just that, paying tribute to a pioneering mainframer who passed away eight years ago at the age of 91. The only child of a German-Jewish...