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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...
Zinnov Award Winner, Mainframe Skills Certificates, and GSE UK Sponsorship Opportunities
BMC Software Wins Zinnov Award BMC has announced that it has won the Zinnov award in the Champions in Unlocking Center Value (Enterprise IT) category. The Zinnov Awards are the longest-running GCC awards that honor and celebrate incredible contributions from...
Understanding Downtime – Quantifying the Impact of Mainframe Outages and the Value of Observability
No matter what your business is, chances are good that at least part of it is completed online. Whether that is records management, payroll, or customer purchases, the online portion of your business is most likely a very critical component of overall success. That is...
A wild ride: mainframes, motorcycles and me
As a teenager, I fell in love with mainframes and motorcycles. In the latter case, to be more precise, with classic Kawasaki bikes of the 1970s and 80s. And for me, there are important crossovers. The first point is that I love building and fixing things. The...
What You Said – (ClownStrike) CloudStrike
According to The Guardian, the Crowdstrike outage crashed an estimated 1% of all Windows PCs worldwide—or about 8.5 million—and is estimated to have cost the US Fortune 500 USD $5 billion. We asked you, Planet Mainframe readers, to share your thoughts on the...
Top 5 Reasons Mainframers Have a Promising Future
We’ve all heard the saying “if it ain't broke, don’t fix it”. While this rings true in the practical sense, it also is a direct reflection of the dynamic some organizations are finding themselves in regarding internal mainframe talent. Commonly, the emphasis pivots to...
The Two Facets of AI Sustainability: Better Infrastructure and More Environmental Responsibility
Artificial intelligence (AI) is a field of computer systems designed to simulate human thought or part of it, with the latest generation of products, such as ChatGPT, drawing from vast web content, processing responses, and training themselves to respond more...
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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...