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Db2 Performance Myths That Refuse to Die

After decades of working with IBM Db2 for z/OS, I’m continually surprised that some performance myths simply refuse to go away. Despite new releases, new features, and new hardware generations, the same half-truths and oversimplifications keep resurfacing in design meetings and tuning discussions.

Performance tuning is nuanced. It requires understanding tradeoffs, workload patterns, and business requirements. When we rely on myths instead of measurement, we risk making…

Mainframe Trends 2026

In the world of mainframes right now, the conversation has shifted from "How do we get off the mainframe?" to "How do we make the mainframe the heart of our AI and Hybrid Cloud strategy?"

As of early 2026, the hottest mainframe-related trends are focused on some form of AI adoption and integration on Z. Here are the mainframe trends that I see as of early February 2026.

Agentic AI & In-Transaction…

10 Reasons for the Success of Db2 for z/OS

Db2 for z/OS has proven successful for decades not because of any single feature, but because it consistently delivers on the things that matter most for mission-critical enterprise computing. The biggest reasons fall into a few clear and convincing categories.…

Happy Holidays 2025!