IDUG NA 2026

This session should be considered because it addresses a high-value challenge for Db2 customers: performing a version upgrade with little to no application outage while preserving a reliable backout path. Based on real production experience, it covers failed upgrade scenarios, post-upgrade risk, and the operational realities of switching active workloads across versions and hardware. Rather than staying conceptual, it presents a practical, repeatable approach using Q Replication and Automatic Client Reroute (ACR), along with lessons learned on synchronization, clustered cutover behavior, and risk reduction. Attendees will leave with actionable ideas they can apply in their own environments.
This session presents a practical approach for performing a no-outage Db2 version upgrade using Q Replication and Automatic Client Reroute (ACR). It explains the drivers behind the solution, including online upgrade capabilities in competing platforms, prior failed upgrade attempts, and the need for a reliable backout strategy. The session then walks through replication setup, synchronization of an active source to the target, online cutover steps, and operational challenges in clustered environments. Attendees will learn how to move from an older Db2 version to a newer one with minimal disruption and lower upgrade risk.

Db2 Z and the CIA is a powerful informational combination. To be clear, the CIA is the Compliance Information Analysis product available for free to many users of Db2 Z (if you have Broadcom products). Broadcom introduced the CIA as a subproduct of ACF2. It is now an independent product available to most users of their products. The CIA provides a series of Db2 tables that can contain all the information from your external-security-manager (ESM), whether it is ACF2, RACF, or TopSecret. Once your ESM is loaded into the CIA, it is relatively more accessible to the curious end-user! SQL SELECT can be used to easily build interesting and useful and focused reports about your security configuration. This presentation will go over the basics of mainframe security and the basics of the CIA and how to build and populate. Finally, interesting CIA tables and views (and sample SELECTs) will be highlighted to show why it is useful.

I have a passion for all things mainframe especially Db2 for z/OS.
I like to tell non-technical folks what I do is make the mainframe & its databases a little easier to work with—and maybe a little less intimidating for the next generation of users.”
“honestly—when people hear ‘mainframe,’ they don’t always think modern, developer-friendly, and easy to integrate with.
But that’s exactly what we’re going to challenge today.”
“What I’m hoping to show you is that modernization isn’t about replacing the mainframe—it’s about unlocking more value from it, making it easier to use, and integrating it seamlessly into how we already build and deliver applications today.”
“So whether you’re deeply familiar with the platform, or just curious about how it fits into a modern development lifecycle—there should be something useful here for you.”