IDUG EMEA 2026

Are you running maintenance because it’s Sunday, or because the data actually needs it? With shrinking windows and massive data growth, "business as usual" is no longer an option. This session explores how Broadcom Db2 utilities provide the precision and confidence needed to manage modern environments. We will discuss establishing data-driven housekeeping practices, leveraging recovery toolkits to validate resilience without production impact, and optimizing high-speed data movement to support DevOps and rapid testing. Learn to transform your batch utilities from a routine expense into a high-performance engine.

This session is a deep dive into 3 new Db2 12.1 security features, Reduce file permissions, RCAC mask at read enhancements, and defining a Trusted Context using the new trust procedure and client callbacks. This will be a face paced session offering practical details on how to make use of these new features in more depth than a what's new session can cover. Reduced file permissions address the common concern of everyone having access to the db2diag.log (and others). Mask at read offers an alternative masking behaviour with fundamental changes to SQL behaviour. And Trust Procedures allow custom definitions of trust for determining a trusted connection.

As IBM continues to deliver new utility enhancements, it's important to take a step back and review what options really matter and how to get the best performance and availability from utility executions. This session will explain general recommendations for utility performance as well as look at specific utilities to see how they can be optimised to make a real difference to performance, application availability and usability.

When upgrading to Db2 12.1 additional activities like OS upgrade or cluster technique change might occur. In addition, test migrations should be possible with no or minimal impact on a productive system. The presentation shows, how Db2 can be migrated to 12.1 including OS upgrade scenarios and cluster technology changes, build on pure Db2 functionality. It describes a near zero downtime solution. With it's repeatability, the solution can easily be used for pre-migration testing.

Many Db2 DBAs treat the z/OS Workload Manager (WLM) as "the system programmer’s problem," but WLM is actually the engine that determines if your SQL succeeds or fails. In this session, we will demystify WLM from a DBA’s perspective. We’ll cover the basics: defining service classes, importance, and goals. You will learn how WLM distinguishes between "local" work (like batch) and "remote" SQL (using enclaves), and why this matters for your daily performance monitoring. We’ll wrap up with simple best practices and a look at how to spot WLM issues before they become outages. Join this session to learn how to speak the language of WLM and ensure your Db2 workload gets the priority it deserves.

A critical Db2 for z/OS purge batch is repeatedly abending after hitting CPU limits—without deleting a single row. What followed was a six-month troubleshooting marathon. With the batch spending over 80% of its time in I/O wait and racking up 500 million GETPAGEs on a 2-million-row table, standard tuning simply wasn't enough.This session dives into the gritty reality of complex performance tuning: the dead ends, the false starts, and the eventual breakthroughs. We will walk through the entire investigation—from utilizing monitoring tools to experimenting with UTS conversions and dedicated buffer pools. Finally, we’ll reveal how rethinking our DELETE index strategy, host variables, and leveraging ON DELETE CASCADE NOT ENFORCED transformed a CPU-crushing failure into a consistent, 20-minute purge process. Attendees will leave with a practical, battle-tested methodology for rescuing failing batch processes.

The presentation is based on real life BPool tuning process for one of the Ensono clients. The "reverse application analysis" reveals the opportunities the IFCID(199) usage gives to every Db2 SYSPROG.
The standard Ensono BPool tuning process presented with a multiple charts.It also was enhanced with IFCID(199) implementation, giving amaizing results.
How to use IFCID(199), different characteristics SYNC I/O, ASYNCH I/O, GetPages can be involved into the the analysis uncovering the hidden performance bugs.

The folks at the Db2 Lab provide us with a great tool to monitor Db2. it's free and already installed with Db2. This session will show you how db2mon works and how to use it. Then, we'll discuss how to run it in different ways for different use cases. Next, we'll present a way to run db2mon for historical data gathering and trend analysis. Finally, we'll show examples of the data db2mon provides and what to look for in various performance scenarios.

SQL is a very powerful language. But to make best use of it one has to come to a "set-oriented" thinking to solve problems instead of the procedural thinking most application programmers are used to. This presentation discusses some important problems for which a set-oriented solution is initially not obvious, and shows how solutions of these problems can be developed with SQL in Db2. This presentation is a continuation with new problems and solutions of the presentation "SQL tricks with Db2" shown at IDUG EMEA 2024.

This session provides a technical overview of migrating Db2 for z/OS connectivity seamlessly from SNA/VTAM to TCP/IP. We will outline key configuration updates, and performance considerations involved in the transition, with a special focus on strengthening security through modern encryption using TLS and AT‑TLS for secure Db2 traffic. Attendees will gain practical guidance, best practices, and lessons learned to ensure a smooth and secure migration to an IP‑based infrastructure.