IDUG NA 2025

We were in a situation that some parts from a old/huge Partition range table are full and PAGENUM was ABSOLUTE, and we are not able to manage space locally in each part , So was Decided to ADD some parts between existing parts ! In this journey we needed to tackle some issues Like finding partitions range value for brand new parts, learning about concept of physical and Logical parts, and understanding how Db2 manages them. Moreover how utilities like Load and Reorg handle the added Parts! Many details  discussed and shared.

In this session, you will learn how to capture SQL statistics from Db2’s dynamic statement cache and how to combine them with the information from your EXPLAIN tables. The code that we use will be available for download after the session. Discover how to identify the queries that will benefit most from tuning, allowing you to focus your valuable time on those that matter. We start with simple metrics like RID list errors and work our way up to other performance metrics like top consumers, I/O statistics, lock contention, and more. You will learn how to track the performance and resource consumption of a given SQL statement over time, which makes it possible to spot trends. Finally, we will show how to detect access path changes in dynamic SQL workload. This is a common problem in environments with heavy dynamic workload. Something as simple as a single RUNSTATS execution on one of the involved tables can causeunexpected changes to the access path that Db2 chooses. Using historic explain information, these changes become visible, and you can take immediate action.

‘The Art of War’ is an ancient Chinese book on military skills, strategy, and tactics. It has influenced military thinking for centuries and has been applied to many fields outside of the military, such as business tactics, legal strategy, politics, sport, and now for the first time Db2 SQL performance!
In this session, you will learn how the ‘Art of War’, principles such as planning, resources, attack and defense, timing, strength/weaknesses, weapons, and knowledge, translate perfectly into tactics to defend against and defeat bad SQL.
This is a back–to–basics session where you will learn how to use these principles to fight against bad SQL. It provides many practical examples and for additional interest is illustrated using maxims and quotes from the book.

Db2 HADR is a widely deployed Highly–Available configuration, providing excellent reliability and capacity, with Reads–on–Standby and multiple auxillaries. This session takes a look at the performance of HADR solutions, including

how to successfully configure and monitor HADR operation 
best practices and troubleshooting
Configuring and using virtual IP
examining performance data from AWS HADR pairs for different sync modes