Whenever a performance problem arises, the database takes the blame, but is that really true? This article will provide a hand's on, step by step approach to determine where the problem is. "Guilty Until Proven Innocent"
Joe Geller discusses some favorite tuning tips for Db2 in this video recorded at IDUG EMEA in Lisbon last month.
This article starts a serial devoted to Db2 for z/OS System Profiles. Profiles are still not widely used and known while they represent a strong capability allowing to automatically tune the system. This introductory article discusses how you can define and activate a system profile.
There are a number of fairly important tuning tips that do not get much attention. In this article I will describe one of my favorites – Hash Joins.
This presentation from the IDUG EMEA 2016 will provide an overview of DB2 LUW statistics and the options to collect them, to help you achieve optimal query performance, with minimal administration effort.