Managing Db2 for z/OS Application Compatibility Levels

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Session title: Managing Db2 for z/OS Application Compatibility Levels

Session abstract: Application compatibility level is something that was introduced with Db2 11 for z/OS, became more important with Db2 12 and remains important for Db2 13.

In this session I will explain what is meant by “Db2 for z/OS application compatibility level,” and I will clear up some misperceptions that more than a few people have about this area of Db2 functionality. I will also highlight the particular importance of application compatibility level for the IBM Data Server Driver packages, and I will explain how a good understanding of application compatibility level can help to avoid some Db2 database administration headaches.

Speaker bio: Robert Catterall is a Principal Db2 for z/OS Technical Specialist with IBM. He started his IT career with IBM in 1982, and worked throughout the 1990s as a member of the Company’s Db2 for z/OS National Technical Support team. From 2000 to 2007, Robert worked as a database technology strategist for CheckFree (now part of Fiserv). After working for three years as an independent Db2 consultant, he rejoined IBM in 2010. Robert is a past President of the International Db2 Users Group (IDUG), and a member of IDUG’s Speakers Hall of Fame. He presents frequently at conferences and user group meetings, and blogs about Db2 for z/OS at