by Mathias Korn IBM (DE)

Level: Intermediate Audience: General Interest

Link to the presentation S433. Unix System Services Update

The most powerful document to analyze a problem in a z/OS environment is a dump. Each component running under z/OS provides their own recovery environment and schedules a dump in case of a problem. There are different ways how to capture one. They are taken on demand via command, using the slip command processor or will be taken automatically by the recovery routines. But once captured - what now? What kind of dumps exist and what are the first steps for System Programmers to get a feeling what was the dump written for? This session will show a general overview and seperates dumps into different categories. It will introduce IPCS as a powerful tool to analyze unformatted dumps and will show at different examples, how fast the root of a problem can be determined in the area of Unix System Services using a dump.

Matthias is a zSeries Software Support Specialist focused on z/OS base components and primarily working on defects in the area of the z/OS kernel as well as Unix System Services for the IBM zSeries Systemsupport in Germany. Matthias is working now since 15 years in the area of z/OS SCP (system control program) defect support and since 12 years supporting Unix System Services. He is a member of the european virtual frontend providing L2 support frontended to component specific change teams in the US. A former project has been the development of the 'ITSO OMVS Training Camp' course material for example. He frequently presents USS problem debug information at the z/OS Guide GSE conference in Lahnstein, Germany. He was a speaker at the 2010 GSE Nordics Conference as well.