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Don't let Java OutOfMemoryError get your CICS down


Java has rapidly become the programming languages of choice for application modernisation on z/OS, but deploying these new applications onto the platform can require a new understanding of how to manage the subsystems within which JVMs are deployed.
Not understanding the memory utilisation of Java applications could bring your modernisation dreams to a sticky end.  Fear Not!  as this session will explain how the Java Virtual Machine (JVM) allocates and manages the MVS storage it needs and show you how to ensure JVMs can be managed and monitored in a both a CICS and batch environment, using a combination of the latest JVM tools, CICS facilities and traditional MVS dumps and IPCS.  Leaving you with the confidence that you need to manage Java applications not just in CICS but anywhere on z/OS and realise your modernisation dreams.


Stream: CICS
Room: Hungaroring
Time: 10:15 - 11:15


  • Phil Wakelin at IBM UK LTD.
  • Phil Wakelin is a member of the CICS strategy and design team at IBM UK in Hursley and currently works with CICS Java customers to help them transition into the world of Java on z/OS. He was the development Hill lead for the CICS TS V5.3 Liberty development team and recently provided oversight for new CICS TS V5.5 capabilities. He is a prolific author having worked on over 20 IBM Redbooks, numerous white papers, blogs Support Pacs and Git repos.



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