Setting up Java support

The following steps tell you how to verify your Java installation and set up JVMs in your CICS® system using the supplied Java sample programs.

  1. Verify that your Java components are installed correctly using the supplied checklist in The CICS Transaction Server for z/OS® Installation Guide
  2. Give your CICS region permission to access the resources held in the hierarchical file store (HFS).

    In order to create JVMs, CICS requires access to directories and files that z/OS UNIX System Services holds in HFS. Giving CICS regions access to z/OS UNIX System Services and HFS directories and files tells you how to do this.

  3. Run the Java sample programs to verify that Java works in your region. Verifying the Java installation using sample programs contains a task list that describes how to set up and run the supplied sample programs.
When you have run the supplied Java sample programs, read through the Understanding JVMs section for conceptual information on how to use JVMs in CICS. Then read the section Using JVMs to find out how to create and customize your JVM profiles and properties files, manage the shared class cache and perform tasks such as monitoring and debugging your Java applications.