Installing service to WebSphere Application Server for z/OS

Maintaining the base z/OS environment in addition to WebSphere Application Server can require an in-depth knowledge of applying service and the product service stream. This is especially important in a high yield production environment where availability is of the utmost importance. Therefore, planning service and knowing how to best apply service are essential skills.

Before you begin

Contact the IBM Software Support Center for information about preventive service planning (PSP) upgrades for WebSphere Application Server for z/OS. For more information about PSP upgrades, see WebSphere Application Server for z/OS V5.0: Program Directory. Although the Program Directory contains a list of required program temporary fixes (PTFs), the most current information is available from the IBM Software Support Center.

Why and when to perform this task

Use the following procedure whenever you wish to apply a new service release to your system.

Steps for this task

  1. Make copies of your product data sets and HFS structure.
  2. Ensure your deployment manager node is at the same or a later service level than the application server nodes.
  3. Apply the desired maintenance to the copies of your product data set and HFS structure.

    Note: Notice if you receive WTOR message BBOO0286A when applying your service. This is significant because it means the service you installed contains defects that are not backwards-compatible and you must therefore run the backoutPTF.sh script if you want to backout the service later.

  4. Stop the Application Servers and the WebSphere Application Server for z/OS location service daemon.
  5. Stop CTRACE.
  6. Switch to the newly-serviced WebSphere Application Server for z/OS product data sets.
    You can do this one of two ways:
    1. Rename the new data sets to replace the old ones.
    2. Recatalog the product data sets, if the names are identical, or change WebSphere Application Server for z/OS cataloged procedures to refer explicitly to the new data sets.

      Note: If you use new data set names, you need to also handle program controls, so ensure you update the program control list.

    Verify that the MVS link list and APF list refer to the newly-serviced data sets.
  7. If the WebSphere Application Server for z/OS run-time is loaded into the link pack area, delete the old modules and load the new ones, or IPL the system to load the new modules into the LPA.
  8. Verify that the newly-serviced HFS data sets are correctly mounted.
  9. Perform any other migration actions as instructed in PTF or APAR cover letters.
  10. Start the location service daemon and Application Servers.
  11. Complete any necessary post-install tasks.

Results

You can maintain service to clients when upgrading the host cluster of WebSphere Application Server for z/OS.

Related tasks
Installing new releases and maintenance levels of WebSphere Application Server for z/OS



Searchable topic ID:   tins_installService
Last updated: Jun 21, 2007 9:56:50 PM CDT    WebSphere Application Server for z/OS, Version 5.0.2
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