[z/OS]

Applying a service level or restoring to the previous accepted service level

About this task

Service that is applied to the WebSphere Application Server for z/OS product data sets and product file systems occasionally requires corresponding changes to be made to the configuration file systems for existing application serving environments that configure at a lower service level. Most of these "post-maintenance" or "post-install" updates can be performed automatically. This is done by the post-installer.

The WebSphere Application Server for z/OS post-installer is a set of scripts that can be used to:
  • Automatically detect and apply post-PTF service
  • Back out (uninstall) service from the configuration HFS when returning to an older service level
The post-install process is performed at the node level and must run against each node's WebSphere Application Server home directory after maintenance is applied to the product data sets and HFS, and before the node is started. For more information about the post-installer and how to use it to apply or back out service to the configuration HFS, see the following references:

Procedure

  1. Perform the post-install process in ether of two ways.
    • Automatically by leaving the configured JCL statements in the controller cataloged procedures that start the post-installer

      A console message will be displayed whenever the post-install detects service to be applied. In some cases, some post-install steps might still have to be performed manually. The post-installer will detect these situations and refuse to start the server.

    • Manually

      You can run the post-installer yourself against each node's WebSphere Application Server home directory after installing maintenance and before starting the nodes.

  2. Optional: You might find it useful to set up a WLM rule to combat performance problems related to post-install.



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Last updatedLast updated: Aug 31, 2013 4:28:44 AM CDT
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