File name: tins_postinstall.html
Applying a service level or restoring to the previous accepted
service level
Service that is applied to the WebSphere® Application
Server for z/OS® product datasets 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.
About this task
Most of these post-maintenance or post-installation 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-installation 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
datasets 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
- 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-installation detects
service to be applied. In some cases, some post-installation 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.
- Optional: You might find it useful to set up
a WLM rule to combat performance problems related to post-installation.
In this information ...
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