File name: tins_prodmaintenance.html![[z/OS]](../../ngzos.gif)
Applying product maintenance
Maintaining WebSphere Application Server requires an in-depth knowledge
of MVS service techniques 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 the
WebSphere Application
Server for z/OS: 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.
The z/OS System Modification
Program Extended (SMP/E) program is used to apply product maintenance to
WebSphere Application Server for z/OS. The WebSphere Application Server update
installer is not used under z/OS. A set of scripts called the post-installer,
a part of WebSphere Application Server for z/OS, is used to make any configuration
file system changes that are required as a consequence of product-maintenance.
About this task
Use the following procedure whenever you want to apply a new service
release to your system.
Procedure
- Decide whether to run the post-installer automatically or manually.
See Applying a service level or restoring to the previous accepted service level for more information.
- Make copies of your product data sets and file system structure.
- Ensure your deployment manager node is at the same or a later service
level than the application server nodes.
- Use SMP/E to apply the required maintenance to the copies of your
product data set and file system 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.
- Stop the application servers and the WebSphere Application Server
for z/OS location service daemon.
- Stop CTRACE.
- Switch to the newly serviced WebSphere Application Server for z/OS
product data sets. You can do this one of two ways:
- Rename the new data sets to replace the old ones.
- 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.
- If STEPLIBS are being used, you need to ensure that the correct
STEPLIBS have been exported in setupCmdline.sh. For more information, refer
toLink pack area, link list, and STEPLIB .
- If the WebSphere Application Server for z/OS runtime 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.
- Verify that the newly-serviced product file system is correctly
mounted.
- Perform any other migration actions as instructed in PTF or APAR
cover letters.
- Start the location service daemon and application servers.
- Complete any necessary post-install tasks. In particular, make
sure that the post-installer is run (either automatically or manually) against
each node, in order to update the configuration file system to the new service
level. For more information, refer to Completing post-installation tasks after using SMP/E to apply a new service level.
In this information ...
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