Installing Liberty interim fixes and fix packs on z/OS operating systems
Fix packs contain bundled service to bring WebSphere® Application Server for z/OS® Liberty up to a new level. Interim fixes provide corrective service for specific known problems. You can use IBM® Installation Manager to update the offering with the fixes that are available for your service level of WebSphere Application Server for z/OS Liberty.
Before you begin
The Liberty end of support date for Java SE 8 is October 2026,V26.0.0.10.
Java SE 11 is available and requires V22.0.0.9 or later.
The Liberty end of
support date for Java SE 11 is October 2024, V24.0.0.10.
Contact the IBM Software Support Center for information about updates for WebSphere Application Server Liberty for z/OS. For more information about upgrades, see the WebSphere Application Server for z/OS: Program Directory. The most current information is available from the IBM Software Support Center and Fix Central.
When you install a fix pack, Installation Manager automatically reapplies any installed interim
fixes if they apply to the updated fix pack level. Interim fixes that do not apply, such as if the
updated fix pack contains the fix, are uninstalled. In some cases, Installation Manager must
uninstall an interim fix that you must manually reapply. For example, you might update to a fix pack
that does not contain the fix and requires an updated interim fix level. Installation Manager
notifies you if any interim fixes must be manually reapplied. You can verify which interim fixes are
installed by running the productInfo version --ifixes
command.
You must have IBM Installation Manager Version 1.8.5 or later.
Through version 19.0.0.8, the minimum acceptable version of IBM Installation Manager is 1.8.5.
As of version 19.0.0.9, the minimum acceptable version of IBM Installation Manager is 1.9.0.
If you want to install Liberty assets from local directory-based repositories or an instance of the Liberty Asset Repository Service, configure the repositories. For more information about the Liberty asset repositories, see Installing assets using Installation Manager.