Updating and uninstalling Liberty on z/OS

You can use IBM® Installation Manager to update or uninstall the WebSphere® Application Server for z/OS® Liberty offering.

[17.0.0.3 and later]Important: Support for using Java™ SE 6 with WebSphere Liberty ended in September 2017. The Liberty kernel was recompiled for 17.0.0.3. Beginning with 17.0.0.3, the Liberty kernel no longer runs with Java SE 6. If you continue to use Java SE 6 on earlier releases after the end of support date, you might expose your environment to security risks.

Java SE 8 is the recommended Java SDK because it provides the latest features and security updates. As an alternative to installing Java SE 8, you can install another supported Java SDK version.

Optional features

Certain features can be added or removed from an installed copy of the WebSphere Application Server for z/OS Liberty offering. These are called optional features. Choose the optional features for each copy of the WebSphere Application Server for z/OS Liberty code according to your needs.

See Adding and removing Liberty features on z/OS.

Maintenance

IBM regularly provides updates to the WebSphere Application Server for z/OS Liberty offering to fix defects and add new function. Fix packs contain bundled service to bring WebSphere Application Server for z/OS Liberty up to a new level. Interim fixes provide updates to correct individual defects. See Installing Liberty interim fixes and fix packs on z/OS operating systems .

New: Fix pack 16.0.0.2 is the next Liberty fix pack after 8.5.5.9. For more information about changes in Liberty fix pack numbering and delivery, see What is new in this release of Liberty.

Uninstalling the offering

You can use IBM Installation Manager to uninstall individual copies of WebSphere Application Server for z/OS Liberty offering code.

See Uninstalling Liberty offerings on z/OS.


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