Installing and uninstalling Liberty fix packs
You can use IBM® Installation Manager Version 1.8.5 or later to update the product with the fix packs that are available for your service level of the product. Uninstalling fix packs to a previously installed level is called rolling back.
Before you begin
Through version 18.104.22.168, the minimum acceptable version of IBM Installation Manager is 1.8.5.
As of version 22.214.171.124, the minimum acceptable version of IBM Installation Manager is 1.9.0.
Java SE 17 is the recommended Java SDK because it provides the latest features and security updates. As an alternative to installing Java SE 17, you can install another supported Java SDK version. Liberty runs on any of the Java SE versions that are listed in the Supported Java Releases table on the Open Liberty website.
For the most current information about upgrades for Liberty and its associated software, see the IBM Software Support Center and Fix Central.
For a list of fix packs that are available for Liberty and its associated software and for specific information about each fix pack, perform the following actions.
- Go to Fix Central.
- Click Find product.
- Select WebSphere Liberty as the product group.
- Select the version of the product to be updated.
- Select your operating system as the platform, and click Continue.
- Select Browse for fixes, and click Continue.
- Click More Information under each fix to view information about the fix.
About this task
Installation Manager can install any fix-pack level of the product directly without installing the intermediate fix packs; in fact, Installation Manager installs the latest level by default. For example, you can skip fix-pack levels and go from fix pack 126.96.36.199 directly to fix pack 188.8.131.52. Keep in mind, however, that later you can not roll back to any level that was skipped. If you directly install to fix pack 184.108.40.206, for example, you cannot roll back to fix pack 220.127.116.11. If you skip from fix pack 18.104.22.168 to 22.214.171.124, you can only roll back to 126.96.36.199. The same principle also applies to the common IBM Java SDK fix packs.
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.
com.ibm.java.jdk.v8, all updates are installed and uninstalled using the method for fix packs described in this section. Individual fixes for WebSphere Java SDKs, such as
com.ibm.websphere.liberty.IBMJAVA.v70, continue to be packaged as interim fixes and can be installed and uninstalled using the method described in Installing and uninstalling Liberty interim fixes.