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Updating the Java software development kit in a Liberty ZIP archive installation

If you installed Liberty with IBM® SDK, Java™ Technology Edition, Version 8 by extracting a ZIP archive file, you can update the Java software development kit (SDK) to incorporate Java service releases and interim fixes.

About this task

The directories in the following procedures are based on Liberty installations that were installed by extracting a wlp-webProfile7-java8-<platform>-<architecture>-<fix_pack>.zip file, available from IBM Fix Central. If you separately installed or moved the IBM Java SDK to a different location, you can update the SDK by replacing the files at their current location.


  1. Download the IBM SDK, Java Technology Edition, Version 8 ZIP archive file by following the link from IBM Java SDKs for WebSphere Liberty.

    If you are applying a Java service release or interim fix that is associated with a certain APAR, see the APAR text for download information.

  2. Extract the Java SDK ZIP archive file to a local directory.
  3. Back up the wlp/java/java directory in your Liberty installation by renaming the folder.
    For example, rename the wlp/java/java directory to wlp/java/java_backup.
  4. Copy the sdk folder from the directory where you extracted the Java SDK ZIP archive file to the wlp/java directory. Rename the new wlp/java/sdk directory to wlp/java/java.

What to do next

After you verify that IBM SDK, Java Technology Edition, Version 8 updated successfully, delete the Java backup directory.