Fix Pack 8550

Uninstalling Liberty fix packs from IBM i operating systems using response files

You can roll back WebSphere® Application Server Liberty - Express® to an earlier version using Installation Manager response files.

Before you begin

During the rollback process, Installation Manager must access files from the earlier version of the package. By default, these files are stored on your computer when you install a package. If you change the default setting or delete the saved files, Installation Manager requires access to the repository that was used to install the earlier version.

Note: In WebSphere Application Server Version 8.5.5.0, the Liberty profile was promoted from a feature to an independently installable offering. After updating to WebSphere Application Server Liberty - Express Version 8.5.5.x from Version 8.5.0.x, you can roll back to the Version 8.5.0.x Liberty profile feature level that you were at before updating. If you previously had a combined full-profile and Liberty-profile installation, the Liberty profile feature will be reinstalled to the wlp folder when you roll back. Any user data and server configurations will not be restored. If necessary, you can copy them from the backed-up location into the new wlp/usr folder after rollback. If any wlp.bak_<timestamp> directories are present in your installation image, they will not be affected by the rollback. If you update and roll back multiple times between Version 8.5.0.x and Version 8.5.5.x levels, therefore, you will have multiple wlp.bak_<timestamp> folders in your installation image. These can always be deleted, copied, or moved without negative impact to your installation.

Procedure

  1. Optional: If the repository requires a username and password, create a credential-storage file to access this repository.
    Tip: When creating a credential-storage file, append /repository.config at the end of the repository URL location if the imutilsc command is unable to find the URL that is specified.
    Note: When you use Installation Manager Version 1.6.2 and later, you should use the -secureStorageFile and -masterPasswordFile options to store credentials in a credential-storage file. In versions of Installation Manager earlier than Version 1.6.2, the -keyring and -password options were used to access credentials in a keyring file. These options were deprecated in Version 1.6.2. There is no migration path from keyring files to storage files because of the differences in the file structures. For more information on using the -secureStorageFile and -masterPasswordFile options to store credentials in a credential-storage file, see the Installation Manager Version 1.6 Information Center. For more information on using the -keyring and -password options to store credentials in a keyring file, see the Installation Manager Version 1.5 Information Center.
  2. Sign on to the IBM® i system with a user profile that has *ALLOBJ and *SECADM special authorities.
  3. Stop all servers and applications on the installation that is being rolled back.
  4. On a CL command line, run the STRQSH command to start the Qshell command shell.
  5. Use a response file to roll back the product.
    Change to the eclipse/tools subdirectory in the directory where you installed Installation Manager, and roll back the product. For example:
    ./imcl
      input $HOME/WASFiles/temp/rollback_response_file.xml 
      -log $HOME/WASFiles/temp/rollback_log.xml 
      -secureStorageFile $HOME/WASFiles/temp/credential.store -masterPasswordFile $HOME/WASFiles/master_password_file.txt
    Note: The program might write important post-installation instructions to standard output.

    For more information on using Installation Manager, read the IBM Installation Manager Information Center.

  6. Optional: List all installed packages to verify the roll back.
    ./imcl listInstalledPackages -long

Example

The following is an example of a response file for rolling back the product to an earlier version.
<?xml version="1.0" encoding="UTF-8"?>
<agent-input>
<server>
  <repository location='https://www.ibm.com/software/repositorymanager/com.ibm.websphere.liberty.EXPRESS.v85'/>
</server>
<profile id='WebSphere Liberty V8.5' installLocation='/QIBM/ProdData/WebSphere/AppServer/V85/Express'>
</profile>
<rollback>
  <offering profile='WebSphere Liberty V8.5' id='com.ibm.websphere.liberty.EXPRESS.v85' version='8.5.5.20101025_2108'/>
</rollback>
</agent-input>
Tips:
  • The profile ID (<profile . . . id='profile_ID' . . . .> and <offering . . . profile='profile_ID' . . . .>) can be found when you run the imcl listInstallationDirectories -verbose command from the eclipse/tools subdirectory in the directory where you installed Installation Manager. It is the same as the package group’s name.
  • The offering ID (<offering . . . id='offering_ID' . . . .>) can be found in WebSphere Application Server product offerings for supported operating systems.
  • The version is a specific version of the offering to which to roll back (8.5.5.20101025_2108 for example).
    This specification is optional.
    • If version is not specified, the installation rolls back to the previously installed version of the offering and all interim fixes for that version are installed.
    • If version is specified, the installation rolls back to the specified earlier version of the offering and no interim fixes for that version are installed.

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Timestamp icon Last updated: Monday, 21 April 2014
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