The Liberty profile offers a self-extracting archive-based installation as an alternative to using IBM® Installation Manager. If you installed the Liberty profile by using the self-extracting archive, and want to upgrade to the latest fix pack version, you can apply a new fix pack archive to a new location, and migrate any required user files and server configuration data.
If you used IBM Installation Manager to install the Liberty profile, you must use Installation Manager to apply a fix pack.
If the WLP_USER_DIR environment variable has been set on your system, then the new runtime environment will continue to use the same location. This results in no backup of server configuration data. To ensure that your server configuration is backed up, copy the directory referenced by WLP_USER_DIR to a new location on your file system. To protect the original environment, change the value of WLP_USER_DIR to point to the new location. During uninstallation, reset the value of WLP_USER_DIR to the location of the original server configuration.
If WLP_USER_DIR has not been set, the server configuration and shared resources are stored in the usr directory at the root of the server's runtime environment (for example, <liberty_server_runtime_root>/usr). During uninstallation of the runtime environment, you can reset the WLP_USER_DIR environment variable.
If the WLP_OUTPUT_DIR environment variable is set on your system, the new server also uses this location. This can result in old log files being overwritten. To ensure that old log files are protected, either update or unset the WLP_OUTPUT_DIR environment variable. During uninstallation, reset this value to its original value.
If the WLP_OUTPUT_DIR value is not set, the default location is in the server root directory (for example <liberty_server_runtime_root>/usr/servers/<serverName>). If the new runtime environment is installed to a new location, no updates are required during installation or uninstallation because logs continue to appear under the usr/servers/<serverName>/logs directory of each respective installation.