Installing the Load Balancing Plug-in Overwrites an Existing Plug-in (ID 6172977)

If you install the Load Balancing plug-in against an installation of the Application Server that already has a load balancing plug-in installed (for example, from 7.1EE), the 8.2EE plug-in silently replaces any existing load balancer, even if you have created a new server instance in which to run the plug-in.

The plug-in files are installed by default under the install_dir/plugins/lbplugin directory, which means that only one version of a plug-in can be used with any one Application Server installation. Note that the console installer does display a message indicating that an uninstallation is being performed, but this message can easily be missed.

Solution

Not everyone will encounter this problem. If you do encounter the problem, remove the old Application Server installation and perform a fresh installation rather than performing an upgrade installation.