Sometimes even a well-planned upgrade operation fails to go smoothly. In such cases, you need a plan to roll back smoothly to the pre-upgrade version.
For OpenAM servers, you can roll back by restoring from file system backup. If you use an external configuration directory service, restore the old configuration from LDIF before restarting the old servers.
For web policy agents, you can roll back by restoring from file system backup. If you used configuration only available to newer agents, restore the pre-upgrade configuration before restarting the old agents.
For Java EE policy agents, uninstall the newer agents and reinstall the older agents, including the old configurations.