Description: When using database listeners in ALM/LPM the listeners may occasionally stop. Usually on a reboot but the effect may also happen when communication is temporarily lost to the database server.
Cause: The listeners automatically shut down if they are unable to reach the assigned database in a certain amount of time. An enhancement request to restart the listeners has been submitted. ALM/LPM Enhancements
Resolution: Set the poll interval in the listener higher. The problem is most common when the poll interval is set to 1 minute. Increasing the time to even just 2 minutes will help the problem but greater times will increase the reliability.