Fast Application Notification (FAN) is a facility provided by Oracle Database to allow database clients to know about changes in the state of the database. These notifications let an application respond proactively to events such as a planned outage of a RAC node or an imbalance in database load. Tuxedo Advanced Performance Pack provides support for FAN notifications by a system server TMFAN that can monitor Oracle RAC instance and notify Tuxedo application server to establish a new Database connection in case of Database instance up or down.

For more information about configuration, see Introduction to Using Oracle Tuxedo Advanced Performance Pack.