If the presentation and application logic layers are running on WebSphere(R) Business Integration Server Foundation, the application can use ActivitySessions to manage sessions and improve performance.
To use ActivitySession to manage sessions, you must configure the application to do so. See Setting up the application to use ActivitySessions for information on the configuration required to use ActivitySessions.
Note that the application can only have one ActivitySession running at any given moment. Attempting to launch a second one or trying to nest ActivitySessions results in a UnSupportActivitySessionFeatureException. For this reason, it is important to stop ActivitySessions when applications no longer need them.