A periodic “heartbeat” is maintained between the applet that launches the client and the Management and Security Server to prevent the server from timing out due to inactivity. If a heartbeat between the client and server is not maintained, configuration work can be lost when the inactivity timer expires.
To prevent the loss of work when undergoing lengthy configurations, such as keyboard mappings or macros, you can modify the heartbeat services that affect session management and the links list.
NOTE:If you use SiteMinder (or something similar) to control access to terminal sessions, see Using Crumb Mode (below) to set a heartbeat.