These configuration items define Transformer’s application-level heartbeat messaging.
heartbeat-symbol specifies the symbol name (subject) of the application level heartbeat object.
The name can contain the parameters
%a At run-time,
%h is replaced by the host name of the machine on which the Transformer is running, and
%a is replaced by the Transformer’s DataSource
NULL (application-level heartbeats are disabled)
heartbeat-symbol-time specifies the time interval in seconds between updates of the time stamp in the application-level heartbeat object.