8.3 Sending Unsolicited Messages
The Oracle Tuxedo system allows unsolicited messages to be sent to client processes without disturbing the processing of request/response calls or conversational communications.
Unsolicited messages can be sent to client processes by name, using tpbroadcast(3c), or by an identifier received with a previously processed message, using tpnotify(3c). Messages sent via tpbroadcast()
can originate either in a service or in another client. Messages sent via tpnotify()
can originate only in a service.