When a situation event from a sampled situation is forwarded to the Tivoli® Netcool/OMNIbus ObjectServer and that event is later deleted or cleared in the ObjectServer, the behavior of the bidirectional event synchronization architecture is to send a request to the hub Tivoli Enterprise Monitoring Server to acknowledge the situation with a specified timeout.
The reason for this behavior is that you cannot close sampled situation events unless the monitoring agent determines the situation condition is no longer true.
If the acknowledgment timeout of the situation expires and the situation is still true, IBM® Tivoli Monitoring sends an acknowledgement expiration status update event to Netcool/OMNIbus. The status update event causes a new event to be opened in the Netcool/OMNIbus ObjectServer and the Netcool/OMNIbus operator is notified that the event condition has not been resolved. If the situation condition becomes false, then the event is closed in IBM Tivoli Monitoring, and the event remains cleared in the Netcool/OMNIbus ObjectServer.