Database Reference
In-Depth Information
• Mediator Services
• Oracle Service Bus Proxy / Business Services
Asynchronous request and response
In asynchronous interactions, the client sends the request, and the service provider
may or may not respond immediately.
AsynchronousBPELservicesusetheInvokeactivity.Theresponsewillusuallydelay
the calling service, and the client may choose to do other activities without waiting
for a response. The response could be data or an error message.
One request and multiple responses
The client sends a single request and receives multiple responses. For the client
BPEL services, there is one Invoke activity for sending the request, and multiple Re-
ceive activities grouped in a sequence. For the BPEL services, there should be one
Receive activity and multiple Invoke activities for each reply grouped in a sequence.
As shown in the next figure, multiple Receive activities can be grouped together us-
ing a sequence:
