If you attach a debugging session to a web server, set a breakpoint in a web service, and then invoke the web service from the Oxygen SOAP analyser, a dialog will come up saying that the analyser is awaiting a response from the server. However, the server is not going to respond because the breakpoint is hit. The dialog is modal, so you can't do anything. To make matters worse, the cancel button does nothing. The only way out of this situation is to kill the Eclipse process.