In My opinion , Your Error is not because of select menu... instead because of "setRollbackOnly()" .. this method is called after the response is committed.. check where u make this call and which field is binded to it...
Joined: Jul 19, 2005
One more thing u mite have used the FacesContext.RenderResponse() method and make some method call after that which will throw error... because u can not call anything after response complete method..
Joined: Jun 06, 2006
Hi, I am using rational developer 6.01. I don't know where those method would be called. I don't have setrool ack in my method.