I created business & proxy service (consume URI) in OSB. Now service is changed. Is there possibility to simply refresh/renew business/proxy service in Eclipse or I have to delete it and create it again?
If you mean that the osb project name has changed and you want to reuse the same resources, then you can try the Move option on the resource or use the Clone resource option.
There might be some conflicts that you will have to resolve if you use the clone with proxies and ws-ploicy files.
Service Cloning is the answer!
That is - if you are using sbconsole, on creating a session, and browsing to the service which you wish to clone, that would be third symbol under "Options" for that particular resource.