When I try to call the obiee analytics using URL as:

http://<serverIp>:port/analytics/saw.dll?Dashboard&nqUser=<username>&nqPassword=<password>

First time it works ok and the username/ password parameters will disappear from the url. But if I close the browser tab (Not close the hole browser) and try to run the url, the dashboard will open but the username and password will appear on the url.

I know this is because the user session is still active but is there anyway I can hide the username/password from url even if the user session is still active? or is there anyway to get sessionId and I deactivate it before calling the url?

OBIEE 11g

Thanks.