Here is the policy in action. You can see that the Vordel Gateway creates a hyperlink to Google, to ask the user to select their account. If you look at the status bar in the screenshot below, you can see the OpenID string generated by the Vordel Gateway:
When I click the link, I am asked which Google account I want to use to log into the service. Google shows me the two accounts which I am currently logged into:
Once I choose the Google Account, I see that the Vordel Gateway has generated an Oracle Access Manager obsso cookie, which is visible in Firefox:
If you're interested in getting a copy of the policies I used for this, contact Vordel at info@vordel.com . For more information, including videos, about Vordel Gateway interop with various Oracle products, check out: http://www.vordel.com/oracle/