EBS R12 integration with OAM 11g is covered in detail (with step by step instruction) in eBook eBook – E-Business Suite Integration with OID/OAM for Single Sign-On that I co-authored with Neha Mittal
This book also cover configuring logout (oacleanup.html) during AccessGate deployment by supplying Logout Page with paramater –DWebgateLogoutURL like
-DWebgateLogoutURL=http://innowave12.com:7777/public/oacleanup.html
When user clicks on logout link, this URL will logout user from both OAM and E-Business Suite Application and present user again AccessGate Login Page .
One of our readers requirement was that after logout instead of presenting Login Page, system should redirect User to different URL like (company’s website http://myCompnay.com)
To achieve this you use end_url as query parameter for logoutURL so during Access Gate deployment use -DWebgateLogoutURL like
-DWebgateLogoutURL=http://innowave12.com:7777/public/oacleanup.html?end_url=http://myCompany.com
More on Logouts in OAM 11g here