Oracle Access Manager 11gR1 Patchset 2 (a.k.a. 11.1.1.7) is now certified with E-Business Suite Release 12.0 and 12.1. Applying Oracle Access Manager 11gR1 Patchset 2 will provide you with the latest set of fixes for Oracle Access Manager 11gR1 which have been validated with Oracle E-Business Suite Release 12.0 and 12.1.
Oracle has two single sign-on solutions, Oracle Single Sign-On Server (OSSO) and Oracle Access Manager. Oracle strongly recommends that all new single sign-on implementations use Oracle Access Manager. Oracle Access Manager is the preferred solution going forward, and forms the basis of Oracle Fusion Middleware 11g. Oracle Single Sign-On is no longer being actively developed and will not be ported to Oracle WebLogic Server.