How to integrate stand alone BI publisher with Sunone LDAP?

 We installed BI Publisher 10.1.3.4.2 stand alone version and OC4J 10.1.3.5 stand alone on Red Hat 5. We created an admin user account bipub_admin in ldap and assigned the XMPL_XXX groups to the user, following patch 10023449 readme guide, written for AD. If we set cn=bipub_admin in ldap, this account can be authenticated by ldap from BI Publisher. However, regular user authentication failed because the search filter for regular user in our organization is uid, not cn, we use cn for group search. The ldap log showed that "cn" was used for the search instead of uid. If we set uid=bipub_admin, then this account would also fail to authenticate, but for reason of unsupported extension.