I don’t really like what Oracle did with BAM user/roles and authentication.
I believe they took Microsoft (SQL Server) tables and just slapped them into Oracle (now requiring that we put quotes around tables and columns). I assume this process will change in the upcoming releases, but here is a quick SQL statement you can use to get a look at your users and their roles as BAM understands them:
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SELECT iu."SysIterName" username, iur."RoleName" userrole FROM orabam."SysIterUser" iu, orabam."SysIterRoleUserMapping" iur WHERE iur."UserID" = iu."SysIterID" ORDER BY iu."SysIterName"