Best Practices from Oracle Development's A‑Team

Quick tip: OVD – Providing namespace translation for DN attributes

Andre Correa Neto
Cloud Solutions Architect

Breaking off the ADF/OPSS series…

OVD (Oracle Virtual Directory) guru Mark Wilcox gave me this really helpful tip that it’s worth sharing. It can save you folks quite a bit of headache.

Scenario: you have configured an OVD authentication provider in WLS, but you cannot login with any user from OVD in WLS Console, even the user being a member of an Administrators group in the backend LDAP directory. When you try it, you end up with an “Authentication Denied” error. And if you login into WLS Console in the “normal” way (i.e., using weblogic user from Default Authenticator provider) you don’t see the OVD users memberships. These two problems are definitely related.

Solution: you need to change the LDAP adapter definition in OVD a bit. Connect to ODSM (Oracle Directory Services Manager), retrieve your adapter, click on the General tab and add uniquemeber as one of DN Attributes, as shown:


OVD translates all attributes listed as DN Attributes. Translation here means converting the backend repository (in this case OID) namespace into the adapter’s namespace. In this example, OID namespace is dc=us,dc=oracle,dc=com, while adapter’s is ou=oid,dc=us,dc=oracle,dc=com. Without the translation, uniquemembers of a group would end up being cn=<user>,dc=us,dc=oracle,dc=com. With the translation, they align nicely with the adapter’s namespace: cn=<user>,ou=oid,dc=us,dc=oracle,dc=com.

No need to restart anything. You should now be able to see users memberships as well as login in WLS Console with administrators users defined in the OVD authentication provider.

Note: this has been done in Oracle Identity Management 11g PS2.

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