Oracle: replacing tnsnames.ora with LDAP lookup?

How do I go about replacing client-side tnsnames.ora with an ldap query?

I'm not interested in running Oracle LDAP, we have an existing LDAP infrastructure.

I need:

• format of LDAP entry

• how client is configured to fetch the LDAP connection information. Is this automatic in the OCI runtime?

Oracle 10.2 or 11.x if versions matter.

From serverfault Mark Harrison

• Oracle can "officially" only use OID or AD as LDAP servers. In LDAP.ORA (in $ORACLE_HOME/network/admin or $TNS_ADMIN) put:

  DEFAULT_ADMIN_CONTEXT = “ou=ora,dc=company,dc=com”
  DIRECTORY_SERVERS = (ldap1.company.com:389, ldap2.company.com:389)
  DIRECTORY_SERVER_TYPE = OID
  

  The type can be OID or AD. The multiple servers are for redundancy; it will not try each one in turn. Then in SQLNET.ORA:

  NAMES.DIRECTORY_PATH=(LDAP, TNSNAMES)
  

  The means try LDAP first, then try TNSNAMES.ORA, then give up.

  If you want to use a third-party LDAP server, Oracle has a product called Virtual Directory that will act as a proxy between them.

  From Gaius