Message Oracle ORA-28271 - No permission to read user entry in LDAP directory service.

ERRORNo permission to read user entry in LDAP directory service.
CAUSEORACLE server does not have read permission on user nicknames X.500 user entry.
ACTIONMake sure ORACLE server is using right SSL credentials to connect to LDAP directory services. Make sure permissions for LDAP user entries are right.