In this post, you’ll learn more about the Oracle ErrorORA-28273: No mapping for user nickname to LDAP distinguished name exists. with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-28273: No mapping for user nickname to LDAP distinguished name exists.
Reason for the Error ORA-28273: No mapping for user nickname to LDAP distinguished name exists.
ORACLE server cannot map the given user nickname to LDAP distinguished name.
How to fix the Error ORA-28273: No mapping for user nickname to LDAP distinguished name exists. ?
You can fix this error in Oracle by following the below steps
Make sure user entries in LDAP are correctly provisioned with correct user nickname attribute values.