There are no error messages in SQL Navigator, it runs just fine, but it is creating a "ORA-01403" record in the "DBA-Audit" Table when connecting to a 12c release 2 Server:
WHERE owner = :owner
AND object_name = :name
AND object_type = :type
AND status = 'VALID';
: ORA-01403: no data found
: ORA-06512: at line 2
The error occurs just logging in.
NOTE: the error is not in the 12c release 1 "DBA-Audit" Table, when connecting to that Server-Version there are no issues.