If you would like to return or display pl/sql program unit name when there is an error, you can use code some thing like below.
create or replace procedure test….
is…
begin…
exception
when others then
dbms_output.put_line($$PLSQL_UNIT||’ caused error’);
end;
Using the PL/SQL Directive $$PLSQL_UNIT displays the pl/sql unit name (in this case test, is the name of the procedure ), when exception raised.
Another directive is $$PLSQL_LINE can be used to identify the line number in the program unit.
Oracle 12c database introduced new directives to display additional information as below.
$$PLSQL_OWNER – Owner of the object
$$PLSQL_TYPE - Whether it is procedure, function etc.
This addition would be very useful for developers to identify the owner of the program unit and type.
Oracle Enablement 