How to locate the error row in Oracle

-- The location where exceptions and exceptions are captured in Oracle can be used to debug stored procedures, especially for a long time.
DECLARE
V_RATE NUMBER; -- Ratio
V_RETINFO VARCHAR2 (2000); -- exception information
BEGIN

SELECT 120/0 INTO V_RATE from dual;

-- Exception Handling
EXCEPTION WHEN OTHERS THEN
V_RETINFO: = SQLERRM | CHR (10) | SUBSTR (DBMS_UTILITY.FORMAT_ERROR_BACKTRACE,); -- Obtain the exception information and the initial location of the exception thrown [row]
DBMS_OUTPUT.PUT_LINE (V_RETINFO );
END;
Run the above Code in pl/SQL developer to view the output
 
ORA-01476: divisor is equal to zero
ORA-06512: at line 6