Question

I have been trying to access the below code

DECLARE
       N_DEPTNO DEPT.DEPTNO %TYPE :=&DEPT_NUM;
       V_DNAME DEPT.DNAME %TYPE;
       NOT_ENOUGH_VALUES EXCEPTION;
       PRAGMA
             EXCEPTION_INIT(NOT_ENOUGH_VALUES,-06502);
BEGIN
       SELECT DNAME,LOC INTO DNAME FROM DEPT
       WHERE DEPTNO = N_DEPTNO;

       DBMS_OUTPUT.PUT_LINE('Successfully Fetched !!');
EXCEPTION
       WHEN NOT_ENOUGH_VALUES THEN
       DBMS_OUTPUT.PUT_LINE('No Enough Values ... ');
END;

It is still showing error message after specified it in EXCEPTION block.

Can i handle these type of errors using PRAGMA EXCEPTION_INIT
i.e not providing enough values in the select statement…

If not what type of errors can be handled in System Defined Unnamed Exception
using PRAGMA EXCEPTION_INIT.

Answer 1

Exception handlers can catch runtime errors. They cannot catch compilation errors. The compiler figures out when it is compiling your code that it is syntactically invalid– not enough values are specified in the INTO clause. So the exception is raised before your code is executed.