SQL>
SQL> SET SERVEROUTPUT ON
SQL> DECLARE
2 v_first_name CONSTANT VARCHAR2(50) := 'Ron';
3 BEGIN
4 v_first_name := 'Ronald';
5 EXCEPTION
6 WHEN OTHERS
7 THEN
8 DBMS_OUTPUT.PUT_LINE(SQLERRM);
9 END;
10 /
v_first_name := 'Ronald';
*
ERROR at line 4:
ORA-06550: line 4, column 4:
PLS-00363: expression 'V_FIRST_NAME' cannot be used as an assignment target
ORA-06550: line 4, column 4:
PL/SQL: Statement ignored
SQL>