SQL>
SQL> DECLARE
2 TYPE t_NumTab IS TABLE OF NUMBER
3 INDEX BY BINARY_INTEGER;
4 v_TempVAR t_NumTab;
5 BEGIN
6 v_TempVAR(NULL) := 4;
7 END;
8 /
DECLARE
*
ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error: NULL index table key value
ORA-06512: at line 6
SQL>