Problem Collection of Collection with plsql

Question

declare
TYPE t_a is record (
x VARCHAR2(32767),
w number
TYPE t_a_dtl IS VARRAY (10000) OF t_a;
TYPE t_b is record (
y varchar2(10),
z t_a_dtl
TYPE t_b_dtl IS VARRAY (10000) OF t_b;
i number := 1;
ii number := 1;
p_b t_b_dtl := t_b_dtl();
begin
p_b.extend(1);
p_b(i).z.extend(1);
p_b(i).y := 'celio';
p_b(i).z(ii).x := 'item1';
-- p_b(i).z(ii).w := 1;
-- ii := ii+1;
-- p_b(i).z(ii).x := 'item2';
-- p_b(i).z(ii).w := 2;
end;
declare
ERROR at line 1:
ORA-06531: Reference to uninitialized collection
ORA-06512: at line 23

Answer 1

am i missing somthing? it is working for me
SQL> select * from v$version
  2  ;
BANNER
Oracle9i Enterprise Edition Release 9.2.0.8.0 - 64bit Production
PL/SQL Release 9.2.0.8.0 - Production
CORE    9.2.0.8.0       Production
TNS for HPUX: Version 9.2.0.8.0 - Production
NLSRTL Version 9.2.0.8.0 - Production
SQL> DECLARE
  2    TYPE t_a IS RECORD (
  3      x                     VARCHAR2 (32767),
  4      w                     NUMBER
  5    );
  6 
  7    TYPE t_a_dtl IS VARRAY (10000) OF t_a;
  8 
  9    TYPE t_b IS RECORD (
10      y                     VARCHAR2 (10),
11      z                     t_a_dtl
12    );
13 
14    TYPE t_b_dtl IS VARRAY (10000) OF t_b;
15 
16    i                     NUMBER := 1;
17    ii                    NUMBER := 1;
18    p_b                   t_b_dtl := t_b_dtl ();
19  BEGIN
20  --
21    p_b.EXTEND (1);
22    p_b (i).z.EXTEND (1);
23    p_b (i).y      := 'celio';
24    p_b (i).z (ii).x := 'item1';
25    DBMS_OUTPUT.put_line(p_b (i).z (ii).x);
26  END;
27  /
item1
PL/SQL procedure successfully completed.