Getting error while trying to create a view

Question

Hi,
I'm creating a view , but when I try to create it is giving "ORA-02338 missing or invalid column constraint specification".
The syntax I used for creating view is:
create or replace view XYZ_VIEW of "XYZ_OBJECT" with object oid id1, id2)
(arg1,arg2) as
where XYZ_OBJECT is an object type declared as
CREATE OR REPLACE TYPE "XYZ_OBJECT"
(arg1 varchar2(50),
arg2 varchar2(50)
Thanks in advance
Sujith

Answer 1

It's interesting that Oracle resolves SELECT * FROM for ordinary views but not for object views, at least in 9.2.
SQL> CREATE OR REPLACE VIEW xyz_view OF xyz_object
  2    WITH OBJECT IDENTIFIER (arg1)
  3  AS SELECT * FROM xyz_table;
View created.
SQL> select * from  xyz_view ;
ARG1                 ARG2
APC                  XYZ
SQL> set long 5000
SQL> select TEXT from user_views where view_name = 'XYZ_VIEW';
TEXT
SELECT * FROM xyz_table
SQL> alter table xyz_table add (col3 number);
Table altered.
SQL> select * from  xyz_view ;
select * from  xyz_view
ERROR at line 1:
ORA-04063: view "APC.XYZ_VIEW" has errors
SQL>                drop view xyz_view ;
View dropped.
SQL> create  view xyz_view as select * from xyz_table;
View created.
SQL>  select TEXT from user_views where view_name = 'XYZ_VIEW';
TEXT
select "A","B","COL3" from xyz_table
SQL> Does anybody know if this behaviour is different in 10g?
Chers, APC