SQL & PL/SQL :: ORA-02303 - Cannot Drop Or Replace A Type With Type Or Table Dependents

i am trying to run a script in which a command tries to create or replace a type.

i get this error:

ORA-02303: cannot drop or replace a type with type or table dependents

SQL>
SQL> --create a test user:
SQL>
SQL> create user tuser identified by tuser

[Code]....

Table created.

SQL>
SQL> --then change the type:
SQL>
SQL> create or replace type t1 as object (obj_type number(15))
2 /
create or replace type t1 as object (obj_type number(15))
*
ERROR at line 1:
ORA-02303: cannot drop or replace a type with type or table dependents

SQL>
SQL> --if i'll do FORCE action on the type - it'll corrupt my depandant table:
SQL>
SQL> drop type t1 FORCE
2 /

Type dropped.

SQL>
SQL>
SQL>
SQL>
SQL> desc dpntnt_table
Name Null? Type
----------------------------------------- -------- ----------------------------
ID1 NUMBER(7)

SQL>
SQL>
SQL>
SQL> --if i re-create it - my table is still corrupted:
SQL>
SQL>
SQL> create or replace type t1 as object (obj_type number(15))
2 /

Type created.

SQL>
SQL>
SQL>
SQL> desc dpntnt_table
Name Null? Type
----------------------------------------- -------- ----------------------------
ID1 NUMBER(7)

SQL>

--if i re-create it - my table is still corrupted:

create or replace type t1 as object (obj_type number(15))
/
desc dpntnt_table
[/code]

1. If i'll do drop type FORCE what will happen to the dependent object(might be a table for example) ?

2. I understand that this type is already assigned to some object, but i can't seem to find out which one.

how do i find out which object is depending on the type i want to create or replace?