Search notes:

ORA-22913: must specify table name for nested table column or attribute

create or replace type tq84_obj  authid definer as object (
   num number,
   txt varchar2(10)
);
/
 
create type tq84_obj_t as table of tq84_obj;
/

The following create table statement throws ORA-22913: must specify table name for nested table column or attribute:

create table tq84_tab (
   tab_id      integer,
   obj_tab     tq84_obj_t
);

This create table statement succeeds because it specifies the required table name for the nested table column:

create table tq84_tab (
   tab_id      integer,
   obj_tab     tq84_obj_t
)
nested table obj_tab store as tq84_nt return as locator;

Cleaning up:

drop table tq84_tab;
drop type tq84_obj_t;
drop type tq84_obj;

See also