Oracle SQL Plan operation: LOAD TABLE CONVENTIONAL

create table tq84_t (
   id  number,
   val varchar2(20)
);


explain plan for
   insert into tq84_t values(42, 'forty-two');

select * from table(dbms_xplan.display(format => 'basic'));
--
-- -------------------------------------------
-- | Id  | Operation                | Name   |
-- -------------------------------------------
-- |   0 | INSERT STATEMENT         |        |
-- |   1 |  LOAD TABLE CONVENTIONAL | TQ84_T |
-- -------------------------------------------

explain plan for
   insert   into tq84_t
   select * from tq84_t;

select * from dbms_xplan.display(format=>'basic');
-- -------------------------------------------
-- | Id  | Operation                | Name   |
-- -------------------------------------------
-- |   0 | INSERT STATEMENT         |        |
-- |   1 |  LOAD TABLE CONVENTIONAL | TQ84_T |
-- |   2 |   TABLE ACCESS FULL      | TQ84_T |
-- -------------------------------------------

drop table   tq84_t;