big_table练习数据表

create table big_table
as
select rownum id, a.*
  from all_objects a
 where 1=0
/
alter table big_table nologging;

declare
    l_cnt number;
    l_rows number := &1;
begin
    insert /*+ append */
    into big_table
    select rownum, a.*
      from all_objects a
     where rownum <= &1;

    l_cnt := sql%rowcount;

    commit;

    while (l_cnt < l_rows)
    loop
        insert /*+ APPEND */ into big_table
        select rownum+l_cnt,
               OWNER, OBJECT_NAME, SUBOBJECT_NAME, OBJECT_ID, DATA_OBJECT_ID,
               OBJECT_TYPE, CREATED, LAST_DDL_TIME, TIMESTAMP, STATUS,
               TEMPORARY, GENERATED, SECONDARY, NAMESPACE, EDITION_NAME
          from big_table
         where rownum <= l_rows-l_cnt;
        l_cnt := l_cnt + sql%rowcount;
        commit;
    end loop;
end;
/

一般记录条数在1到400万之间。