create table my_objects as select * from all_objects;
commit;
select count(*) from my_objects;


  COUNT(*)
----------
      8587


delete from my_objects;
8587 rows deleted.


exit


再次登录,
select count(*) from my_objects;
  COUNT(*)
----------

         0


说明:

正常退出sqlplus(如用exit),会执行commit;

异常退出sqlplus(如用alter system kill session 'sid,serial#'),会执行rollback。

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