oracle的recycle功能

转自 http://topic.csdn.net/u/20100602/19/5e8f6bb9-f619-4cb4-a8ca-3e61323ed433.html

1.show parameter recycle

2.关闭回收
alter system set recyclebin=off (默认on)
alter session set recyclebin=off

3.查看回收show recycle;
select original_name,object_name from recyclebin;//查名字
select * from "BIN$RWXQQcTPRde0ws4h9ewJcg==$0";

4.清空
purge tablespace tablespace_name (user user_name);
purge recyclebin; --当前用户的
purge dba_recyclebin --所有(dba权限)
drop table name purge;(不能flashback恢复)
purge index recycle_bin_object_name;(释放其索引--缓解空间压力的折中方案)