转：表空间

--修改表空间
alter user admin default tablespace admin_tablespace;
--查看表空间
Select *
FROM 
      (select username,default_tablespace from dba_users) ut,
      (select 
      --b.file_id 文件ID号, 
      b.tablespace_name 表空间名, 
      b.bytes/1024/1024||'M'字节数, 
      (b.bytes-sum(nvl(a.bytes,0)))/1024/1024||'M' 已使用, 
      sum(nvl(a.bytes,0))/1024/1024||'M' 剩余空间, 
      100 - sum(nvl(a.bytes,0))/(b.bytes)*100 占用百分比 
      from dba_free_space a,dba_data_files b 
      where a.file_id=b.file_id 
      group by b.tablespace_name,b.file_id,b.bytes 
      order by b.file_id ) tsu
Where ut.default_tablespace = tsu.表空间名
orDER BY ut.username