oracle查询表空间

----临时表空间
SELECT a.tablespace_name "表空间名",
       total "表空间大小",
       total - used "表空间剩余大小",
       used "表空间使用大小",
       ROUND(used / total, 4) * 100 "使用率 %"
  FROM (SELECT tablespace_name, SUM(bytes_used) used
          FROM v$temp_space_header
         GROUP BY tablespace_name) a,
       (SELECT tablespace_name, SUM(bytes) total
          FROM dba_temp_files
         GROUP BY tablespace_name) b
WHERE a.tablespace_name = b.tablespace_name

----查看表空间
SELECT a.tablespace_name "表空间名",      
total / 1024 / 1024 "表空间大小",      
free / 1024 / 1024 "表空间剩余大小",     
(total - free) / 1024 / 1024 "表空间使用大小",     
  ROUND((total - free) / total, 4) * 100 "使用率 %" 
  FROM (SELECT tablespace_name, SUM(bytes) free     
      FROM DBA_FREE_SPACE         GROUP BY tablespace_name) a,   
         (SELECT tablespace_name, SUM(bytes) total      
            FROM DBA_DATA_FILES      
              GROUP BY tablespace_name) b WHERE a.tablespace_name = b.tablespace_name



---创建临时表空间组
create temporary tablespace tempsum1 TEMPFILE '/dosp/data02/tablespace/tempsum1.dbf' SIZE 20G tablespace group tempsum;
create temporary tablespace tempsum2 TEMPFILE '/dosp/data02/tablespace/tempsum2.dbf' SIZE 20G tablespace group tempsum;


----产看每个用户占了多少表空间
select owner,tablespace_name,sum(bytes)/1024/1024MB
    from dba_segments  group by owner,tablespace_name