查看表空间大小

 

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