查看Oracle表空间使用情况SQL语句

 select f.tablespace_name,a.total,u.used,f.free,round((u.used/a.total)*100) "% used", round((f.free/a.total)*100) "% Free" from (select tablespace_name, sum(bytes/(1024*1024)) total from dba_data_files group by tablespace_name) a, (select tablespace_name, round(sum(bytes/(1024*1024))) used from dba_extents group by tablespace_name) u, (select tablespace_name, round(sum(bytes/(1024*1024))) free from dba_free_space group by tablespace_name) f WHERE a.tablespace_name = f.tablespace_name and a.tablespace_name = u.tablespace_name;