查表空间

select b.file_id  文件ID,
         b.tablespace_name  表空间,
         b.file_name     物理文件名,
         b.bytes       总字节数,
         (b.bytes - sum(nvl(a.bytes, 0)))    已使用,
         sum(nvl(a.bytes, 0))         剩余,
         sum(nvl(a.bytes, 0)) / (b.bytes) * 100 剩余百分比  from dba_free_space a,
       dba_data_files b  where a.file_id = b.file_id  group by b.tablespace_name,
       b.file_name,
       b.file_id,
       b.bytes  order by b.tablespace_name

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转载自hollowinheart.iteye.com/blog/1849703