b.tablespace_name 表空間名,
b.bytes 位元絤數,
(b.bytes-sum(nvl(a.bytes,0))) 已使用,
sum(nvl(a.bytes,0)) 剩餹空間,
sum(nvl(a.bytes,0))/(b.bytes)*100 剩餹百分比
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
b.tablespace_name 表空間名,
b.bytes 位元絤數,
(b.bytes-sum(nvl(a.bytes,0))) 已使用,
sum(nvl(a.bytes,0)) 剩餹空間,
sum(nvl(a.bytes,0))/(b.bytes)*100 剩餹百分比
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