有什么方法可以找出一个表空间中剩余多少可用空间？
经过一些研究(我不是一个DBA)，我尝试以下：
select max_bytes-bytes from user_ts_quotas; select sum(nvl(bytes,0)) from user_free_space;
但这些查询返回完全不同的结果。
column "Tablespace" format a13
column "Used MB" format 99,999,999
column "Free MB" format 99,999
column "Total MB" format 99,999
select
fs.tablespace_name "Tablespace",(df.totalspace - fs.freespace) "Used MB",fs.freespace "Free MB",df.totalspace "Total MB",round(100 * (fs.freespace / df.totalspace)) "Pct. Free"
from
(select
tablespace_name,round(sum(bytes) / 1048576) TotalSpace
from
dba_data_files
group by
tablespace_name
) df,(select
tablespace_name,round(sum(bytes) / 1048576) FreeSpace
from
dba_free_space
group by
tablespace_name
) fs
where
df.tablespace_name = fs.tablespace_name;
