oracle表空间使用情况查询语句

--查询表空间使用情况
select upper(f.tablespace_name) "表空间名",
d.tot_grootte_mb "表空间大小(m)",
d.tot_grootte_mb - f.total_bytes "已使用空间(m)",
to_char(round((d.tot_grootte_mb - f.total_bytes) / d.tot_grootte_mb * 100,2),'990.99') || '%' "使用比",
f.total_bytes "空闲空间(m)",
f.max_bytes "最大块(m)"
from (select tablespace_name,
round(sum(bytes) / (1024 * 1024), 2) total_bytes,
round(max(bytes) / (1024 * 1024), 2) max_bytes
from sys.dba_free_space
group by tablespace_name) f,
(select dd.tablespace_name,
 round(sum(dd.bytes) / (1024 * 1024), 2) tot_grootte_mb
from sys.dba_data_files dd
group by dd.tablespace_name) d
where d.tablespace_name = f.tablespace_name
order by 1

--查询表空间的free space
select tablespace_name,
count(*) as extends,
round(sum(bytes) / 1024 / 1024, 2) as mb,
sum(blocks) as blocks
from dba_free_space
group by tablespace_name;

--查询表空间的总容量
select tablespace_name, sum(bytes) / 1024 / 1024 as mb
from dba_data_files
group by tablespace_name;

--查询表空间使用率
select total.tablespace_name,
round(total.mb, 2) as total_mb,
round(total.mb - free.mb, 2) as used_mb,
round((1 - free.mb / total.mb) * 100, 2) || '%' as used_pct
from (select tablespace_name, sum(bytes) / 1024 / 1024 as mb
from dba_free_space
group by tablespace_name) free,
(select tablespace_name, sum(bytes) / 1024 / 1024 as mb
from dba_data_files
group by tablespace_name) total
where free.tablespace_name = total.tablespace_name;