Oracle查看表空间容量

select /*+ no_merge */
al.tablespace_name,
round(al.currsizemb) currsizemb,
round(al.maxsizemb) maxsizemb,
round(nvl(free.freesizemb, 0)) freesizemb,
round((1 - (nvl(free.freesizemb, 0) + al.maxsizemb - al.currsizemb) /
al.maxsizemb) * 100,
2) usedpct
from (select /*+ no_merge */
t.tablespace_name,
sum(f.bytes) / 1024 / 1024 currsizemb,
sum(case
when f.autoextensible = 'YES' and f.bytes > f.maxbytes then
f.bytes
when f.autoextensible = 'YES' and f.bytes <= f.maxbytes then
f.maxbytes
else
f.bytes
end) / 1024 / 1024 maxsizemb
from dba_tablespaces t, dba_data_files f
where t.tablespace_name = f.tablespace_name
and t.contents = 'PERMANENT'
group by t.tablespace_name) al,
(select tablespace_name, sum(bytes) / 1024 / 1024 freesizemb
from dba_free_space
group by tablespace_name) free
where al.tablespace_name = free.tablespace_name(+);