【文件属性】：
文件名称：oracle查询表空间大小
文件大小：49KB
文件格式：PPTX
更新时间：2017-06-01 13:25:19
oracle 表空间
sqlplus ecifpub/ecifpub@ECIFDB
select a.TABLESPACE_NAME "TableSpace Name",
round(a.BYTES / 1024 / 1024) "MB Allocated",
round((a.BYTES-nvl(b.BYTES, 0)) / 1024 / 1024) "MB Used",
nvl(round(b.BYTES / 1024 / 1024), 0) "MB Free",
round(((a.BYTES-nvl(b.BYTES, 0))/a.BYTES)*100,2) "Pct Used",
round((1-((a.BYTES-nvl(b.BYTES,0))/a.BYTES))*100,2) "Pct Free"
from (select TABLESPACE_NAME,
sum(BYTES) BYTES
from sys.dba_data_files
group by TABLESPACE_NAME) a,
(select TABLESPACE_NAME,
sum(BYTES) BYTES
from sys.dba_free_space
group by TABLESPACE_NAME) b
where a.TABLESPACE_NAME = b.TABLESPACE_NAME (+)
order by ((a.BYTES-b.BYTES)/a.BYTES) desc;
quit
!