版权声明: https://blog.csdn.net/dream_broken/article/details/31783267
--查询表空间的总容量
select tablespace_name 表空间名称, sum(bytes) / 1024 / 1024 表空间总容量MB
from dba_data_files
group by tablespace_name;
--查询表空间使用率
select
total.tablespace_name 表空间名称,
round(total.MB, 2) 总容量MB,
round(total.MB - free.MB, 2) 已使用M,
round((1 - free.MB / total.MB) * 100, 2) || '%' 使用率
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;
--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;
原文:https://blog.csdn.net/dream_broken/article/details/31783267