查看表空间使用情况

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)",
round((d.Tot_grootte_Mb - f.total_bytes) / d.Tot_grootte_Mb * 100,2) "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 4 DESC