在ASM中：查询所有磁盘名称、总大小、剩余大小：单位MB
—–查看组的信息(总大小)
select name,total_mb, free_mb from v$asm_diskgroup;
—查看磁盘成员信息分别大小
select name,total_mb,free_mb from v$asm_disk;
或者：
[oracle@racdb1]asmcmd
ASMCMD>lsdg
查询表空间数据文件路径和总大小：单位MB
SELECT tablespace_name,
file_id,
file_name,
round(bytes / (1024 * 1024), 0) total_space
FROM dba_data_files
ORDER BY tablespace_name;
查询表空间已使用、剩余、使用百分比：单位GB
SELECT a.tablespace_name,
b.size_GB,
a.free_GB,
round((a.free_GB/b.size_GB) * 100) “FREE_%”
FROM (SELECT tablespace_name,
round(Sum(bytes)*10/1024/1024/1024)/10 free_GB
FROM
dba_free_space
GROUP BY tablespace_name) a,
(SELECT tablespace_name,
round(Sum(bytes)*10/1024/1024/1024)/10 size_GB
FROM