ORACLE数据库存储空间使用情况查询

使用系统sys或者dba权限的账户创建视图如下:

1. 主要从数据库的表dba_data_files,dba_segments两张表中获取。
2. 默认数据库保存的是byte单位，转换关系如下:
1024bytes = 1kb
1024KB = 1M
1024M = 1G

CREATE OR REPLACE VIEW V_GET_DISKSPACE AS

SELECT A.TABLESPACE_NAME,

A.USE "USED (MB)",

(B.TOTAL-A.USE) "FREE (MB)",

B.TOTAL "TOTAL (MB)",

round((B.TOTAL-A.USE)/B.TOTAL,5)*100||'%' "PER_FREE"

FROM

(

select TABLESPACE_NAME,sum(bytes)/(1024*1024) as USE from dba_segments

/*where tablespace_name NOT IN ('USERS','SYSAUX','UNDOTBS1','SYSTEM','UNDOTBS2')*/

GROUP BY TABLESPACE_NAME

) A ,

(

WITH TABLESPACE_TOTAL AS

(

SELECT tablespace_name,sum(MAXBYTES)/(1024*1024) TOTAL FROM DBA_DATA_FILES T

WHERE /*T.TABLESPACE_NAME NOT IN ('USERS','SYSAUX','UNDOTBS1','SYSTEM','UNDOTBS2')

AND*/ T.AUTOEXTENSIBLE='YES' group by tablespace_name

UNION ALL

SELECT tablespace_name,sum(bytes) TOTAL FROM DBA_DATA_FILES T

WHERE /*T.TABLESPACE_NAME NOT IN ('USERS','SYSAUX','UNDOTBS1','SYSTEM','UNDOTBS2')

AND*/ T.AUTOEXTENSIBLE='NO' group by tablespace_name

)

SELECT TABLESPACE_NAME,SUM(TOTAL) TOTAL FROM TABLESPACE_TOTAL GROUP BY TABLESPACE_NAME

) B

WHERE A.TABLESPACE_NAME=B.TABLESPACE_NAME;

LINUX服务器查询

1. du -sch * 使用该命令查询当前目录下文件夹占用的空间的情况

2. df -hl 查询磁盘剩余空间