标签：Permission dd disks failed grid data04 open
问题描述：grid用户使用dd命令报错dd: failed to open ‘data04.dd’: Permission denied，如下所示
[grid@hisdb1 disks]$ dd if=/dev/oracleasm/disks/DATA04 of=data04.dd bs=8192 count=1
dd: failed to open ‘data04.dd’: Permission denied
异常原因：
grid用户在/dev/oracleasm/disks/目录权限不够，所以造成无法备份到data04.dd
解决方案：
只需更换到grid家目录就行.
[grid@hisdb1 disks]$ dd if=/dev/oracleasm/disks/DATA04 of=/home/grid/data04.dd bs=8192 count=1
1+0 records in
1+0 records out
8192 bytes (8.2 kB) copied, 0.000340858 s, 24.0 MB/s
标签：Permission,
dd,
disks,
failed,
grid,
data04,
open
From： https://blog.51cto.com/u_12991611/5989268