ORA-15025: could not open disk "/dev/asm***"

Symptoms:

打完补丁后，数据库报错ORA-15025，数据库无法启动.

alert日志信息：

Wed Jul22 16:26:57 2015

ORA-15025:could not open disk "/dev/12casm-diskb"

ORA-27041:unable to open file

Linux-x86_64Error: 13: Permission denied

Additionalinformation: 9

ORA-15040:diskgroup is incomplete

ORA-15040:diskgroup is incomplete

ORA-15040:diskgroup is incomplete

ORA-15040:diskgroup is incomplete

Wed Jul22 16:26:57 2015

ORA-15025:could not open disk "/dev/12casm-diskc"

ORA-27041:unable to open file

Linux-x86_64Error: 13: Permission denied

Additionalinformation: 9

Wed Jul22 16:26:57 2015

ORA-15025:could not open disk "/dev/12casm-diskd"

ORA-27041:unable to open file

Linux-x86_64Error: 13: Permission denied

Additionalinformation: 9

Wed Jul22 16:26:57 2015

ORA-15025:could not open disk "/dev/12casm-diske"

ORA-27041:unable to open file

Linux-x86_64Error: 13: Permission denied

Additionalinformation: 9

NOTE:Disk 0 in group 1 could not be opened.

WARNING:Failed to complete group 1

WARNING:group 1 is being dismounted.

WARNING:ASMB force dismounting group 1 (DATA) due to failed mount

SUCCESS:diskgroup DATA was dismounted

按理来说asm的磁盘文件用户和组为grid:asmadmin，oracle用户是没有权限访问的，因为oracle不属于asmadmin。

那为什么打补丁之前能够访问呢？

 

Cause：

经研究发现，这跟$ORACLE_HOME/bin/oracle这个文件的属性有关系：

在安装oracle soft之后：

$ORACLE_HOME/bin/oracle文件属性权限为oracle:oninstall 751(-rwxr-x--x)

在用安装ASM建库(DBCA)时：

此文件属性会自动被修改为oracle:asmadmin6751(-rwsr-s--x)

在PSU apply之后：

此文件属性又被自动被修改为oracle:oinstall751(-rwxr-x--x)

 

Solution:

chown oracle:asmadmin $ORACLE_HOME/bin/oracle

chmod 6751 $ORACLE_HOME/bin/oracle

问题解决！