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

重启一下crs

问题解决!

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