rac库grid目录权限(6751)导致数据库宕机案例 此方法仅用于紧急救助

问题：

我的rac环境不小心通过chown命令改变了/u01目录及其子目录的权限，导致rac节点2数据库宕掉，sqlplus下打开数据库报错如下：

[oracle@node2 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Fri Mar 25 19:53:58 2016

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to an idle instance.

SQL> startup

ORA-01078: failure in processing system parameters

ORA-01565: error in identifying file '+DATA/orcl/spfileorcl.ora'

ORA-17503: ksfdopn:2 Failed to open file +DATA/orcl/spfileorcl.ora

ORA-12547: TNS:lost contact

解决方法：

1、查看grid用户下/u01/app/11.2.0/grid/bin/oracle文件权限变为-rwxr-x--x，其正常权限应为-rwsr-s--x（6751）。

[oracle@node2 dbs]$ su - grid

Password:

[grid@node2 ~]$ cd /u01/app/11.2.0/grid/bin/

[grid@node2 bin]$ ll oracle

-rwxr-x--x 1 grid oinstall 209914869 Mar 21 18:02 oracle

2、修改/u01/app/11.2.0/grid/bin/oracle文件夹权限

[grid@node2 bin]$ chmod 6751 oracle

[grid@node2 bin]$ ll oracle

-rwsr-s--x 1 grid oinstall 209914869 Mar 21 18:02 oracle

3、查看/u01/app/oracle/product/11.2.0/db_1/bin/oracle目录权限，没有问题

[oracle@node2 ~]$ ll /u01/app/oracle/product/11.2.0/db_1/bin/oracle

-rwsr-s--x 1 oracle asmadmin 239627031 Mar 22 09:27 /u01/app/oracle/product/11.2.0/db_1/bin/oracle

4、重启数据库

SQL> startup

ORACLE instance started.

Total System Global Area 2505338880 bytes

Fixed Size 2255832 bytes

Variable Size 805307432 bytes

Database Buffers 1677721600 bytes

Redo Buffers 20054016 bytes

Database mounted.

Database opened.

5、查看node1节点/u01/app/11.2.0/grid/bin/oracle文件权限

[grid@node1 bin]$ pwd

/u01/app/11.2.0/grid/bin

[grid@node1 bin]$ ll oracle

-rwxr-x--x 1 grid oinstall 209914869 Mar 21 18:01 oracle

[grid@node1 bin]$ chmod 6751 oracle

[grid@node1 bin]$ ll oracle

-rwsr-s--x 1 grid oinstall 209914869 Mar 21 18:01 oracle

6、查看/u01/app/oracle/product/11.2.0/db_1/bin/oracle

[oracle@node1 bin]$ pwd

/u01/app/oracle/product/11.2.0/db_1/bin

[oracle@node1 bin]$ ll oracle

-rwsr-s--x 1 oracle asmadmin 239627031 Mar 22 09:24 oracle

7、查看crs资源

[grid@node2 ~]$ crsctl status resource -t

--------------------------------------------------------------------------------

NAME TARGET STATE SERVER STATE_DETAILS

--------------------------------------------------------------------------------

Local Resources

--------------------------------------------------------------------------------

ora.DATA.dg

ONLINE ONLINE node1

ONLINE ONLINE node2

ora.FLASH.dg

ONLINE ONLINE node1

ONLINE ONLINE node2

ora.GRIDDG.dg

ONLINE ONLINE node1

ONLINE ONLINE node2

ora.LISTENER.lsnr

ONLINE ONLINE node1

ONLINE ONLINE node2

ora.asm

ONLINE ONLINE node1 Started

ONLINE ONLINE node2 Started

ora.gsd

OFFLINE OFFLINE node1

OFFLINE OFFLINE node2

ora.net1.network

ONLINE ONLINE node1

ONLINE ONLINE node2

ora.ons

ONLINE ONLINE node1

ONLINE ONLINE node2

ora.registry.acfs

ONLINE ONLINE node1

ONLINE ONLINE node2

--------------------------------------------------------------------------------

Cluster Resources

--------------------------------------------------------------------------------

ora.LISTENER_SCAN1.lsnr

1 ONLINE ONLINE node1

ora.cvu

1 ONLINE ONLINE node1

ora.node1.vip

1 ONLINE ONLINE node1

ora.node2.vip

1 ONLINE ONLINE node2

ora.oc4j

1 ONLINE ONLINE node1

ora.orcl.db

1 ONLINE ONLINE node1 Open

2 ONLINE ONLINE node2 Open

ora.scan1.vip

1 ONLINE ONLINE node1

参考：

http://www.lunar2013.com/2014/10/11-2-rac-%E4%BF%AE%E6%94%B9%E4%BA%86%E7%9B%AE%E5%BD%95%E6%9D%83%E9%99%90u01%E5%90%8Ecrs%E4%B8%8D%E8%83%BD%E5%90%AF%E5%8A%A8%E7%9A%84%E8%A7%A3%E5%86%B3%E6%96%B9%E6%B3%95-1-%E6%89%8B%E5%B7%A5%E4%BF%AE-2.html