Oracle Study之--Oracle 11gR2 RAC crs启动故障(CRS-4000)
系统环境：
操作系统：RedHat EL5
Cluster： Oracle 11gR2 Grid
Oracle： Oracle 11gR2
在启动一个node的CRS时出现以下错误，错误现象：
[root@node1 ~]# crsctl start crs
Failure at scls_scr_getval with code 1
Internal Error Information:
Category: -2
Operation: opendir
Location: scrsearch2
Other: cant open scr home dir scls_scr_getval
System Dependent Information: 2
CRS-4000: Command Start failed, or completed with errors.查看错误原因：
1、主机名
[root@node1 node1]# hostname
node1
2、查看hosts文件
[root@node1 node1]# cat /etc/hosts# Do not remove the following line, or various programs# that require network functionality will fail.
127.0.0.1 localhost ::1 localhost6.localdomain6 localhost6 192.168.8.21 wqy1 10.10.10.101 wqy1-priv 192.168.8.23 wqy1-vip 192.168.8.22 wqy2 10.10.10.102 wqy2-priv 192.168.8.24 wqy2-vip 192.168.8.25 rac-scan 192.168.8.26 wqy3 10.10.10.103 wqy3-priv 192.168.8.27 wqy3-vip
从以上可以了解，主机名应该为wqy1，应该是主机名错误，导致CRS启动失败！
3、重新修改主机名
[root@node1 node1]# vi /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=wqy1
[root@node1 node1]# hostname wqy1
4、重新启动CRS service
[root@wqy1 ~]# crsctl start crs
CRS-4123: Oracle High Availability Services has been started.
[root@wqy1 ~]# crsctl check crs
CRS-4638: Oracle High Availability Services is online
CRS-4537: Cluster Ready Services is online
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online
---至此，问题得以解决！
