11gr2安装Grid 时 node2 root.sh失败Start of resource “ora.asm -init” failed

Start of resource “ora.asm -init” failed
Failed to start ASM
Failed to start Oracle Clusterware stack

11gr2安装Grid 时 ins-40719 ins-40912

ins-40719 ipaddress configured for single client access name(scan):
rac-scan.anbob.com is already assigned to another system

RAC那些事,概念

rac 全名Real Application Clusters,是ORACLE DATABASE 上的一个组件, 用共享存储的结构可以把1个数据库运行在多个分别计算的节点instance中 ,来提高了数据库的可用性,可以安装在企业版或标准版中,rac 出生于2001年的9I release 1, 以它的前身是oracle parallel server,rac 引入cache fusion机制提高实例间的资源同步。