将文件传到此目录下，修改文件用户属主：oracle
/opt/ora11g/linux_x86_11gR1_clusterware.zip
unzip linux_x86_11gR1_clusterware.zip

解压的目录下有runcluvfy.sh(需要使用绝对路径）
su - oracle
/opt/ora11g/clusterware/runcluvfy.sh stage -pre crsinst -n rac1,rac2 -verbose

检查发现swap 需要1.5G 目前1.47G 增加SWAP:(102M）

su - root
dd if=/dev/zero of=/home/swap bs=1024 count=100000

mkswap /home/swap

swapon /home/swap

free -m

oracle11g 内存竟然需要1G，swap 需要1.5G.还有各种补丁，全部打上！
如果缺少，就在CD/ROM 上挂上光盘，或者网上下载！
这里也是第一次，全部 “yes/passed”以前，总会遇到几个“FAILED”

[oracle@rac1 ~]$ /opt/ora11g/clusterware/runcluvfy.sh stage -pre crsinst -n rac1,rac2 -verbose

Performing pre-checks for cluster services setup

Checking node reachability...

Check: Node reachability from node "rac1"
Destination Node Reachable?
------------------------------------ ------------------------
rac2 yes
rac1 yes
Result: Node reachability check passed from node "rac1".

Checking user equivalence...

Check: User equivalence for user "oracle"
Node Name Comment
------------------------------------ ------------------------
rac2 passed
rac1 passed
Result: User equivalence check passed for user "oracle".

Checking administrative privileges...

Check: Existence of user "oracle"
Node Name User Exists Comment
------------ ------------------------ ------------------------
rac2 yes passed
rac1 yes passed
Result: User existence check passed for "oracle".

Check: Existence of group "oinstall"
Node Name Status Group ID
------------ ------------------------ ------------------------
rac2 exists 501
rac1 exists 501
Result: Group existence check passed for "oinstall".

Check: Membership of user "oracle" in group "oinstall" [as Primary]
Node Name User Exists Group Exists User in Group Primary Comment
---------------- ------------ ------------ ------------ ------------ ------------
rac2 yes yes yes yes passed
rac1 yes yes yes yes passed
Result: Membership check for user "oracle" in group "oinstall" [as Primary] passed.

Administrative privileges check passed.

Checking node connectivity...

Interface information for node "rac2"
Interface Name IP Address Subnet Subnet Gateway Default Gateway Hardware Address
---------------- ------------ ------------ ------------ ------------ ------------
eth0 192.168.100.102 192.168.100.0 0.0.0.0 10.85.132.1 00:0C:29:2A:8F:53
eth1 10.10.17.222 10.10.17.0 0.0.0.0 10.85.132.1 00:0C:29:2A:8F:5D
virbr0 192.168.122.1 192.168.122.0 0.0.0.0 10.85.132.1 00:00:00:00:00:00
eth2 10.85.132.230 10.85.132.0 0.0.0.0 10.85.132.1 00:0C:29:2A:8F:67

Interface information for node "rac1"
Interface Name IP Address Subnet Subnet Gateway Default Gateway Hardware Address
---------------- ------------ ------------ ------------ ------------ ------------
eth0 192.168.100.101 192.168.100.0 0.0.0.0 10.85.132.1 00:0C:29:B9:3C:C7
eth1 10.10.17.221 10.10.17.0 0.0.0.0 10.85.132.1 00:0C:29:B9:3C:D1
virbr0 192.168.122.1 192.168.122.0 0.0.0.0 10.85.132.1 00:00:00:00:00:00
eth2 10.85.132.247 10.85.132.0 0.0.0.0 10.85.132.1 00:0C:29:B9:3C:DB

Check: Node connectivity of subnet "192.168.100.0"
Source Destination Connected?
------------------------------ ------------------------------ ----------------
rac2:eth0 rac1:eth0 yes
Result: Node connectivity check passed for subnet "192.168.100.0" with node(s) rac2,rac1.

Check: Node connectivity of subnet "10.10.17.0"
Source Destination Connected?
------------------------------ ------------------------------ ----------------