简单描述一下，在Oracle 10203 for Solaris sparc的RAC双节点环境中，新增一个节点的过程。共享存储已经在第三个节点上配置完成，这里主要介绍操作系统上和Oracle上的配置。
这一篇描述CLUSTER软件的建立。
在新增节点racnode3上将共享存储上的裸设备授权给Oracle用户：
bash-3.00# chown oracle:oinstall /dev/rdsk/c1t500601603022E66Ad*
建立和节点1、节点2上一致的/dev/rac/vot和/dev/rac/ocr链接，执行相同的裸设备文件：
bash-3.00# mkdir /dev/rac
bash-3.00# ln -s /dev/rdsk/c1t500601603022E66Ad2s1 /dev/rac/ocr
bash-3.00# ln -s /dev/rdsk/c1t500601603022E66Ad2s3 /dev/rac/vot
在安装节点执行$ORA_CLS_HOME/out/bin/addNode.sh来启动图形化界面添加新的节点：
bash-2.03$ ./addNode.sh
Starting Oracle Universal Installer...
Checking installer requirements...
Checking operating system version: must be 5.8, 5.9 or 5.10. Actual 5.8
Passed
Checking Temp space: must be greater than 150 MB. Actual 8715 MB Passed
Checking monitor: must be configured to display at least 256 colors. Actual 16777216 Passed
All installer requirements met.
Oracle Universal Installer, Version 10.2.0.1.0 Production
Copyright (C) 1999, 2005, Oracle. All rights reserved.
在图形界面中，填入新增节点的PUBLIC、PRIVATE和VIP对应的名称。
安装过程Oracle跳过了一些远端执行碰到的错误，需要手工更正，在racnode3上执行下面的脚本：
bash-3.00$ /data/oracle/product/10.2/crs/oui/bin/runInstaller -attachHome -noClusterEnabled ORACLE_HOME=/data/oracle/product/10.2/crs ORACLE_HOME_NAME=OraCrs10g_home1 CLUSTER_NODES=racnode1,racnode2,racnode3 CRS=true "INVENTORY_LOCATION=/data/oracle/oraInventory" LOCAL_NODE=racnode3
Starting Oracle Universal Installer...
Checking installer requirements...
Checking operating system version: must be 5.8, 5.9 or 5.10. Actual 5.10
Passed
Checking Temp space: must be greater than 250 MB. Actual 10167 MB Passed
Checking swap space: must be greater than 500 MB. Actual 7415 MB Passed
All installer requirements met.
'AttachHome' was successful.
在节点2上执行下面的脚本：
bash-2.03$ /data/oracle/product/10.2/crs/oui/bin/runInstaller -updateNodeList -noClusterEnabled ORACLE_HOME=/data/oracle/product/10.2/crs CLUSTER_NODES=racnode1,racnode2,racnode3 CRS=true "INVENTROY_LOCATION=/data/oracle/oraInventory" LOCAL_NODE=racnode2
Starting Oracle Universal Installer...
Checking installer requirements...
Checking operating system version: must be 5.8, 5.9 or 5.10. Actual 5.8
Passed
Checking Temp space: must be greater than 150 MB. Actual 8233 MB Passed
Checking monitor: must be configured to display at least 256 colors. Actual 16777216 Passed
All installer requirements met.
'UpdateNodeList' was successful.
节点3上运行类似的脚本：
bash-3.00$ /data/oracle/product/10.2/crs/oui/bin/runInstaller -updateNodeList -noClusterEnabled ORACLE_HOME=/data/oracle/product/10.2/crs CLUSTER_NODES=racnode1,racnode2,racnode3 CRS=true "INVENTROY_LOCATION=/data/oracle/oraInventory" LOCAL_NODE=racnode3
Starting Oracle Universal Installer...
Checking installer requirements...
Checking operating system version: must be 5.8, 5.9 or 5.10. Actual 5.10
Passed
Checking Temp space: must be greater than 250 MB. Actual 10167 MB Passed
Checking swap space: must be greater than 500 MB. Actual 7415 MB Passed
Checking monitor: must be configured to display at least 256 colors. Actual 16777216 Passed
All installer requirements met.
'UpdateNodeList' was successful.
随后需要依次执行下面的脚本：
1.节点3上的/data/oracle/oraInventory/orainstRoot.sh：
bash-3.00# ./data/oracle/oraInventory/orainstRoot.sh
Creating the Oracle inventory pointer file (/var/opt/oracle/oraInst.loc)
Changing permissions of /data/oracle/oraInventory to 770.
Changing groupname of /data/oracle/oraInventory to oinstall.
The execution of the script. is complete
2.节点1上的/data/oracle/product/10.2/crs/install/rootaddnode.sh：
# ./data/oracle/product/10.2/crs/install/rootaddnode.sh
clscfg: EXISTING configuration version 3 detected.
clscfg: version 3 is10GRelease 2.
Attempting to add 1 new nodes to the configuration
Using ports: CSS=49895 CRS=49896 EVMC=49898 and EVMR=49897.
node <nodenumber>: <nodename> <private interconnect name> <hostname>
node 3: racnode3 racnode3-priv racnode3
Creating OCR keys for user 'root', privgrp 'other'..
Operation successful.
/data/oracle/product/10.2/crs/bin/srvctl add nodeapps -n racnode3 -A racnode3-vip/255.255.255.0/ce0 -o /data/oracle/product/10.2/crs
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