至此，GI添加已经完成。

2.4 添加RAC节点

2.4 If you have an Oracle RAC or Oracle RAC One Node database configured on the cluster and you have a local Oracle home, then do the following to extend the Oracle database home to node3:
 Navigate to the Oracle_home/oui/bin directory on node1 and run the addNode.sh script as the user that installed Oracle RAC using the following syntax:
 $ ./addNode.sh "CLUSTER_NEW_NODES={node3}"
 Run the Oracle_home/root.sh script on node3 as root, where Oracle_home is the Oracle RAC home.

实际执行：
[root@jystdrac2 app]# ls -ld /opt/app
drwxr-xr-x. 6 root oinstall 4096 Jun  4 13:34 /opt/app
[root@jystdrac2 app]# mkdir -p /opt/app/oracle
[root@jystdrac2 app]# chown oracle:oinstall /opt/app/oracle/
[root@jystdrac2 app]# ls -ld /opt/app/oracle/
drwxr-xr-x 2 oracle oinstall 4096 Jun  4 14:25 /opt/app/oracle/

--添加RAC节点：
cd $ORACLE_HOME/oui/bin
./addNode.sh "CLUSTER_NEW_NODES={jystdrac2}"

然后按提示执行root脚本。

2.5 执行root.sh脚本

2.5 Run the Grid_home/root.sh script on the node3 as root and run the subsequent script, as instructed.

2.6 验证集群完整性

2.6 cluvfy stage -post nodeadd -n node3 [-verbose]
 Check whether either a policy-managed or administrator-managed Oracle RAC database is configured to run on node3 (the newly added node). If you configured an administrator-managed Oracle RAC database, you may need to use DBCA to add an instance to the database to run on this newly added node.
cluvfy stage -post nodeadd -n jystdrac2 -verbose

3.其他配置工作

此时需要将单节点RAC修改为两节点RAC，可以按照官方文档说的直接使用dbca，也可以手工来配置。
 如果此时直接尝试启动新加节点的实例，会报错：
[oracle@jystdrac2 ~]$ srvctl add instance -d ractest -i ractest2