1节点2

使用dbca删除一个节点

2节点1

alter database disable thread 2;

3节点1

验证是否已经删除一个节点数据库

[03:49:06 oracle(db)@rac1 ~]$ srvctl config database -d prod

Database unique name: prod

Database name: prod

Oracle home: /u01/app/oracle/product/11.2.0/db

Oracle user: oracle

Spfile: +DATA/prod/spfileprod.ora

Domain:

Start options: open

Stop options: immediate

Database role: PRIMARY

Management policy: AUTOMATIC

Server pools: prod

Database instances: prod1

Disk Groups: DATA

Mount point paths:

Services:

Type: RAC

Database is administrator managed

4 节点1

停止节点2的监听

srvctl disable listener -l LISTENER -n rac2;

srvctl stop listener -l LISTENER -n rac2;

5节点2

更新节点信息

/u01/app/oracle/product/11.2.0/db/oui/bin/runInstaller -updateNodeList ORACLE_HOME=/u01/app/oracle/product/11.2.0/db "CLUSTER_NODES={rac2}" -local

6节点2

删除节点2的ORACLE软件

/u01/app/oracle/product/11.2.0/db/deinstall/deinstall -local

7节点1

更新剩余节点的信息

/u01/app/oracle/product/11.2.0/db/oui/bin/runInstaller -updateNodeList ORACLE_HOME=/u01/app/oracle/product/11.2.0/db "CLUSTER_NODES={rac1}"

删除oracle软件已经完成

下面来删除grid软件

8节点1

查看ons的资源情况

olsnodes -s -t

rac1 Active Unpinned

rac2 Active Unpinned

9节点2

以root用户执行rootcrs.pl 脚本清楚grid的配置信息

/u01/app/11.2.0/grid/crs/install/rootcrs.pl -deconfig -deinstall -force

10节点1

再次确认ons的资源情况

olsnodes -s -t

rac1 Active Unpinned

rac2 Inactive Unpinned

11节点1

root用户执行

删除另外一个节点的信息

crsctl delete node -n rac2

olsnodes -s -t

rac1 Active Unpinned

12节点2

oracle用户执行

/u01/app/11.2.0/grid/oui/bin/runInstaller -updateNodeList ORACLE_HOME=/u01/app/11.2.0/grid/ "CLUSTER_NODES=rac2" CRS=TRUE -silent -local

13节点2

卸载grid软件

oracle用户执行

/u01/app/11.2.0/grid/deinstall/deinstall -local

root 用户下执行

rm -rf /etc/oraInst.loc

rm -rf /opt/ORCLfmap

rm -rf /etc/oratab

14节点1

更新剩余节点的信息

oracle用户执行：

/u01/app/11.2.0/grid/oui/bin/runInstaller -updateNodeList ORACLE_HOME=/u01/app/11.2.0/grid/ "CLUSTER_NODES=rac1" CRS=TRUE -silent

15 节点1

检查是否已经删除

[04:24:28 oracle(db)@rac1 ~]$ cluvfy stage -post nodedel -n rac2 -verbose

Performing post-checks for node removal

Checking CRS integrity...

Clusterware version consistency passed

The Oracle Clusterware is healthy on node "rac1"

CRS integrity check passed

Result:

Node removal check passed

Post-check for node removal was successful.

可以看到节点删除成功

原文：http://blog.csdn.net/kiwi_kid/article/details/44110989