環境：

OS：OEL5.6

RAC：10.2.0.1.0

眼下有rac1。rac2。rac3三個節點，下面是刪除rac3節點的具體過程

1.刪除rac3節點上的數據庫實例

[[email protected] ~]$ dbca -silent -deleteInstance -gdbName RACDB -instanceName RACDB3 -sysDBAUserName sys -sysDBAPassword oracle

Deleting instance

20% complete

21% complete

22% complete

26% complete

33% complete

40% complete

46% complete

53% complete

60% complete

66% complete

Completing instance management.

70% complete

73% complete

76% complete

80% complete

100% complete

Look at the log file "/u01/app/oracle/product/10.2.0/db_2/cfgtoollogs/dbca/RACDB.log" for further details.

2.刪除rac3節點上的

[[email protected] ~]$ srvctl stop asm -n rac3

[[email protected] ~]$ srvctl remove asm -n rac3

3.刪除rac3節點上的監聽

[[email protected] ~]$ netca

4.刪除節點3上的$ORACLE_HOME文件夾

[[email protected] ~]$ rm -rf $ORACLE_HOME

更新保留節點的ORACLE_HOME信息

[[email protected] ~]$ cd $ORACLE_HOME/oui/bin

[[email protected] bin]$ ./runInstaller -updateNodelist ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_2 "CLUSTER_NODES=rac1,rac2"

Starting Oracle Universal Installer...

No pre-requisite checks found in oraparam.ini, no system pre-requisite checks will be executed.

‘UpdateNodeList‘ was successful.

5.清除rac上配置信息

rac3節點上：

[[email protected] ~]$ cat $CRS_HOME/opmn/conf/ons.config

localport=6113

remoteport=6200

loglevel=3

useocr=on

rac1節點上：

[[email protected] bin]$ racgons remove_config rac3:6200

6.刪除rac3節點

rac3節點上：

[[email protected] ~]# cd /u01/app/oracle/product/10.2.0/db_1/install （CRS_HOME）

[[email protected] install]# ./rootdelete.sh

Shutting down Oracle Cluster Ready Services (CRS):

Stopping resources.

Successfully stopped CRS resources

Stopping CSSD.

Shutting down CSS daemon.

Shutdown request successfully issued.

Shutdown has begun. The daemons should exit soon.

Checking to see if Oracle CRS stack is down...

Oracle CRS stack is not running.

Oracle CRS stack is down now.

Removing script for Oracle Cluster Ready services

Updating ocr file for downgrade

Cleaning up SCR settings in ‘/etc/oracle/scls_scr‘

這時候已經刪除rac3上的CRS

[[email protected] ~]$ crs_stat -t

Name Type Target State Host

------------------------------------------------------------

ora....B1.inst application ONLINE ONLINE rac1

ora....B2.inst application ONLINE ONLINE rac2

ora.RACDB.db application ONLINE ONLINE rac1

ora....SM1.asm application ONLINE ONLINE rac1

ora....C1.lsnr application ONLINE ONLINE rac1

ora.rac1.gsd application ONLINE ONLINE rac1

ora.rac1.ons application ONLINE ONLINE rac1

ora.rac1.vip application ONLINE ONLINE rac1

ora....SM2.asm application ONLINE ONLINE rac2

ora....C2.lsnr application ONLINE ONLINE rac2

ora.rac2.gsd application ONLINE ONLINE rac2

ora.rac2.ons application ONLINE ONLINE rac2

ora.rac2.vip application ONLINE ONLINE rac2

可是此時通過olsnodes查看仍未三個節點

[[email protected] bin]# ./olsnodes -n

rac1 1

rac2 2

rac3 3

從集群中刪除節點並更新OCR：

[[email protected] install]# ./rootdeletenode.sh rac3

CRS nodeapps are deleted successfully

clscfg: EXISTING configuration version 3 detected.

clscfg: version 3 is 10G Release 2.

Node deletion operation successful.

‘rac3‘ deleted successfully

rac3節點執行OUI刪除CRS安裝文件夾

[[email protected] ~]$ cd $CRS_HOME

[[email protected] db_1]$ cd oui/

[[email protected] oui]$ cd bin/

[[email protected] bin]$ ./runInstaller -deinstall -silent "REMOVE_HOMES={/u01/app/oracle/product/10.2.0/db_1}" CRS=TRUE -local

Starting Oracle Universal Installer...

No pre-requisite checks found in oraparam.ini, no system pre-requisite checks will be executed.

Preparing to launch Oracle Universal Installer from /tmp/OraInstall2014-08-25_02-14-19PM. Please wait ...[[email protected] bin]$ Oracle Universal Installer, Version 10.2.0.1.0 Production

Copyright (C) 1999, 2005, Oracle. All rights reserved.

Starting deinstall

Deinstall in progress (Mon Aug 25 14:14:23 CST 2014)

WARNING:The directory: /u01/app/oracle/product/10.2.0/db_1 will be deleted after deinstall.

Click on "Yes" to continue.

Click on "No" to perform deinstall without deleting the directory.

Click on "Cancel" to go back to "Inventory Dialog".

............................................................... 100% Done.

Deinstall successful

End of install phases.(Mon Aug 25 14:14:42 CST 2014)

End of deinstallations

Please check ‘/u01/app/oracle/oraInventory/logs/silentInstall2014-08-25_02-14-19PM.log‘ for more details.

在rac1節點上更新集群節點信息

[[email protected] ~]$ cd $CRS_HOME/oui/bin/

[[email protected] bin]$ ./runInstaller -updateNodeList ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1 "CLUSTER_NODES=rac1,rac2" CRS=TRUE

Starting Oracle Universal Installer...

No pre-requisite checks found in oraparam.ini, no system pre-requisite checks will be executed.

‘UpdateNodeList‘ was successful.

至此節點rac3刪除完成

【Oracle】RAC刪除節點