Oracle 11g RAC删除节点相关事项

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操作前建议检查相关信息，如集群状态、数据库运行情况等，最好最一个备份。

######## 移除数据库 ########
– 通过 DBCA 方式删除节点（此处举例 rac03），请在 rac01/02 运行，如不说明，默认情况下 rac03 运行

dbca -silent -deleteInstance -nodeList rac03 -gdbName racdb -instanceName racdb3 -sysDBAUserName sys -sysDBAPassword Oracle

– 查看数据库运行情况

set lines 150
col instance for a30
select t.inst_id,t.thread#,t.status,t.instance from gv$thread t;

ALTER DATABASE DISABLE THREAD 3

— 停止监听

srvctl disable listener -l listener -n rac03

srvctl stop listener -l listener -n rac03
– 更新查看列表

[oracle@rac03 ~]$ cd $ORACLE_HOME/oui/bin

[oracle@rac03 bin]$ ./runInstaller -updateNodeList ORACLE_HOME=/u02/app/oracle/product/11.2.0/db_home “CLUSTER_NODES={rac03}” -local
Starting Oracle Universal Installer…

Checking swap space: must be greater than 500 MB. Actual 4769 MB Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
‘UpdateNodeList’ was successful.
[oracle@rac03 bin]$

– 移除数据库实例节点

./deinstall -local

…………………………

Cleaning the config for CCR
As CCR is not configured, so skipping the cleaning of CCR configuration
CCR clean is finished
Successfully detached Oracle home ‘/u02/app/oracle/product/11.2.0/db_home’ from the central inventory on the local node.
Successfully deleted directory ‘/u02/app/oracle/product/11.2.0/db_home’ on the local node.
Oracle Universal Installer cleanup was successful.

Oracle deinstall tool successfully cleaned up temporary directories.
#######################################################################

############# ORACLE DEINSTALL & DECONFIG TOOL END #############
– 更新其他的节点的 inventory RAC01/02 执行

./runInstaller -updateNodeList ORACLE_HOME=/u02/app/oracle/product/11.2.0/db_home “CLUSTER_NODES={rac1,rac2}”

########### 移除 grid#################

– 查看状态 olsnodes -s -t

– 移除节点 grid 资源配置 root 用户

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

………………
CRS-2673: Attempting to stop ‘ora.cssd’ on ‘rac03’
CRS-2677: Stop of ‘ora.cssd’ on ‘rac03’ succeeded
CRS-2673: Attempting to stop ‘ora.gipcd’ on ‘rac03’
CRS-2677: Stop of ‘ora.gipcd’ on ‘rac03’ succeeded
CRS-2673: Attempting to stop ‘ora.gpnpd’ on ‘rac03’
CRS-2677: Stop of ‘ora.gpnpd’ on ‘rac03’ succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on ‘rac03’ has completed
CRS-4133: Oracle High Availability Services has been stopped.
Successfully deconfigured Oracle clusterware stack on this node

– 删除 grid 节点 RAC01/02 执行 root 用户

/u01/app/11.2.0/grid/bin/crsctl delete node -n rac03

– 更新删除节点目录信息

/u01/app/11.2.0/grid/oui/bin/runInstaller -updateNodeList ORACLE_HOME=/u01/app/11.2.0/grid “CLUSTER_NODES={rac03}” CRS=TRUE -local

– 卸载集群

/u01/app/11.2.0/grid/deinstall/deinstall –local

- 更新 inventory RAC01/02 执行

/u01/app/11.2.0/grid/oui/bin/runInstaller -updateNodeList ORACLE_HOME=/u01/app/11.2.0/grid “CLUSTER_NODES={rac01,rac02}” CRS=TRUE

– 验证节点是否删除成功 RAC01/02 执行

[grid@rac02 ~]$ cluvfy stage -post nodedel -n rac03 -verbose

Performing post-checks for node removal

Checking CRS integrity…