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说明：本文为Oracle 11g RAC增删节点指导手册

版本：本文摘自Oracle MOS并对原文进行了修改优化

标签：RAC增删节点、RAC添加节点、RAC增加节点、RAC剔除节点、RAC删除节点

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★ 相关文章

★ 正文（增加节点）

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* Steps to add a Node in the Cluster configuration（rac2 will be add）

★ The software has been deployed

- GRID - You will be prompted to run the below scripts on new node. su - root # /u01/app/11.2.0/grid/crs/install/rootcrs.pl -deconfig -force -verbose # scp rac1:/u01/app/11.2.0/grid/crs/install/crsconfig_params rac2:/u01/app/11.2.0/grid/crs/install/ # /u01/app/oraInventory/orainstRoot.sh    （This command does not normally need to be executed manually） # /u01/app/11.2.0/grid/root.sh Run both the scripts as root user on new node.

- If successful, clusterware daemons, the listener, the ASM instance, etc. should be started by the "root.sh" script

su - grid # crs_stat -t -v # crsctl check crs # crsctl stat res -t

- DB

- On new node run the following  command to add new node to the db-cluster su - oracle $ $ORACLE_HOME/oui/bin/runInstaller -updateNodeList ORACLE_HOME=$ORACLE_HOME "CLUSTER_NODES={rac1,rac2}"      

- On main-node run the dbca to add new instance on new node.

$ dbca + Oracle RAC Database + Instance Management + Add an Instance + Enter SYS user details and proceed with Instance addition.

 

★ The software has not been deployed

Make sure all the prechecks are completed before proceeding. $ cluvfy stage -pre crsinst -n rac1,rac2 -verbose $ cluvfy stage -pre nodeadd -n rac2 [-fixup [-fixupdir fixup_dir]] [-verbose]

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-- Extend Clusterware       - From an existing node, run "addNode.sh" as grid user to extend the clusterware. $ export IGNORE_PREADDNODE_CHECKS=Y $ cd $ORACLE_HOME/oui/bin $ ./addNode.sh "CLUSTER_NEW_NODES={rac2}" "CLUSTER_NEW_VIRTUAL_HOSTNAMES={rac2-vip}" "CLUSTER_NEW_PRIVATE_NODE_NAMES={rac2-priv}"

- At the end, if Cluster Node Addition is successful, you will be prompted to run the below scripts on new node.

/u01/app/oraInventory/orainstRoot.sh    （This command does not normally need to be executed manually） /u01/app/11.2.0/grid/root.sh Run both the scripts as root user on new node.

- If successful, clusterware daemons, the listener, the ASM instance, etc. should be started by the "root.sh" script

# crs_stat -t -v # crsctl check crs # crsctl stat res -t

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-- Extend Oracle Database Software        - From an existing node  - as the database software owner  - run the following command to extend the Oracle database software to the new node. $ cd $ORACLE_HOME/oui/bin $ ./addNode.sh -silent "CLUSTER_NEW_NODES={node2}"

If there is error like blow ,you need to run the below command and rerun the above command again.

Error      - "SEVERE:The new nodes 'rac2' are already part of the cluster". Analysis - It was picking up same hostname rac2 twice, instead of picking both the hostnames (rac1,rac2). Solution - Oracle Home was not detached from existing node. Run the below command as oracle user on node1. $ cd $ORACLE_HOME/oui/bin $ ./runInstaller -updateNodeList ORACLE_HOME=$ORACLE_HOME "CLUSTER_NODES={rac1}"        Run the command again and it should proceed ahead.

- At the end, if Oracle Software Extension is successful, you will be prompted to run the root.sh script on new node.

/u01/app/oracle/products/11.2.0/db/root.sh Run the script as root user on new node.

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-- Add Instance to Clustered Database - From an existing node – as the database software owner – run the following command to add the instance, $ dbca + Oracle RAC Database + Instance Management + Add an Instance + Enter SYS user details and proceed with Instance addition.

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Possible commands： # <$GRID_HOME>/crs/install/rootcrs.pl -deconfig -force -verbose

 

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