Removing nodes from cluster - question

Hi Guys,
I came across following while going thru oracle docs for removing a node from a cluster:
Step 2: Deleting Nodes from Oracle Real Application Clusters Databases
5.If you are using a non-shared Oracle home, from an existing node, run the following command where node_list is a comma-delimited list of nodes that remain in the cluster:
runInstaller -updateNodeList ORACLE_HOME=Oracle_home "CLUSTER_NODES={node_list}"
If you are using a shared Oracle home, from an existing node, run the following command where node_list is a comma-delimited list of nodes that remain in the cluster:
runInstaller -updateNodeList -noClusterEnabled ORACLE_HOME=Oracle_home
"CLUSTER_NODES={node_list}"
So here we are providing a list of existing(remaining) nodes to update oracle inventory.Now what if we have more then one oracle homes on each of these nodes - say ORACLE_HOME1,ORACLE_HOME2 etc. for multiple databases - Do we repeat this statement for all oracle homes or is their any other way around?
Also what does oracle mean by shared/non-shared oracle home?
Regards.

You must run the update node list for each ORACLE_HOME on that machine. If this is RAC, the runInstaller will take care to update all nodes, so again, you run it once per ORACLE_HOME installed.
Shared Home is a single copy of the Oracle software, rather than each node holding their own copy of the software. There's a paper that talks about these two topics and gives some examples of full commands on OTN:
http://www.oracle.com/technology/products/database/clustering/index.html
"Oracle Homes in an Oracle Real Application Clusters Environment(PDF) January 2008"
direct link: http://www.oracle.com/technology/products/database/clustering/pdf/oh_rac.pdf
Enjoy and hope this helps.
Saar.

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