Remove Node From Oracle RAC 10g (Part-1)

In This Article I Will Show You How to Remove Node From Oracle Real Application Cluster 10g :

Let’s Start : 

Main Steps To Remove Node From Oracle Real Application Cluster : 

1.Delete the instance on the node to be deleted.
2.Clean up the ASM instance.
3.Remove the listener from the node to be deleted.
4.Remove the node from the database.
5.Remove the node from ASM.
6.Remove ONS configuration from the node to be deleted.
7.Remove the node from the cluster-ware.
 **The First Steps Is To Delete Instance On The Node (From The Node you want to delete) —- >  DBCA
On The Above Message Press Ok .
**Clean Up The ASM Instance : (From node you want to delete) 

you need to manually remove the initialization parameter file of that ASM instance
remove all the log files of that ASM instance. These files are generally located in the $ORACLE_BASE/admin directory then remove the associated ASM entry from the /etc/oratabfile
Remove The Listener (From the Node You want to delete )——> NETCA

Note : You need to choose the Node you want to be deleted , Not Select All .

Part Two In Separate Article 

Oracle Rac 10g Add Node Steps

This Article Discuss Adding/Remove Node In Oracle Real application Cluster 10g The below Steps easy all you have to do is follow up with them Let’s Start :


1-Check Pre-requisities On All Node , This Include Old Node And New Node .

cluvfy  stage -pre crsinst -n -r 10gR2

 2-From the First Node , Execute the following Command :


The Final Result For Step 2 .

3-We need to configure new ONS (From The First Node) :

cd cluster_home/bin
cat cluster_home/opmn/conf/ons.config (to get the remoteport)
./racgons add_config Node-name:6200 (remoteport)

4-Optional : needed Only If Specific Home Directory to host ASM (From the First Node)


5- From The First node we need to Add RAC

cd cluster_home/bin


6-Add Listener , Do This Steps From The New Node On Terminal

netca –> Cluster Configuration —>Name of New Node

7-Final Step , Add Database Instance To new node ( from the First Node ) Using

DBCA —> Oracle Real Application Cluster —> Instance Management —> Add Instance



You Need Follow Up with Screen as Normal Installation Of Database
List of cluster your RAC database and enter SYS credentials 
List of cluster database instances , next
Instance naming and node selection . Instance Name
if you are using ASM for your database storage,the DBCA detects the need for an ASM instance creation on the new nodeThis must be done before the DBCA can create the database instance on that node. Click Yes.

Thank You
Osama Mustafa

I will Talk Later How To Remove Node From Oracle Real Application Cluster .