Installation Of Oracle 10g R2 (10.2.0.1) Real Application Cluster (RAC) Software on  RedHat AS 3 x86 (RHEL3) / CentOS 3 x86

By Bhavin Hingu

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This document explains the step by step process of installing Oracle 10g Real Application Cluster (RAC) with OUI.

     Installing Oracle 10g R2 (10.2.0.1) Real Application Cluster (RAC) Software 32-bit on RHEL 3 / CentOS 3:

You MUST install this software from one node only. I usually prefer to install the Oracle software without creating the starter database.  So, here I have selected the "Software Only" option.

Start the runInstaller command as oracle user from any one node When OUI displays the Welcome page, click Next

[oracle@node2-pub oracle]$ /mnt/cdrom/runInstaller

     Xlib: connection to ":0.0" refused by server
     Xlib: No protocol specified
                                                                                                                             
     Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.

        If you get the above error, please execute the below command as root and then start the runInstaller by connecting as oracle.

 

[root@node2-pub root]# xhost +
access control disabled, clients can connect from any host
[root@node2-pub root]# su - oracle
[oracle@node2-pub oracle]$ /mnt/cdrom/runInstaller

 

welcome screen

Click Next

2

Select "Custom" and Click Next.

3

Click Next

4

Select all the nodes and Click Next

5

Click Next

6

At this step; you should not receive any error. If you have configured the Pre-Installation steps correctly, then you will not get any errors. I get one warning here as you can see which
is complaining about the low memory than required. I had only 512 MB ram and the required memory is 1GB but I would not worry about this warning and will check the status box.

Click Next

7

Leave the Default values (dba, dba) and Click Next

8

Select "Install database Software Only" and Click Next

9

Click Install

10

11

Execute the mentioned script on all the nodes.

12


13

Click Exit

At this time, you need to update the .bash_profile file with the ORACLE_HOME and PATH value as shown below. This file needs to be updated on all the nodes


[oracle@node2-pub oracle]$ cat .bash_profile
# .bash_profile
 
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi
 
# User specific environment and startup programs
 
PATH=$PATH:$HOME/bin
 
export PATH
unset USERNAME
export ORACLE_BASE=/u01/app/oracle
export ORACLE_SID=RacDB2  # For Node Node1-pub -- RacDB1
export ORACLE_HOME=$ORACLE_BASE/oracle/product/10.2.0/db_1
export PATH=$PATH:$ORACLE_HOME/bin
export LD_LIBRARY_PATH=$ORACLE_HOME/lib

 

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