Though it is mentioned in many blogs/ books I put this here for my reference.
[root@rac2 disks]# cd /u01/
[root@rac2 u01]#. /app/oraInventory/orainstRoot.sh
Changing permissions of /u01/app/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.
Changing groupname of /u01/app/oraInventory to oinstall.
The execution of the script is complete.
[root@rac2 /]# pwd
/
[root@rac2 /]# cd /u01
[root@rac2 u01]# cd 11.2.0/
[root@rac2 11.2.0]# cd grid/
[root@rac2 grid]# ls -ltr ro*
-rwxr-xr-x 1 grid oinstall 456 Sep 29 01:27 rootupgrade.sh
-rwxr-x--- 1 grid oinstall 443 Sep 29 01:27 root.sh
[root@rac2 grid]# ./root.sh
Performing root user operation for Oracle 11g
The following environment variables are set as:
ORACLE_OWNER= grid
ORACLE_HOME= /u01/11.2.0/grid
Enter the full pathname of the local bin directory: [/usr/local/bin]:
Copying dbhome to /usr/local/bin ...
Copying oraenv to /usr/local/bin ...
Copying coraenv to /usr/local/bin ...
Creating /etc/oratab file...
Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root script.
Now product-specific root actions will be performed.
Using configuration parameter file: /u01/11.2.0/grid/crs/install/crsconfig_param s
Creating trace directory
User ignored Prerequisites during installation
OLR initialization - successful
root wallet
root wallet cert
root cert export
peer wallet
profile reader wallet
pa wallet
peer wallet keys
pa wallet keys
peer cert request
pa cert request
peer cert
pa cert
peer root cert TP
profile reader root cert TP
pa root cert TP
peer pa cert TP
pa peer cert TP
profile reader pa cert TP
profile reader peer cert TP
peer user cert
pa user cert
Adding Clusterware entries to inittab
CRS-2672: Attempting to start 'ora.mdnsd' on 'rac2'
CRS-2676: Start of 'ora.mdnsd' on 'rac2' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on 'rac2'
CRS-2676: Start of 'ora.gpnpd' on 'rac2' succeeded
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac2'
CRS-2672: Attempting to start 'ora.gipcd' on 'rac2'
CRS-2676: Start of 'ora.cssdmonitor' on 'rac2' succeeded
CRS-2676: Start of 'ora.gipcd' on 'rac2' succeeded
CRS-2672: Attempting to start 'ora.cssd' on 'rac2'
CRS-2672: Attempting to start 'ora.diskmon' on 'rac2'
CRS-2676: Start of 'ora.diskmon' on 'rac2' succeeded
CRS-2676: Start of 'ora.cssd' on 'rac2' succeeded
ASM created and started successfully.
Disk Group OCR_VD created successfully.
clscfg: -install mode specified
Successfully accumulated necessary OCR keys.
Creating OCR keys for user 'root', privgrp 'root'..
Operation successful.
CRS-4256: Updating the profile
Successful addition of voting disk abbc6a6610464ff7bf09a97da611423d.
Successfully replaced voting disk group with +OCR_VD.
CRS-4256: Updating the profile
CRS-4266: Voting file(s) successfully replaced
## STATE File Universal Id File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE abbc6a6610464ff7bf09a97da611423d (/dev/oracleasm/disks/OCR_VD01) [OCR_VD]
Located 1 voting disk(s).
CRS-2672: Attempting to start 'ora.asm' on 'rac2'
CRS-2676: Start of 'ora.asm' on 'rac2' succeeded
CRS-2672: Attempting to start 'ora.OCR_VD.dg' on 'rac2'
CRS-2676: Start of 'ora.OCR_VD.dg' on 'rac2' succeeded
CRS-2672: Attempting to start 'ora.registry.acfs' on 'rac2'
CRS-2676: Start of 'ora.registry.acfs' on 'rac2' succeeded
Configure Oracle Grid Infrastructure for a Cluster ... succeeded
[root@rac2 grid]#
[root@rac2 grid]#
Node2:
[root@rac1 u01]# cd ../
[root@rac1 /]# ./u01/app/oraInventory/orainstRoot.sh
Changing permissions of /u01/app/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.
Changing groupname of /u01/app/oraInventory to oinstall.
The execution of the script is complete.
[root@rac1 /]#. /u01/11.2.0/grid/root.sh
Performing root user operation for Oracle 11g
The following environment variables are set as:
ORACLE_OWNER= grid
ORACLE_HOME= /u01/11.2.0/grid
Enter the full pathname of the local bin directory: [/usr/local/bin]:
Copying dbhome to /usr/local/bin ...
Copying oraenv to /usr/local/bin ...
Copying coraenv to /usr/local/bin ...
Creating /etc/oratab file...
Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root script.
Now product-specific root actions will be performed.
Using configuration parameter file: /u01/11.2.0/grid/crs/install/crsconfig_params
Creating trace directory
User ignored Prerequisites during installation
OLR initialization - successful
Adding Clusterware entries to inittab
CRS-4402: The CSS daemon was started in exclusive mode but found an active CSS daemon on node rac2, number 1, and is terminating
An active cluster was found during exclusive startup, restarting to join the cluster
Configure Oracle Grid Infrastructure for a Cluster ... succeeded
[root@rac1 /]#
