Install Oracle 11g RAC on Oracle Enterprise Linux 5

0. Brief description

We will install 2-node RAC for testing purposes. With OS Oracle Enterprise Linux 64bit. Database version 11g Release 2(11.2.0.1.0) 64bit. Grid version also will be 11hR2.

1. Pre-requisites

– Disk space:
— 30GB for root directory
— 2.3GB for database
— 2.95GB for Oracle Grid Infrastructure
— approx. 4GB for swap

– Memory

     –4GB

– Installation Software

Enterprise Linux:https://edelivery.oracle.com/linux
Database: http://www.oracle.com/technetwork/database/enterprise-edition/downloads/112010-linx8664soft-100572.html (Choose database)
Grid:http://www.oracle.com/technetwork/products/clusterware/downloads/index.html  (Choose Linux x86-64)

2. Installation

2.1 Configuring Servers

After creation edit virtual machine settings.  Specify Enterprise Linux

Click OK. Open the console. And power on the machine.

Note swap size should be chosen by the following way:

1. If you have RAM between 1 and 2G, swap should be 1.5 x RAM (1.5 times RAM) .
2. For RAM 2 to 8G , swap space has to be equal to RAM.
3. For RAM more than 8G, swap needs to be 3/4 RAM.

Because of my RAM is 4GB , I choose 4GB of swap space.

I left logical volumes because , increasing disk space with it is easier than with physical volumes.

Desktop Environments ->GNOME Desktop Environment

Applications-> Editors, Graphical Internet, Text-based Internet

Developement->check all except KDE and Ruby

Click Development Tools and Optional packages button: check gcc44-4.4, gcc44-c++.

Click X Software Development and Optional packages button: check openmotif-devel.

Servers-> Server Configuration Tools

Base System-> Administration Tools,  Base, Java, Legacy Software Support, System Tools,  X Window System

Click Legacy Software Support and Optional packages button and choose: compat-db, openmotif22.

Click System Tools and Optional packages button and choose: 1:mc, oracleasm*, sysstat.

2.2 Installing Guest additions

 

 

 

 

 

 

 

 

 

 

 

 

From command line:

mkdir /0
cp /media/VMware\ Tools/VMwareTools-8.3.2-257589.tar.gz /0
cd /0
tar -zxf VMwareTools-8.3.2-257589.tar.gz
cd vmware-tools-distrib/
./vmware-install.pl

vmware-toolbox

“Starting with vSphere 4.1, the Copy and Paste options are, by default, disabled for security reasons.

To be able to copy and paste between the guest operating system and the remote console, you must enable the Copy and Paste options using the vSphere Client. Alternatively, you can use RDP (Remote Desktop Protocol) to connect to the Windows virtual machines.

To enable this option for a specific virtual machine:

1. Log into a vCenter Server system using the vSphere Client and power off the virtual machine.
2. Select the virtual machine and click the Summary tab.
3. Click Edit Settings.
4. Navigate to Options > Advanced > General and click Configuration Parameters.
5. Click Add Row.
6. Type these values in the Name and Value columns:
Name Value

• isolation.tools.copy.disable    false
• isolation.tools.paste.disable   false
Note: These options override any settings made in the VMware Tools control panel of the guest operating system.

1. Click OK to close the Configuration Parameters dialog, and click OK again to close the Virtual Machine Properties dialog.
2. Power on the virtual machine.“ source is  from http://kb.vmware.com

2.3.1 Install necessary RPM packages

For this we will need Oracle Enterprise Linux disk.

[root@node1 ~]# cp -R /media/Enterprise\ Linux\ dvd\ 20100405/Server /0

Note: Server folder contains necessary rpms. Most of rpms may already been installed.

cd /0/Server
rpm -Uvh binutils-2.17.50.0.6-14.el5.x86_64.rpm
rpm -Uvh compat-libstdc++-33-3.2.3-61.x86_64.rpm
rpm -Uvh elfutils-libelf-devel-0.137-3.el5.x86_64.rpm
rpm -Uvh elfutils-libelf-devel-static-0.137-3.el5.x86_64.rpm
rpm -Uvh gcc-4.1.2-48.el5.x86_64.rpm
rpm -Uvh gcc-c++-4.1.2-48.el5.x86_64.rpm
rpm -Uvh glibc-devel-2.5-49.x86_64.rpm
rpm -Uvh glibc-headers-2.5-49.x86_64.rpm
rpm -Uvh kernel-headers-2.6.18-194.el5.x86_64.rpm
rpm -Uvh libacl-devel-2.2.39-6.el5.x86_64.rpm
rpm -Uvh libaio-devel-0.3.106-5.i386.rpm
rpm -Uvh libaio-0.3.106-5.x86_64.rpm
rpm -Uvh libaio-0.3.106-5.i386.rpm
rpm -Uvh libaio-devel-0.3.106-5.x86_64.rpm
rpm -Uvh libgomp-4.4.0-6.el5.x86_64.rpm
rpm -Uvh libstdc++-devel-4.1.2-48.el5.x86_64.rpm
rpm -Uvh libstdc++-devel-4.1.2-48.el5.x86_64.rpm
rpm -Uvh sysstat-7.0.2-3.el5.x86_64.rpm
rpm -Uvh unixODBC-2.2.11-7.1.x86_64.rpm
rpm -Uvh unixODBC-2.2.11-7.1.i386.rpm
rpm -Uvh unixODBC-devel-2.2.11-7.1.x86_64.rpm
rpm -Uvh unixODBC-devel-2.2.11-7.1.i386.rpm
rpm -Uvh ksh-20100202-1.el5.x86_64.rpm

2.3.3 Modify /etc/hosts file

vi /etc/hosts

# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1       localhost

#Public
192.168.34.150   node1
192.168.34.151   node2

#Private
10.10.2.50      node1-priv
10.10.2.51      node2-priv

#Virtual
192.168.34.154  node1-vip
192.168.34.155  node2-vip

#SCAN
192.168.34.160    rac-scan

SCAN should be defined on DNS. But for now we will use hosts file.

2.3.4 Modify kernel parameters in /etc/sysctl.conf

vi /etc/sysctl.conf

# Controls the maximum shared segment size, in bytes
#kernel.shmmax = 68719476736

# Controls the maximum number of shared memory segments, in pages
#kernel.shmall = 4294967296

#Added by DBA
kernel.shmall                            = 2097152
kernel.shmmax                         = 2147483648
kernel.shmmni                          = 4096
kernel.sem                                 = 250 32000 100 128
fs.file-max                                   = 6815744
net.ipv4.ip_local_port_range  = 9000 65500
net.core.rmem_default            = 1048576
net.core.rmem_max                 = 4194304
net.core.wmem_default          = 262144
net.core.wmem_max              = 1048576
fs.aio-max-nr                            = 10448576

To make changes take effect :

/sbin/sysctl -p

2.3.5 Modify /etc/security/limits.conf

vi /etc/security/limits.conf

#*                        soft        core            0
#*                        hard      rss             10000
#@student        hard      nproc          20
#@faculty          soft        nproc          20
#@faculty          hard      nproc          50
#ftp                     hard      nproc           0
#@student        –            maxlogins   4

#Added By DBA
oracle           soft            nproc           2047
oracle           hard          nproc          16384
oracle           soft           nofile           1024
oracle           hard         nofile           65536

grid               soft            nproc           2047
grid               hard          nproc          16384
grid               soft            nofile           1024
grid               hard          nofile           65536

# End of file

2.3.6 Modify /etc/pam.d/login

vi /etc/pam.d/login

#%PAM-1.0
auth [user_unknown=ignore success=ok ignore=ignore default=bad] pam_securetty.so
auth       include      system-auth
account    required     pam_nologin.so
account    include      system-auth
password   include      system-auth

# pam_selinux.so close should be the first session rule
session    required     pam_selinux.so close
session    include      system-auth
session    required     pam_loginuid.so
session    optional     pam_console.so

# pam_selinux.so open should only be followed by sessions to be executed in the user context
session    required     pam_selinux.so open
session    optional     pam_keyinit.so force revoke
session required pam_limits.so

2.3.7 Deconfigure NTP

[root@node1 Server]# service ntpd stop
Shutting down ntpd:                                        [FAILED]
[root@node1 Server]# chkconfig ntpd off
[root@node1 Server]# mv /etc/ntp.conf /etc/ntp.conf.backup
[root@node1 Server]# rm /var/run/ntpd.pid
rm: cannot lstat `/var/run/ntpd.pid’: No such file or directory

2.3.8 Add necessary Groups and User, and create directories.

#Creating groups for Grid Infrastructure

groupadd asmadmin
groupadd asmdba
groupadd asmoper

#Creating groups for Oracle Software

groupadd oinstall
groupadd dba
groupadd oper

#Creating user for Grid Infrastructure

useradd -g oinstall -G dba,asmadmin,asmdba,asmoper -d /home/grid grid

#Creatnig user for Oracle Software

useradd -g oinstall -G dba,oper,asmdba -d /home/oracle oracle

#Setting password for users

passwd grid
passwd oracle

#Creating necessary directories

mkdir -p /u01/app/grid
mkdir -p /u01/app/11.2.0/grid
mkdir -p /u01/app/oracle
chown -R grid:oinstall /u01
chown oracle:oinstall /u01/app/oracle
chmod -R 775 /u01

2.3.9 Edit .bash_profile

#For Oracle user

su – oracle
vi .bash_profile

if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi

ORACLE_SID=orcl1; export ORACLE_SID

ORACLE_UNQNAME=orcl1; export ORACLE_UNQNAME

JAVA_HOME=/usr/local/java; export JAVA_HOME

ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE

ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1
export ORACLE_HOME

ORACLE_TERM=xterm; export ORACLE_TERM

NLS_DATE_FORMAT=”DD-MON-YYYY HH24:MI:SS”
export NLS_DATE_FORMAT

TNS_ADMIN=$ORACLE_HOME/network/admin; export TNS_ADMIN

ORA_NLS11=$ORACLE_HOME/nls/data; export ORA_NLS11

PATH=.:${JAVA_HOME}/bin:${PATH}:$HOME/bin:$ORACLE_HOME/bin
PATH=${PATH}:/usr/bin:/bin:/usr/bin/X11:/usr/local/bin
PATH=${PATH}:/u01/app/common/oracle/bin
export PATH

LD_LIBRARY_PATH=$ORACLE_HOME/lib
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$ORACLE_HOME/oracm/lib
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/lib:/usr/lib:/usr/local/lib
export LD_LIBRARY_PATH

CLASSPATH=$ORACLE_HOME/JRE
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/jlib
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/rdbms/jlib
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/network/jlib
export CLASSPATH

THREADS_FLAG=native; export THREADS_FLAG

export TEMP=/tmp
export TMPDIR=/tmp

umask 022

#For Grid user

su – grid
vi .bash_profile

if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi

ORACLE_SID=+ASM1; export ORACLE_SID

JAVA_HOME=/usr/local/java; export JAVA_HOME

ORACLE_BASE=/u01/app/grid; export ORACLE_BASE

ORACLE_HOME=/u01/app/11.2.0/grid; export ORACLE_HOME

ORACLE_TERM=xterm; export ORACLE_TERM

NLS_DATE_FORMAT=”DD-MON-YYYY HH24:MI:SS”; export NLS_DATE_FORMAT

TNS_ADMIN=$ORACLE_HOME/network/admin; export TNS_ADMIN

ORA_NLS11=$ORACLE_HOME/nls/data; export ORA_NLS11

PATH=.:${JAVA_HOME}/bin:${PATH}:$HOME/bin:$ORACLE_HOME/bin
PATH=${PATH}:/usr/bin:/bin:/usr/bin/X11:/usr/local/bin
PATH=${PATH}:/u01/app/common/oracle/bin
export PATH

LD_LIBRARY_PATH=$ORACLE_HOME/lib
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$ORACLE_HOME/oracm/lib
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/lib:/usr/lib:/usr/local/lib
export LD_LIBRARY_PATH

CLASSPATH=$ORACLE_HOME/JRE
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/jlib
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/rdbms/jlib
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/network/jlib
export CLASSPATH

THREADS_FLAG=native; export THREADS_FLAG

export TEMP=/tmp
export TMPDIR=/tmp

umask 022

2.3.10 Shutdown NODE1. Using clone, make NODE2 and configure it.

su –
[root@rac1 ~]# init 0

Open node2 console and run:

system-config-network

Delete .bak entries:

In DNS tab, change node1 to node2

In Devices tab, edit eth0 by the following way:

In the same window, in Hardware Device tab click Probe.

Click OK. Edit eth1.

In the same window, in Hardware Device tab click Probe.

Click OK. Activate eth0 and eth1 devices, Save(Ctrl+S) and Quite(Ctrl+Q)

Open terminal and run:

[root@node2 ~]# service network restart
Shutting down interface eth0:                               [  OK  ]
Shutting down interface eth1:                               [  OK  ]
Shutting down loopback interface:                      [  OK  ]
Bringing up loopback interface:                           [  OK  ]
Bringing up interface eth0:                                   [  OK  ]
Bringing up interface eth1:                                   [  OK  ]

Edit bash profiles:

#For oracle bash_profile change the following lines:

ORACLE_SID=orcl2; export ORACLE_SID
ORACLE_UNQNAME=orcl2; export ORACLE_UNQNAME

#For grid bash_profile change the following line:

ORACLE_SID=+ASM2; export ORACLE_SID

2.3.11  Add necessary shared disks.

Shutdown both nodes.

init 0

Edit virtual machine settings and add hardware:

Choose SCSI (1:0), different from SCSI specified for 30GB hard disk.

Choose Virtual for New SCSI Controller:

Repeat the steps 2 more times. So create 2 more disks with 10GB space and 1 with 3GB for CRS.

The second hard disk should look like this. Note , choose SCSI(1:1).

Now configure node2: Edit virtual machine settings and add hard disk

Do the same steps for other disks, just choose SCSI(1:1) for the first ,SCSI(1:2) for the second and SCSI(1:3) for the third  :

Power on both machines.

Open terminal in node1 server and partition newly added disks.(You don’t need to do the same from node2 because, disks are shared and node2 will see partitions created by node1, but it needs to reboot)

[root@node1 ~]# cd /dev
[root@node1 dev]# ls sd*
sda  sda1  sda2  sdb  sdc  sdd  sde
[root@node1 dev]# fdisk sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won’t be recoverable.

The number of cylinders for this disk is set to 1305.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): n
Command action
e   extended
p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-1305, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-1305, default 1305):
Using default value 1305

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

Do the same steps for 3 other disks.

Reboot node2.

2.3.12 Install and configure ASMLIB 

——————————-Download Link

http://www.oracle.com/technetwork/server-storage/linux/downloads/rhel5-084877.html

To know your kernel version:

[root@node1 dev]# uname -r
2.6.18-194.el5xen

I’ve downloaded just the following package, because others were already in Enterprise Linux installation disk.

oracleasmlib-2.0.4-1.el5.x86_64.rpm

——————————-Installation

To make visible oracleasmlib-2.0.4-1.el5.x86_64.rpm package for our guest OS , we should make .iso file from it and bound to the system as disk.  For this I use ISO Recorder 3.1

[root@node1 Server]# rpm -Uvh oracleasm-support-2.1.3-1.el5.x86_64.rpm
warning: oracleasm-support-2.1.3-1.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing…                ########################################### [100%]
package oracleasm-support-2.1.3-1.el5.x86_64 is already installed
[root@node1 Server]# rpm -Uvh oracleasm-2.6.18-194.el5xen-2.0.5-1.el5.x86_64.rpm
warning: oracleasm-2.6.18-194.el5xen-2.0.5-1.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing…                ########################################### [100%]
package oracleasm-2.6.18-194.el5xen-2.0.5-1.el5.x86_64 is already installed
file /lib/modules/2.6.18-194.el5xen/kernel/drivers/addon/oracleasm/oracleasm.ko from install of oracleasm-2.6.18-194.el5xen-2.0.5-1.el5.x86_64 conflicts with file from package oracleasm-2.6.18-194.el5xen-2.0.5-1.el5.x86_64
[root@node1 Server]# rpm -Uvh oracleasm-2.6.18-194.el5debug-2.0.5-1.el5.x86_64.rpm
warning: oracleasm-2.6.18-194.el5debug-2.0.5-1.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing…                ########################################### [100%]
package oracleasm-2.6.18-194.el5debug-2.0.5-1.el5.x86_64 is already installed
[root@node1 Server]# rpm -Uvh oracleasmlib-2.0.4-1.el5.x86_64.rpm
warning: oracleasmlib-2.0.4-1.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing…                ########################################### [100%]
1:oracleasmlib           ########################################### [100%]

/usr/sbin/oracleasm configure –i

Default user to own the driver interface []: grid
Default group to own the driver interface []: asmadmin
Start Oracle ASM library driver on boot (y/n) [n]: y
Scan for Oracle ASM disks on boot (y/n) [y]: y
Writing Oracle ASM library driver configuration: done

Do the same on node2.

# Load ASM kernel module

/usr/sbin/oracleasm init

Do the same on node2.

—————————Disk Creation

# Creating ASM disks

[root@node1 ~]# /usr/sbin/oracleasm createdisk CRSVOL /dev/sde1
Writing disk header: done
Instantiating disk: done
[root@node1 ~]# /usr/sbin/oracleasm createdisk DISK1 /dev/sdb1
Writing disk header: done
Instantiating disk: done
[root@node1 ~]# /usr/sbin/oracleasm createdisk DISK2 /dev/sdc1
Writing disk header: done
Instantiating disk: done
[root@node1 ~]# /usr/sbin/oracleasm createdisk DISK3 /dev/sdd1
Writing disk header: done
Instantiating disk: done

You don’t need to do the above steps on node2.(Node2 may require reboot)

# List disks

[root@node1 ~]# /usr/sbin/oracleasm listdisks
CRSVOL
DISK1
DISK2
DISK3

# Testing disk discovery, that is used by DBCA

[root@node1 ~]# oracleasm-discover
Using ASMLib from /opt/oracle/extapi/64/asm/orcl/1/libasm.so
[ASM Library – Generic Linux, version 2.0.4 (KABI_V2)]
Discovered disk: ORCL:CRSVOL [6281352 blocks (3216052224 bytes), maxio 512]
Discovered disk: ORCL:DISK1 [20964762 blocks (10733958144 bytes), maxio 512]
Discovered disk: ORCL:DISK2 [20964762 blocks (10733958144 bytes), maxio 512]
Discovered disk: ORCL:DISK3 [20964762 blocks (10733958144 bytes), maxio 512]

2.3.13 Check ping between nodes.

From node1: ping node2 and node2-priv

[root@node1 ~]# ping -c 1 node2
PING node2 (192.168.34.151) 56(84) bytes of data.
64 bytes from node2 (192.168.34.151): icmp_seq=1 ttl=64 time=1.51 ms

— node2 ping statistics —
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 1.511/1.511/1.511/0.000 ms
[root@node1 ~]# ping -c 1 node2-priv
PING node2-priv (10.10.2.51) 56(84) bytes of data.
64 bytes from node2-priv (10.10.2.51): icmp_seq=1 ttl=64 time=2.76 ms

— node2-priv ping statistics —
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 2.763/2.763/2.763/0.000 ms

From node2: ping node1 and node1-priv

[root@node2 ~]# ping -c1  node1
PING node1 (192.168.34.150) 56(84) bytes of data.
64 bytes from node1 (192.168.34.150): icmp_seq=1 ttl=64 time=0.580 ms

— node1 ping statistics —
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.580/0.580/0.580/0.000 ms
[root@node2 ~]# ping -c1  node1-priv
PING node1-priv (10.10.2.50) 56(84) bytes of data.
64 bytes from node1-priv (10.10.2.50): icmp_seq=1 ttl=64 time=0.560 ms

— node1-priv ping statistics —
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.560/0.560/0.560/0.000 ms

2.3.13  Create SSH connectivity manually

From both nodes, install ssh and telnet clients:

[root@node1 Server]# cd /0/Server/
[root@node1 Server]# rpm -Uvh openssh-clients-4.3p2-41.el5.x86_64.rpm
warning: openssh-clients-4.3p2-41.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing…                ########################################### [100%]
1:openssh-clients        ########################################### [100%]

[root@node1 Server]# rpm -Uvh telnet-0.17-39.el5.x86_64.rpm
warning: telnet-0.17-39.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing…                ########################################### [100%]
1:telnet                 ########################################### [100%]

[root@node1 Server]# rpm -Uvh openssh-server-4.3p2-41.el5.x86_64.rpm
warning: openssh-server-4.3p2-41.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing…                ########################################### [100%]
package openssh-server-4.3p2-41.el5.x86_64 is already installed

[root@node1 Server]# rpm -qa | grep ssh
openssh-server-4.3p2-41.el5
openssh-askpass-4.3p2-41.el5
openssh-clients-4.3p2-41.el5
openssh-4.3p2-41.el5

From node1:

[root@node1 ~]# su – oracle
[oracle@node1 ~]$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/oracle/.ssh/id_rsa):
Created directory ‘/home/oracle/.ssh’.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/oracle/.ssh/id_rsa.
Your public key has been saved in /home/oracle/.ssh/id_rsa.pub.
The key fingerprint is:
91:c3:7b:dc:20:c0:74:83:8a:f2:73:de:04:42:c8:fe oracle@node1
[oracle@node1 ~]$ ssh-keygen -t dsa
Generating public/private dsa key pair.
Enter file in which to save the key (/home/oracle/.ssh/id_dsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/oracle/.ssh/id_dsa.
Your public key has been saved in /home/oracle/.ssh/id_dsa.pub.
The key fingerprint is:
f5:79:ab:dd:05:a7:42:48:25:00:27:2a:9d:a5:e2:e2 oracle@node1

From node2:

[root@node2 ~]# su – oracle
[oracle@node2 ~]$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/oracle/.ssh/id_rsa):
Created directory ‘/home/oracle/.ssh’.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/oracle/.ssh/id_rsa.
Your public key has been saved in /home/oracle/.ssh/id_rsa.pub.
The key fingerprint is:
0d:8c:c2:24:1c:32:0e:bf:db:49:e1:e3:3c:71:ef:64 oracle@node2
[oracle@node2 ~]$ ssh-keygen -t dsa
Generating public/private dsa key pair.
Enter file in which to save the key (/home/oracle/.ssh/id_dsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/oracle/.ssh/id_dsa.
Your public key has been saved in /home/oracle/.ssh/id_dsa.pub.
The key fingerprint is:
1d:52:a7:20:b4:54:4b:c9:12:e1:65:ca:08:a8:e9:de oracle@node2

From node1:

[oracle@node1 ~]$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
[oracle@node1 ~]$ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
[oracle@node1 ~]$ ssh node2 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
The authenticity of host ‘node2 (192.168.34.151)’ can’t be established.
RSA key fingerprint is 19:1e:e6:3a:cc:14:69:87:22:35:11:6d:aa:e6:dc:15.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘node2,192.168.34.151’ (RSA) to the list of known hosts.
oracle@node2’s password:
[oracle@node1 ~]$ ssh node2 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
oracle@node2’s password:
[oracle@node1 ~]$ scp ~/.ssh/authorized_keys node2:~/.ssh/authorized_keys
oracle@node2’s password:
authorized_keys                               100% 2594     2.5KB/s   00:00

———————————————Check that you are not prompted for the password

From node1 and node2:

[oracle@node1 ~]$ ssh node1 date
The authenticity of host ‘node1 (192.168.34.150)’ can’t be established.
RSA key fingerprint is 24:a1:fb:71:ce:8a:9c:2d:6c:42:89:6f:e5:74:b2:f2.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘node1,192.168.34.150’ (RSA) to the list of known hosts.
Tue Sep  4 12:09:53 GET 2012
[oracle@node1 ~]$ ssh node2 date
Tue Sep  4 12:10:01 GET 2012
[oracle@node1 ~]$ ssh node1-priv date
The authenticity of host ‘node1-priv (10.10.2.50)’ can’t be established.
RSA key fingerprint is 24:a1:fb:71:ce:8a:9c:2d:6c:42:89:6f:e5:74:b2:f2.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘node1-priv,10.10.2.50’ (RSA) to the list of known hosts.
Tue Sep  4 12:10:11 GET 2012
[oracle@node1 ~]$ ssh node2-priv date
The authenticity of host ‘node2-priv (10.10.2.51)’ can’t be established.
RSA key fingerprint is 19:1e:e6:3a:cc:14:69:87:22:35:11:6d:aa:e6:dc:15.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘node2-priv,10.10.2.51’ (RSA) to the list of known hosts.
Tue Sep  4 12:10:23 GET 2012

Check one more time to ensure that you are not prompted for the password. From node1 and node2.

[oracle@node1 ~]$ ssh node1 date
Tue Sep  4 12:14:57 GET 2012
[oracle@node1 ~]$ ssh node2 date
Tue Sep  4 12:15:01 GET 2012
[oracle@node1 ~]$ ssh node1-priv date
Tue Sep  4 12:15:06 GET 2012
[oracle@node1 ~]$ ssh node2-priv date
Tue Sep  4 12:15:12 GET 2012

Do the same steps with grid user:

From node1:

[root@node1 ~]# su – grid
[grid@node1 ~]$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/grid/.ssh/id_rsa):
Created directory ‘/home/grid/.ssh’.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/grid/.ssh/id_rsa.
Your public key has been saved in /home/grid/.ssh/id_rsa.pub.
The key fingerprint is:
e1:c2:55:3e:fc:01:75:64:f7:69:72:f6:9d:1e:08:0c grid@node1
[grid@node1 ~]$ ssh-keygen -t dsa
Generating public/private dsa key pair.
Enter file in which to save the key (/home/grid/.ssh/id_dsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/grid/.ssh/id_dsa.
Your public key has been saved in /home/grid/.ssh/id_dsa.pub.
The key fingerprint is:
26:36:b8:e4:ac:d5:62:91:f3:46:8a:ac:65:73:ec:6a grid@node1

From node2:

[root@node2 ~]# su – grid
[grid@node2 ~]$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/grid/.ssh/id_rsa):
Created directory ‘/home/grid/.ssh’.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/grid/.ssh/id_rsa.
Your public key has been saved in /home/grid/.ssh/id_rsa.pub.
The key fingerprint is:
f7:54:a6:21:e4:36:a8:9a:e7:93:fb:35:87:70:cc:05 grid@node2
[grid@node2 ~]$ ssh-keygen -t dsa
Generating public/private dsa key pair.
Enter file in which to save the key (/home/grid/.ssh/id_dsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/grid/.ssh/id_dsa.
Your public key has been saved in /home/grid/.ssh/id_dsa.pub.
The key fingerprint is:
33:36:04:e3:95:0e:b6:d8:92:67:a1:4e:e4:da:8f:26 grid@node2

From node1:

[grid@node1 ~]$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
[grid@node1 ~]$ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
[grid@node1 ~]$ ssh node2 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
The authenticity of host ‘node2 (192.168.34.151)’ can’t be established.
RSA key fingerprint is 19:1e:e6:3a:cc:14:69:87:22:35:11:6d:aa:e6:dc:15.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘node2,192.168.34.151’ (RSA) to the list of known hosts.
grid@node2’s password:
[grid@node1 ~]$ ssh node2 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
grid@node2’s password:
[grid@node1 ~]$ scp ~/.ssh/authorized_keys node2:~/.ssh/authorized_keys
grid@node2’s password:
authorized_keys

———————————————Check that you are not prompted for the password

From node1 and node2:

[grid@node1 ~]$ ssh node1 date
The authenticity of host ‘node1 (192.168.34.150)’ can’t be established.
RSA key fingerprint is 24:a1:fb:71:ce:8a:9c:2d:6c:42:89:6f:e5:74:b2:f2.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘node1,192.168.34.150’ (RSA) to the list of known hosts.
Tue Sep  4 12:44:31 GET 2012
[grid@node1 ~]$ ssh node2 date
Tue Sep  4 12:44:37 GET 2012
[grid@node1 ~]$ ssh node1-priv date
The authenticity of host ‘node1-priv (10.10.2.50)’ can’t be established.
RSA key fingerprint is 24:a1:fb:71:ce:8a:9c:2d:6c:42:89:6f:e5:74:b2:f2.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘node1-priv,10.10.2.50’ (RSA) to the list of known hosts.
Tue Sep  4 12:44:47 GET 2012
[grid@node1 ~]$ ssh node2-priv date
The authenticity of host ‘node2-priv (10.10.2.51)’ can’t be established.
RSA key fingerprint is 19:1e:e6:3a:cc:14:69:87:22:35:11:6d:aa:e6:dc:15.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘node2-priv,10.10.2.51’ (RSA) to the list of known hosts.
Tue Sep  4 12:44:59 GET 2012

Check one more time to ensure that you are not prompted for the password. From node1 and node2.

[grid@node1 ~]$ ssh node1 date
Tue Sep  4 12:46:57 GET 2012
[grid@node1 ~]$ ssh node2 date
Tue Sep  4 12:47:02 GET 2012
[grid@node1 ~]$ ssh node1-priv date
Tue Sep  4 12:47:08 GET 2012
[grid@node1 ~]$ ssh node2-priv date
Tue Sep  4 12:47:12 GET 2012

2.4 Oracle Grid Installation

Download Grid software installation. And locate it on the first node.

Download link: http://download.oracle.com/otn/linux/oracle11g/R2/linux.x64_11gR2_grid.zip

Login as a grid user.

# Unzip and install

mkdir  /home/grid/myinstall
unzip /tmp/linux.x64_11gR2_grid.zip  -d  /home/grid/myinstall

cd /home/grid/myinstall
chmod -R 777 *
cd 20120613/
chown -R grid:oinstall *

First of all, run runcluvfy.sh script  to ensure that pre-requisites are satisfied.

grid@node1 20120613]$ ./runcluvfy.sh stage -pre crsinst -n node1,node2 -verbose

No errors were returned from the script above:

Pre-check for cluster services setup was successful

But if you have some failures like some packages are missing, correct them by installing before continue.

Now run runInstaller.sh . Don’t forget to connect as grid user from the first node.

[grid@node1 20120613]$ ./runInstaller

Add the second node:

From node1:

[grid@node1 ~]$ su –
Password:
[root@node1 ~]# /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.

From node2:

[root@node2 ~]# /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.

From node1(wait until completes):

[root@node1 ~]# /u01/app/11.2.0/grid/root.sh
Running Oracle 11g root.sh script…

The following environment variables are set as:
ORACLE_OWNER= grid
ORACLE_HOME=  /u01/app/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.sh script.
Now product-specific root actions will be performed.
2012-09-04 14:59:27: Parsing the host name
2012-09-04 14:59:27: Checking for super user privileges
2012-09-04 14:59:27: User has super user privileges
Using configuration parameter file: /u01/app/11.2.0/grid/crs/install/crsconfig_params
Creating trace directory
LOCAL ADD MODE
Creating OCR keys for user ‘root’, privgrp ‘root’..
Operation 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 daemon to inittab
CRS-4123: Oracle High Availability Services has been started.
ohasd is starting
CRS-2672: Attempting to start ‘ora.gipcd’ on ‘node1’
CRS-2672: Attempting to start ‘ora.mdnsd’ on ‘node1’
CRS-2676: Start of ‘ora.mdnsd’ on ‘node1’ succeeded
CRS-2676: Start of ‘ora.gipcd’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.gpnpd’ on ‘node1’
CRS-2676: Start of ‘ora.gpnpd’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.cssdmonitor’ on ‘node1’
CRS-2676: Start of ‘ora.cssdmonitor’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.cssd’ on ‘node1’
CRS-2672: Attempting to start ‘ora.diskmon’ on ‘node1’
CRS-2676: Start of ‘ora.diskmon’ on ‘node1’ succeeded
CRS-2676: Start of ‘ora.cssd’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.ctssd’ on ‘node1’
CRS-2676: Start of ‘ora.ctssd’ on ‘node1’ succeeded

ASM created and started successfully.

DiskGroup CRS created successfully.

clscfg: -install mode specified
Successfully accumulated necessary OCR keys.
Creating OCR keys for user ‘root’, privgrp ‘root’..
Operation successful.
CRS-2672: Attempting to start ‘ora.crsd’ on ‘node1’
CRS-2676: Start of ‘ora.crsd’ on ‘node1’ succeeded
CRS-4256: Updating the profile
Successful addition of voting disk 37e0beba09a14f4cbf7e8ba1524e1314.
Successfully replaced voting disk group with +CRS.
CRS-4256: Updating the profile
CRS-4266: Voting file(s) successfully replaced
##  STATE    File Universal Id                File Name Disk group
—  —–    —————–                ——— ———
1. ONLINE   37e0beba09a14f4cbf7e8ba1524e1314 (ORCL:CRSVOL) [CRS]
Located 1 voting disk(s).
CRS-2673: Attempting to stop ‘ora.crsd’ on ‘node1’
CRS-2677: Stop of ‘ora.crsd’ on ‘node1’ succeeded
CRS-2673: Attempting to stop ‘ora.asm’ on ‘node1’
CRS-2677: Stop of ‘ora.asm’ on ‘node1’ succeeded
CRS-2673: Attempting to stop ‘ora.ctssd’ on ‘node1’
CRS-2677: Stop of ‘ora.ctssd’ on ‘node1’ succeeded
CRS-2673: Attempting to stop ‘ora.cssdmonitor’ on ‘node1’
CRS-2677: Stop of ‘ora.cssdmonitor’ on ‘node1’ succeeded
CRS-2673: Attempting to stop ‘ora.cssd’ on ‘node1’
CRS-2677: Stop of ‘ora.cssd’ on ‘node1’ succeeded
CRS-2673: Attempting to stop ‘ora.gpnpd’ on ‘node1’
CRS-2677: Stop of ‘ora.gpnpd’ on ‘node1’ succeeded
CRS-2673: Attempting to stop ‘ora.gipcd’ on ‘node1’
CRS-2677: Stop of ‘ora.gipcd’ on ‘node1’ succeeded
CRS-2673: Attempting to stop ‘ora.mdnsd’ on ‘node1’
CRS-2677: Stop of ‘ora.mdnsd’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.mdnsd’ on ‘node1’
CRS-2676: Start of ‘ora.mdnsd’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.gipcd’ on ‘node1’
CRS-2676: Start of ‘ora.gipcd’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.gpnpd’ on ‘node1’
CRS-2676: Start of ‘ora.gpnpd’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.cssdmonitor’ on ‘node1’
CRS-2676: Start of ‘ora.cssdmonitor’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.cssd’ on ‘node1’
CRS-2672: Attempting to start ‘ora.diskmon’ on ‘node1’
CRS-2676: Start of ‘ora.diskmon’ on ‘node1’ succeeded
CRS-2676: Start of ‘ora.cssd’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.ctssd’ on ‘node1’
CRS-2676: Start of ‘ora.ctssd’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.asm’ on ‘node1’
CRS-2676: Start of ‘ora.asm’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.crsd’ on ‘node1’
CRS-2676: Start of ‘ora.crsd’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.evmd’ on ‘node1’
CRS-2676: Start of ‘ora.evmd’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.asm’ on ‘node1’
CRS-2676: Start of ‘ora.asm’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.CRS.dg’ on ‘node1’
CRS-2676: Start of ‘ora.CRS.dg’ on ‘node1’ succeeded
CRS-2672: Attempting to start ‘ora.registry.acfs’ on ‘node1’
CRS-2676: Start of ‘ora.registry.acfs’ on ‘node1’ succeeded

node1     2012/09/04 15:08:38     /u01/app/11.2.0/grid/cdata/node1/backup_20120904_150838.olr
Preparing packages for installation…
ls: /usr/sbin/smartctl: No such file or directory
/usr/sbin/smartctl not found.
error: %pre(cvuqdisk-1.0.7-1.x86_64) scriptlet failed, exit status 1
error:   install: %pre scriptlet failed (2), skipping cvuqdisk-1.0.7-1
Configure Oracle Grid Infrastructure for a Cluster … succeeded
Updating inventory properties for clusterware
Starting Oracle Universal Installer…

Checking swap space: must be greater than 500 MB.   Actual 4095 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
‘UpdateNodeList’ was successful.

If script execution was unsuccessful, then you are able to de-configure it by the following way(if script was successfully run then skip this step ):

[root@node1 ~] cd /u01/app/11.2.0/grid/crs/install
[root@node1 install]# perl rootcrs.pl -deconfig -force

From node2:

[root@node2 ~]# /u01/app/11.2.0/grid/root.sh

….

Click OK.

SCAN verification failed because we are not using DNS.

Check cluster status for both nodes:

[grid@node1 ~]$ crsctl check cluster -all
**************************************************************
node1:
CRS-4537: Cluster Ready Services is online
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online
**************************************************************
node2:
CRS-4537: Cluster Ready Services is online
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online
**************************************************************

[grid@node1 ~]$ olsnodes
node1
node2

[grid@node1 ~]$ crs_stat -t -v
Name           Type           R/RA   F/FT   Target    State     Host
———————————————————————-
ora.CRS.dg     ora….up.type 0/5    0/     ONLINE    ONLINE    node1
ora….ER.lsnr ora….er.type 0/5    0/     ONLINE    ONLINE    node1
ora….N1.lsnr ora….er.type 0/5    0/0    ONLINE    ONLINE    node1
ora.asm        ora.asm.type   0/5    0/     ONLINE    ONLINE    node1
ora.eons       ora.eons.type  0/3    0/     ONLINE    ONLINE    node1
ora.gsd        ora.gsd.type   0/5    0/     OFFLINE   OFFLINE
ora….network ora….rk.type 0/5    0/     ONLINE    ONLINE    node1
ora….SM1.asm application    0/5    0/0    ONLINE    ONLINE    node1
ora….E1.lsnr application    0/5    0/0    ONLINE    ONLINE    node1
ora.node1.gsd  application    0/5    0/0    OFFLINE   OFFLINE
ora.node1.ons  application    0/3    0/0    ONLINE    ONLINE    node1
ora.node1.vip  ora….t1.type 0/0    0/0    ONLINE    ONLINE    node1
ora….SM2.asm application    0/5    0/0    ONLINE    ONLINE    node2
ora….E2.lsnr application    0/5    0/0    ONLINE    ONLINE    node2
ora.node2.gsd  application    0/5    0/0    OFFLINE   OFFLINE
ora.node2.ons  application    0/3    0/0    ONLINE    ONLINE    node2
ora.node2.vip  ora….t1.type 0/0    0/0    ONLINE    ONLINE    node2
ora.oc4j       ora.oc4j.type  0/5    0/0    OFFLINE   OFFLINE
ora.ons        ora.ons.type   0/3    0/     ONLINE    ONLINE    node1
ora….ry.acfs ora….fs.type 0/5    0/     ONLINE    ONLINE    node1
ora.scan1.vip  ora….ip.type 0/0    0/0    ONLINE    ONLINE    node1

Run asmca to create DATA diskgroup:

[grid@node1 ~]$  asmca

Click Create.

Click Exit.

2.4 Oracle Database Installation

Connect as an oracle user.

Download Link: http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html?ssSourceSiteId=ocomen

Unzip downloaded file to /home/oracle/myinstall.

[oracle@node1 linux.x64_11gR2_database]$ ./runInstaller

Click Yes.

After DBCA completes its job, there will appear the following window:

From node1:

[oracle@node1 orcl]$ su –
Password:
[root@node1 ~]# /u01/app/oracle/product/11.2.0/db_1/root.sh
Running Oracle 11g root.sh script…

The following environment variables are set as:
ORACLE_OWNER= oracle
ORACLE_HOME=  /u01/app/oracle/product/11.2.0/db_1

Enter the full pathname of the local bin directory: [/usr/local/bin]:
The file “dbhome” already exists in /usr/local/bin.  Overwrite it? (y/n)
[n]: y
   Copying dbhome to /usr/local/bin …
The file “oraenv” already exists in /usr/local/bin.  Overwrite it? (y/n)
[n]: y
Copying oraenv to /usr/local/bin …
The file “coraenv” already exists in /usr/local/bin.  Overwrite it? (y/n)
[n]: y
Copying coraenv to /usr/local/bin …

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.sh script.
Now product-specific root actions will be performed.
Finished product-specific root actions.

From node2:

[root@node2 ~]# /u01/app/oracle/product/11.2.0/db_1/root.sh
Running Oracle 11g root.sh script…

The following environment variables are set as:
ORACLE_OWNER= oracle
ORACLE_HOME=  /u01/app/oracle/product/11.2.0/db_1

Enter the full pathname of the local bin directory: [/usr/local/bin]:
The file “dbhome” already exists in /usr/local/bin.  Overwrite it? (y/n)
[n]: y
Copying dbhome to /usr/local/bin …
The file “oraenv” already exists in /usr/local/bin.  Overwrite it? (y/n)
[n]: y
Copying oraenv to /usr/local/bin …
The file “coraenv” already exists in /usr/local/bin.  Overwrite it? (y/n)
[n]: y

Copying coraenv to /usr/local/bin …

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.sh script.
Now product-specific root actions will be performed.
Finished product-specific root actions.

To check:

From node1:

[oracle@node1 ~]$ echo $ORACLE_SID
orcl1
[oracle@node1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Tue Sep 4 18:26:10 2012

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 – 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

SQL> select instance_name from v$instance;

INSTANCE_NAME
—————-
orcl1

SQL> create table test(a number);

Table created.

SQL> insert into test values(1);

1 row created.

SQL> commit;

Commit complete.

From node2:

[oracle@node2 ~]$ echo $ORACLE_SID
orcl2
[oracle@node2 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Tue Sep 4 18:29:49 2012

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 – 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

SQL> select instance_name from v$instance;

INSTANCE_NAME
—————-
orcl2

SQL> select * from test;

A
———-
1

Good Luck!