| Building Oracle RAC Part II , Install virtual disk and network card
| Thursday, July 12, 2007
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|This is Part II of Step by Step RAC configuration on your laptop/desktop without investing anything extra on hardware (Free) using virtual server, virtual hard disk and virtual network cards.
For first two posts visit
Try installing Orcale RAC on your laptop
RAC Part I - Install Virtual Machine and Linux
In this Part II, We will install required linux operating package for clusterware & database, additional hard disk (voting disk, ocr and ASM), network card for interconnect and configure newly added hard disk and network card.
Install following rpm’s (These rpm’s are in Red Hat ES CD’s or download them from rhn.redhat.com ) and install them using root account
(compat-glibc-7.x-126.96.36.199.6.i386.rpm, gnome-libs-188.8.131.52.90-34.2.i386.rpm, sysstat-4.0.7-4.EL3.3.i386.rpm )
rpm –ivh compat-glibc-7.x-184.108.40.206.6.i386.rpm
rpm –ivh gnome-libs-220.127.116.11.90-34.2.i386.rpm
rpm –ivh sysstat-4.0.7-4.EL3.3.i386.rpm
Create Shared Disk on Virtual Machine for Cluster Registry, Voting Disk and ASM
--Shutdown linux machine RAC1 (installed in part I) as “shutdown now” (from root user)
--Create folder “shared” in location “c:\atul\VMWARE” (or any other location of your choice)
--From VM Ware Console Press Ctrl + D to see Virtual Machine Settings
Or from screen
Click on Edit Virtual Machine Setting
Click on Add
Click on Next
Select Hard Disk
as shown here and click Next
Select Create a New Virtual Disk
and click Next
and click Next
Select 5.0 GB for voting disk
and 5.0 GB for ocr
(add second disk of 5 GB for ocr
using same method) and 8 GB for asm (add third disk of 8 GB for ASM
using same method)
Enter location and disk file name in folder shared
Note* Select votingDisk for disk one created , ocr for second disk created and asm for third disk created . This name doesn't matter and this is for our understanding only.
Repeat above step of adding disk for ocr and asm. Finally you should see Hard Disk 2,3,4
Hard Disk 2 : for votingDisk (5 GB)
Hard Disk 3 : for ocr (5 GB)
Hard Disk 4 : for ASM (8GB)
This completes addition of hard disk (How to configure and share these hard disks coming next ..)
Adding Network Card for Interconnect
Next step is to create network card, there is already an existing network card which is used as public connection for connecting to this machine and database isnatance on this machine and new card will be used oracle clusterware as private inerconnect between two nodes of RAC i.e. RAC1 and RAC2. This private interconnect is used for clusterware talking to all remote nodes in cluster.
From VMWare Console press Ctrl + D
Select Ethernet Adapter
this time and click Next
and click Finish
Now Start your linux Virtual Machine
On start of linux Virtual Machine you linux machine will detect newly added network card which you can configure now (at boot time only) or you can configure later as well.
Press Any Key
to enter into setup part of network card
and click enetr or you can configure it later as well
Enter following details
IP Address -----------------192.168.0.101
Netmask ------------------- 255.255.255.0
Default Gateway --------- 192.168.0.254
Primary Nameserver ---- 192.168.0.1
and select OK
and press enter
Login as Root User when prompted to login
Above we configured newly added network card eth1 (used for interconnect).
With below method we will
configure original network card (for public connection)
Syetem Setting -> Network
and click Edit
Add entry like
255.255.255.0Default Gateway Address
Click OK and activate this netowrk card
by clicking on Activate
Click on Yes,
when prompted to save network configuration
Now you should see both network card eth0 and eth1 as Active
, from root should show you result as shown in screenshot
Format and Configure Virtual disks (voting disk, ocr and asm )
In this step We will format and configure Virtual Disks created above.
From user root
fdisk –l (This is to see list of disks, You will see entry like /dev/sdb, /dev/sdc, /dev/sdd doesn’t contain valid partition table)
fdisk /dev/sdb (Means we are dealing with /dev/sdb)
n (Create new disk)
p (Of type primary partition)
1 (First Cylinder)
Enter (carriage return)
Enter (carriage return)
w (Save table to disk and exit)
(For more information check man fdisk or below screenshot)
Repeat above step for /dev/sdc and /dev/sdd
So now fdisk –l you should details of /dev/sdb, dev/sdc, dev/sdd
--Add These disks as raw devices in file /etc/sysconfig/rawdevices as
--Restart rawdevices service as service rawdevices restart
Create directory /apps/oracle/oradata (For storing voting disk, ocr and ASM) as
mkdir –p /apps/oracle/oradata (From Root Account)
-->Create symbolic link pointing to these raw devices so that we know which one is for what (Optional)
ln –s /dev/raw/raw1 /apps/oracle/oradata/ocr
ln –s /dev/raw/raw2 /apps/oracle/oradata/votingdisk
ln –s /dev/raw/raw3 /apps/oracle/oradata/asm
--Change ownership of these directories to oracle:oracle
chown oracle:oracle /dev/raw/raw1
chown oracle:oracle /dev/raw/raw2
chown oracle:oracle /dev/raw/raw3
Shutdown this machine as this is now ready to clone and to create RAC2 machine.
-Cloning RAC1 to RAC2
-Changing RAC2 network and hostname details
-Configuring user equivalency
-Installing clusterware 10.2.0.1
-Installing Oracle rac database 10.2.0.1
-Tips and Tricks of troubleshooting Oracle RAC Database and clusterware.....
Labels: database, RAC
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Leave Your Comments
|posted by Atul Kumar @ 11:52 PM
nice post keep them up
I accidently stumbled upon your blog and I was stunned to see the amount of clarity and simplicity you put in your posts.
Kudos to you for making a complex thing as RAC sound so easy with your screenshots and instructions.
Keep up the good work.
Thanks for such a Nice compliment :)
nice post, i'm learn new thinks.. If possible vmware config. in suse linux 9.3
Hi Babu, Follow same steps in suse 9 and update here if you hit some issues
First I would I like to thanks for the excellent post.
I m following up with your blog and learning lot of things.
I m using RHAS3 instead of Red Hat Linux ES 3. Found following 3 rpm are dependencies for 3 rpm files mentioned in the post:
Hi Vamasi ,
Thanks for sharing this information with readers. If you install package list as mentioned in RedHat install in previous doc these rpm's will authomatically be installed
Is it mandatory to go with SCSI? or can we create hard disks for votingdisk,ocr using IDE.I am trying to configure RAC on VM. but got stuked here.
SCSI is not requirement you can try with IDE as well but I SCSI is recommended.
Actually you don't need the voting disk to be 5GB, do you? 512M is enough?
Yes this is right that we don't need voting disk of 5 GB and 250 MB is enough. Extra Hard disk if you need more voting disk but still I think 5 GB is too much may be 1 GB is more than enough
Thanks for you prompt reply. It is like get authorization from the guru. will use 250MB for my implementation.
I am trying to install 10gR2c on my laptop using VMware.
But I always stuk in last while installing clusterware.
When I run root.sh . It showd me " Failure to upgrade Oracle Cluster registry ......"
I tried to check on internet but didn't get any help regarding that.
please help me
Further please let me know is 1Gm ram is enough for installation or not.
hi atul ,
great job dear , actually i m working with solaris 9 os platform . can i use same step for solaris 9 os . please comment .
This is great work. I do have question. I tries to create 4 hard drives for linux os, ocr, voting disk and asm. I created them as IDE not scsi. The last one created as scsi and I couldn’t partition it because I couldn’t see it when I use fdisk –l. any idea. Thanks again
Really a nice work to spread knowledge.
As I am going with above installation.. I got a problem, that when I tried to edit the settings of virtual machine.. I clicked on memory option.. But unfortunately button to "Add" is not enabled :(
Any Idea about this??
i don't know what to say to u
Atul Kumar ,just continue and keep
impress us with your nice tutorial
Configure Virtual Shared Storage
During my first Linux boot process , the O/S detect the new SCSI adaptor When prompted,i hit a key to continue.
This will bring up the [Hardware Added] screen for the LSI Logic Ultra320 SCSI adaptor.
and i selected the [Configure] button to register the new SCSI adaptor.
But when i rebooted both of my virtual hosts(vmlinux1 and vmlinux2) for the second time, it is not asking me to configure.
Configuration is a one time task or need to be carried for all the reboots?
Thanks and Regards,