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  • We have moved to kindly check http://onlineAppsDBA.comin future
    Building Oracle RAC Part II , Install virtual disk and network card
    Thursday, July 12, 2007
    Register for R12 upgrade
    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 rpm’s

    Install following rpm’s (These rpm’s are in Red Hat ES CD’s or download them from ) and install them using root account

    (compat-glibc-7.x-, gnome-libs-, sysstat-4.0.7-4.EL3.3.i386.rpm )

    rpm –ivh compat-glibc-7.x-
    rpm –ivh gnome-libs-
    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

    Select SCSI 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 created above.
    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.
    Click Finish

    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

    Select Bridged 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

    Select Configure and click enetr or you can configure it later as well

    Enter following details
    IP Address -----------------
    Netmask -------------------
    Default Gateway ---------
    Primary Nameserver ----

    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

    select eth0 and click Edit

    Add entry like
    Subnet Mask
    Default Gateway Address

    Click OK and activate this netowrk card

    Activate eth0 by clicking on Activate button

    Click on Yes, when prompted to save network configuration

    Now you should see both network card eth0 and eth1 as Active

    ifconfig , 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
    /dev/raw/raw1 /dev/sdb1
    /dev/raw/raw2 /dev/sdc1
    /dev/raw/raw3 /dev/sdd1
    --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.
    Coming Next
    -Cloning RAC1 to RAC2
    -Changing RAC2 network and hostname details
    -Configuring user equivalency
    -Installing clusterware
    -Installing Oracle rac database
    -Tips and Tricks of troubleshooting Oracle RAC Database and clusterware.....

    Labels: ,

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    kindly check in future

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    posted by Atul Kumar @ 11:52 PM  
    • At 11:30 AM, Blogger fhasweh said…

      nice post keep them up

    • At 11:58 AM, Blogger Atul Kumar said…

      Thanks Fadi.

    • At 12:36 AM, Blogger Alok said…

      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.

    • At 12:45 AM, Blogger Atul Kumar said…

      Hi Alok,
      Thanks for such a Nice compliment :)

    • At 6:46 AM, Blogger Babu B said…

      Hi kumar,

      nice post, i'm learn new thinks.. If possible vmware config. in suse linux 9.3


    • At 10:29 AM, Blogger Atul Kumar said…

      Hi Babu, Follow same steps in suse 9 and update here if you hit some issues

    • At 12:18 PM, Blogger Vamsi Chikkam said…

      Hi Atul,

      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:

      1) gnome-libs-
      2) libpng10-1.0.13-8.i386.rpm
      3) ORBit-0.5.17-10.4.i386.rpm

      Vamsi Chikkam

    • At 3:03 PM, Blogger Atul Kumar said…

      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

    • At 8:15 AM, Anonymous Anonymous said…


      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.


    • At 9:50 AM, Blogger Atul Kumar said…

      SCSI is not requirement you can try with IDE as well but I SCSI is recommended.

    • At 7:12 PM, Anonymous Anonymous said…

      Actually you don't need the voting disk to be 5GB, do you? 512M is enough?

    • At 8:25 PM, Blogger Atul Kumar said…

      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

    • At 9:04 PM, Anonymous Anonymous said…

      Thanks for you prompt reply. It is like get authorization from the guru. will use 250MB for my implementation.

    • At 5:53 PM, Anonymous Anonymous said…

      Hi Atual,

      I am trying to install 10gR2c on my laptop using VMware.
      But I always stuk in last while installing clusterware.
      When I run . 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.

    • At 6:01 PM, Blogger Atul Kumar said…

      This comment has been removed by the author.

    • At 6:50 PM, Blogger Atul Kumar said…

    • At 10:06 AM, Anonymous Anonymous said…

      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 .

    • At 1:06 AM, Anonymous Anonymous said…

      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

    • At 12:16 PM, Anonymous Abhishek said…

      Hi Atul,

      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??


    • At 7:13 PM, Anonymous Anonymous said…

      i don't know what to say to u
      Atul Kumar ,just continue and keep
      impress us with your nice tutorial


    • At 6:14 PM, Blogger SATISH.G.S said…

      Hi Atul,

      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.

      My question:

      Configuration is a one time task or need to be carried for all the reboots?

      Thanks and Regards,

    Post a Comment
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