Last modified on 5 April 2013, at 05:10

RAC Attack - Oracle Cluster Database at Home/Configure Disks


  1. In the Inventory tab at the left, select collabn1.
    RA-vmweb-collabn1-only.png
  2. Choose the Console tab. Click on the play button to start the VM. When you see the square boxes, click anywhere to open a console window.

    RA-vmweb-collabn1-only-console.png
  3. Login as the oracle user with the password racattack.

    RA-oel-login-oracle.png
  4. Open a terminal window.

    RA-oel-menu-terminal.png
  5. Switch to the root user with the "su -" command. (The password is racattack.) CONFIRM that two new disks exist and that they have the appropriate sizes. These two lines should exactly match!!

    [root@collabn1 ~]# cat /proc/partitions
    major minor  #blocks  name
    ...
       8    16    3407872 sdb
       8    32    3407872 sdc
    
  6. Create partitions on all of the newly created disks with fdisk.

    1. run fdisk /dev/sdb You should see the message "Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel"
    2. type "n" to create a new partition.
    3. type "p" for a primary partition.
    4. type partition number 1.
    5. press enter twice to accept the default first/last cylinders.
    6. type "t" to set the partition type.
    7. enter partition type da (Non-FS data).
    8. type "w" to write the partition table to disk.
    [root@collabn1 ~]# fdisk /dev/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.
    
    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 (1-652, default 1): ^M  [default]
    Using default value 1
    Last cylinder or +size or +sizeM or +sizeK (1-652, default 652): ^M  [default]
    Using default value 652
    
    Command (m for help): t
    Selected partition 1
    Hex code (type L to list codes): da
    Changed system type of partition 1 to da (Non-FS data)
    
    Command (m for help): w
    The partition table has been altered!
    
    WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
    The kernel still uses the old table.
    Syncing disks.
    
  7. Repeat the previous step for disk /dev/sdc