RAC Attack - Oracle Cluster Database at Home/RAC Attack 12c/Linux Post Installation No Internet

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  1. To connect to the new created virtual machine, create a connection in Putty for the new VM called collabn1 with the IP Address of

    • Optionally, create another connection for collabn2 with the IP Address of that will be created later as a clone of collabn1.

    Putty connection screen

  2. Open the collabn1 connection by clicking Open.
    • Click Yes on the Security Alert dialog box.

    Putty security alert

  3. Enter root at the login as: prompt and racattack at the password: prompt.

    Putty connected

  4. Turn off and disable the firewall IPTables.

    [root@collabn1 ~]# service iptables stop
    iptables: Flushing firewall rules:                         [  OK  ]
    iptables: Setting chains to policy ACCEPT: filter          [  OK  ]
    iptables: Unloading modules:                               [  OK  ]
    [root@collabn1 ~]# chkconfig iptables off
    [root@collabn1 ~]# chkconfig --list iptables
    iptables        0:off   1:off   2:off   3:off   4:off   5:off   6:off
  5. Disable SELinux. Open the config file and change the SELINUX variable from enforcing to disabled.
    [root@collabn1 ~]# vim /etc/selinux/config
     # This file controls the state of SELinux on the system.
     # SELINUX= can take one of these three values:
     #     enforcing - SELinux security policy is enforced.
     #     permissive - SELinux prints warnings instead of enforcing.
     #     disabled - No SELinux policy is loaded.
     # SELINUXTYPE= can take one of these two values:
     #     targeted - Targeted processes are protected,
     #     mls - Multi Level Security protection.
  6. Verify that all the network interfaces are up.
    [root@collabn1 ~]# ip l
    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
        link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
        link/ether 08:00:27:4f:8a:0b brd ff:ff:ff:ff:ff:ff
    3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
        link/ether 08:00:27:99:7e:95 brd ff:ff:ff:ff:ff:ff
    4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
        link/ether 08:00:27:e2:63:7f brd ff:ff:ff:ff:ff:ff

  7. Add the DVD as repository.

    Go to the VBOX menu => Storage => Add the DVD device to the server Device -> CD/DVD Devices -> Oracle_Linux_6_4.iso

    Run the following commands:

    mkdir /media/cdrom
    mount /dev/cdrom /media/cdrom/
    cd /etc/yum.repos.d
    mkdir /tmp/old.yum.repos.d
    mv * /tmp/old.yum.repos.d
    cat <<EOF > ol64.repo
    name=Oracle Linux 6.4 x86_64
  8. Install the database preinstall package oracle-rdbms-server-11gR2-preinstall.
    • This package installs all the package requirements for Oracle 11g (but will work also for 12c), configures kernel parameters, creates oracle user and groups and sets the user limits.
    [root@collabn1 ~]# yum install -y oracle-rdbms-server-11gR2-preinstall
    Transaction Summary
    Install      21 Package(s)
    Upgrade       2 Package(s)
    Total download size: 43 M
      oracle-rdbms-server-11gR2-preinstall.x86_64 0:1.0-8.el6
  9. Install additional RPMs that will be used to install and administer the servers.
    [root@collabn1 ~]# rpm -ivh /media/cdrom/Packages/kernel-uek-devel-$(uname -r).rpm
    [root@collabn1 ~]# yum install -y tigervnc-server.x86_64 xclock man parted.x86_64 unzip.x86_64 xterm lsof bind  xorg-x11-twm
    Install      12 Package(s)
    Total download size: 22 M
  10. Uninstall NTP.
    [root@collabn1 ~]# yum remove -y ntp
     ntp.x86_64 0:4.2.4p8-3.el6
  11. Unmount the DVD before continuing with the next steps.
    [root@collabn1 ~]# umount /media/cdrom