Ошибка установки Oracle 11gR2 на Ubuntu 14.04 32 бита

Я пытаюсь установить Oracle 11gR2 на мою машину с Ubuntu. Я пробовал этот урок Установить Oracle Database 11gR2 в Ubuntu 12.04

, когда я запускаю установщик, запустив ./runInstaller Я получаю эту ошибку

Starting Oracle Universal Installer...

    Checking Temp space: must be greater than 80 MB.   Actual 307621 MB    Passed
    Checking swap space: must be greater than 150 MB.   Actual 47682 MB    Passed
    Checking monitor: must be configured to display at least 256 colors
        >>> Could not execute auto check for display colors using command /usr/bin/xdpyinfo. Check if the DISPLAY variable is set.    Failed <<<<

Some requirement checks failed. You must fulfill these requirements before

continuing with the installation,

Continue? (y/n) [n] y


>>> Ignoring required pre-requisite failures. Continuing...

Preparing to launch Oracle Universal Installer from 



      /tmp/OraInstall2015-06-08_11-46-03AM. Please wait ...oracle@Linux-14:~/database$ No protocol specified



    Exception in thread "main" java.lang.NoClassDefFoundError
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:164)
        at java.awt.Toolkit$2.run(Toolkit.java:821)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:804)
        at com.jgoodies.looks.LookUtils.isLowResolution(Unknown Source)
        at com.jgoodies.looks.LookUtils.<clinit>(Unknown Source)
        at com.jgoodies.looks.plastic.PlasticLookAndFeel.<clinit>(PlasticLookAndFeel.java:122)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:242)
        at javax.swing.SwingUtilities.loadSystemClass(SwingUtilities.java:1783)
        at javax.swing.UIManager.setLookAndFeel(UIManager.java:480)
        at oracle.install.commons.util.Application.startup(Application.java:758)
        at oracle.install.commons.flow.FlowApplication.startup(FlowApplication.java:164)
        at oracle.install.commons.flow.FlowApplication.startup(FlowApplication.java:181)
        at oracle.install.commons.base.driver.common.Installer.startup(Installer.java:265)
        at oracle.install.ivw.db.driver.DBInstaller.startup(DBInstaller.java:114)
        at oracle.install.ivw.db.driver.DBInstaller.main(DBInstaller.java:132)

Может кто-нибудь помочь мне в этой проблеме? Спасибо.