Oracle Universal Installer (OUI) Initialization Error on Oracle Enterprise Linux 5 (OEL5)

I ran into the following problem after a fresh install of Oracle Enterprise Linux 5 when starting the Oracle Universal Installer to install Oracle Enterprise Manager.

[oracle@ogre Disk1]$ ./runInstaller 
Starting Oracle Universal Installer...

Checking installer requirements...

Checking operating system version: must be enterprise-4, enterprise-5, redhat-3,
redhat-4, redhat-5, redhat-5.1, SuSE-9, SuSE-10, UnitedLinux-1.0, asianux-1 or
asianux-2
                                      Passed


All installer requirements met.

Preparing to launch Oracle Universal Installer from /tmp/OraInstall2010-04-15_04-43-50PM. Please wait ...
[oracle@ogre Disk1]$ 
Exception in thread "main" java.lang.UnsatisfiedLinkError:
/tmp/OraInstall2010-04-15_04-43-50PM/jre/1.4.2/lib/i386/libawt.so: libXp.so.6:
cannot open shared object file: No such file or directory
        at java.lang.ClassLoader$NativeLibrary.load(Native Method)
        at java.lang.ClassLoader.loadLibrary0(Unknown Source)
        at java.lang.ClassLoader.loadLibrary(Unknown Source)
        at java.lang.Runtime.loadLibrary0(Unknown Source)
        at java.lang.System.loadLibrary(Unknown Source)
        at sun.security.action.LoadLibraryAction.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.awt.NativeLibLoader.loadLibraries(Unknown Source)
        at sun.awt.DebugHelper.(Unknown Source)
        at java.awt.Component.(Unknown Source)
        at oracle.sysman.emgc.oneclick.OneClickWizard.getGuiDefaults(OneClickWizard.java:239)
        at oracle.sysman.emgc.oneclick.OneClickWizard.(OneClickWizard.java:205)
        at oracle.sysman.emgc.oneclick.OneClick.(OneClick.java:230)
        at oracle.sysman.emgc.oneclick.OneClickInstaller.(OneClickInstaller.java:116)
        at oracle.sysman.emgc.oneclick.OneClickInstaller.process(OneClickInstaller.java:268)
        at oracle.sysman.emgc.oneclick.OneStartup.startup(OneStartup.java:359)
        at oracle.sysman.emgc.oneclick.OneArgs.main(OneArgs.java:650)
        at oracle.sysman.emgc.oneclick.OneStartup.main(OneStartup.java:367)

[oracle@ogre Disk1]$

The problem is that the i386 version of the libXp package is missing and is not installed by default in Oracle Enterprise Linux 5. Run the following command to confirm the package is missing.

[root@ogre Server]# rpm -qa --queryformat "%{NAME}-%{VERSION}-%{RELEASE}(%{ARCH})\n" | grep libXp
libXpm-3.5.5-3(i386)
libXp-devel-1.0.0-8.1.el5(x86_64)
libXpm-3.5.5-3(x86_64)
libXpm-devel-3.5.5-3(x86_64)
libXp-1.0.0-8.1.el5(x86_64)

Navigate to the Oracle Enterprise Linux 5 media and install the package manually.

[root@ogre Server]# pwd
/media/Enterprise Linux dvd 20090908/Server
[root@ogre Server]# ls libXp*
libXp-1.0.0-8.1.el5.i386.rpm        libXp-devel-1.0.0-8.1.el5.x86_64.rpm  libXpm-devel-3.5.5-3.i386.rpm
libXp-1.0.0-8.1.el5.x86_64.rpm      libXpm-3.5.5-3.i386.rpm               libXpm-devel-3.5.5-3.x86_64.rpm
libXp-devel-1.0.0-8.1.el5.i386.rpm  libXpm-3.5.5-3.x86_64.rpm
[root@ogre Server]# rpm -ivh ./libXp-1.0.0-8.1.el5.i386.rpm 
warning: ./libXp-1.0.0-8.1.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing...                ########################################### [100%]
   1:libXp                  ########################################### [100%]
[root@ogre Server]# rpm -qa --queryformat "%{NAME}-%{VERSION}-%{RELEASE}(%{ARCH})\n" | grep libXp
libXpm-3.5.5-3(i386)
libXp-devel-1.0.0-8.1.el5(x86_64)
libXp-1.0.0-8.1.el5(i386)
libXpm-3.5.5-3(x86_64)
libXpm-devel-3.5.5-3(x86_64)
libXp-1.0.0-8.1.el5(x86_64)
[root@ogre Server]#