Why does oracle installer throw error messages "libXp.so.6: cannot open shared object file" ?

Issue

• Found following messages during installing oracle 10.2.0.1

[oracle@server]$ ./runInstaller -ignoreSysPrereqs
Starting Oracle Universal Installer...
Checking installer requirements...Checking operating system version: must be redhat-3, SuSE-9, redhat-4, UnitedLin
ux-1.0, asianux-1 or asianux-2
                                      Passed

All installer requirements met.
Preparing to launch Oracle Universal Installer from /tmp/OraInstall2011-08-23_01
-47-50PM. Please wait ...
[oracle@]$ Oracle Universal Installer, Version 10.2.0.1.0 Production
Copyright (C) 1999, 2005, Oracle. All rights reserved.
Exception java.lang.UnsatisfiedLinkError: /tmp/OraInstall2011-08-23_01-47-50PM/jre/1.4.2/lib/i386/libawt.so: libXp.so.6: cannot open shared object file: No such file or directory occurred..
java.lang.UnsatisfiedLinkError: /tmp/OraInstall2011-08-23_01-47-50PM/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.<clinit>(Unknown Source)
        at java.awt.Component.<clinit>(Unknown Source)
        at oracle.sysman.oii.oiif.oiifm.OiifmGraphicInterfaceManager.<init>(OiifmGraphicInterfaceManager.java:222)
        at oracle.sysman.oii.oiic.OiicSessionInterfaceManager.createInterfaceManager(OiicSessionInterfaceManager.java:193)
        at oracle.sysman.oii.oiic.OiicSessionInterfaceManager.getInterfaceManager(OiicSessionInterfaceManager.java:202)
        at oracle.sysman.oii.oiic.OiicInstaller.getInterfaceManager(OiicInstaller.java:436)
        at oracle.sysman.oii.oiic.OiicInstaller.runInstaller(OiicInstaller.java:926)
        at oracle.sysman.oii.oiic.OiicInstaller.main(OiicInstaller.java:866)
Exception in thread "main" java.lang.NoClassDefFoundError
        at oracle.sysman.oii.oiif.oiifm.OiifmGraphicInterfaceManager.<init>(OiifmGraphicInterfaceManager.java:222)
        at oracle.sysman.oii.oiic.OiicSessionInterfaceManager.createInterfaceManager(OiicSessionInterfaceManager.java:193)
        at oracle.sysman.oii.oiic.OiicSessionInterfaceManager.getInterfaceManager(OiicSessionInterfaceManager.java:202)
        at oracle.sysman.oii.oiif.oiifm.OiifmAlert.<clinit>(OiifmAlert.java:151)
        at oracle.sysman.oii.oiic.OiicInstaller.runInstaller(OiicInstaller.java:984)
        at oracle.sysman.oii.oiic.OiicInstaller.main(OiicInstaller.java:866)