Display error comming at the tme of running runInstaller

Dear Sir,
Actually I am trying to install the Standalone forms and Reports Services (10.1.2.0.2) on RHEL5.
In this regard whenever I am trying to run runInstaler it is showing the following error:
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[oracle@tcs01hw181856 Disk1]$ ./runInstaller PREREQ_CONFIG_LOCATION=/oracle/app/oracle/dump/10.1.2.0.2/prereq/ -paramFile /oracle/app/oracle/dump/10.1.2.0.2/oraparam.ini

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The OUI Screen may take around 5 to 30 seconds to come up depending upon system performance. Please Wait .......
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Starting Oracle Universal Installer...

Checking installer requirements...

Checking operating system version: must be redhat-2.1, redhat-3, redhat-4, redhat-5, SuSE-8, SuSE-9 or UnitedLinux-1.0
                                      Passed


All installer requirements met.

Checking Temp space: must be greater than 400 MB.   Actual 3832 MB    Passed
Checking swap space: must be greater than 1536 MB.   Actual 8001MB    Passed
Checking monitor: must be configured to display at least 256 colors    Failed <<<<
    >>> Could not execute auto check for display colors using command /usr/X11R6/bin/xdpyinfo. Check if the DISPLAY variable is set.
Checking if CPU speed is above 450 MHz.    Actual 1995 MHz    Passed

Some optional pre-requisite checks have failed (see above). Continue? (y/n) [n] n

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I am waiting for your solution.
Thanks and Regards
SaptadipStart Free Trial