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RTC Eclipse Client Startup Error on RHEL Workstation

I have just downloaded the plain .zip files for RTC Eclipse Clients of versions : 5.0.1 & 4.0.2. Both of them fails with below error messages :
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Error logged from Process Client UI:
No more handles [MOZILLA_FIVE_HOME='/usr/lib/xulrunner-compat'] (java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
/home/mkandala/RTC_402/client/eclipse/configuration/org.eclipse.osgi/bundles/501/1/.cp/libswt-mozilla-gtk-3659.so (libxpcom.so: cannot open shared object file: No such file or directory)
swt-mozilla-gtk (Not found in java.library.path)
/tmp/swtlib-32/libswt-mozilla-gtk-3659.so (libxpcom.so: cannot open shared object file: No such file or directory)
/tmp/swtlib-32/libswt-mozilla-gtk.so (/tmp/swtlib-32/liblibswt-mozilla-gtk.so.so: cannot open shared object file: No such file or directory)
)
Please advice.
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Error logged from Process Client UI:
No more handles [MOZILLA_FIVE_HOME='/usr/lib/xulrunner-compat'] (java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
/home/mkandala/RTC_402/client/eclipse/configuration/org.eclipse.osgi/bundles/501/1/.cp/libswt-mozilla-gtk-3659.so (libxpcom.so: cannot open shared object file: No such file or directory)
swt-mozilla-gtk (Not found in java.library.path)
/tmp/swtlib-32/libswt-mozilla-gtk-3659.so (libxpcom.so: cannot open shared object file: No such file or directory)
/tmp/swtlib-32/libswt-mozilla-gtk.so (/tmp/swtlib-32/liblibswt-mozilla-gtk.so.so: cannot open shared object file: No such file or directory)
)
Please advice.
Accepted answer

Thank you Ralph for taking time to help me.
This document helped : https://jazz.net/library/article/952 for 5.0.1 and still working on 4.0.2 Solution
Here are the steps for RTC 5.0.1 on RHEL 64 bit system:
For Rational Team Concert 4.x on 64-bit Linux:
This document helped : https://jazz.net/library/article/952 for 5.0.1 and still working on 4.0.2 Solution
Here are the steps for RTC 5.0.1 on RHEL 64 bit system:
For Rational Team Concert 4.x on 64-bit Linux:
- Install a webkitgtk+ 1.2.x package on the system.
-
Update your eclipse.ini, so that Eclipse uses webkitgtk, by adding a line similar to the following to the vmargs:
- Add -Dorg.eclipse.swt.browser.UseWebKitGTK=true to the vmargs in the eclipse.ini, or install with eclipse 3.7.2+
2 other answers

Increase number of file handles.
Comments

Thank you for the response.
Is it not related to XULRUNNER ? How to increase the no of file handles ?

Could also be related to xulrunner. Not sure. for xulrunner related questions and answers see
https://www.google.com/search?q=rhel+xulrunner+site:jazz.net
There are several answers that provide hints how to solve this.
For how to increase file handles have a look at
https://www.google.com/search?q=redhat+increase+file+handles
You should probably try the xulrunner related tips first.