Hi Tashi & Katrice,
Finally, I found a solution to the issue after striving through all the time. The core pain to the problem was custom CSS that I applied to the web dynpro application using the code, altering the URL. That causes web dynpro application to reload several times.
As a part of solution, I, then assigned CSS, to application by maintaining a parameter on application level at design time.
Thanks for your prompt support.
Thanks & Regards,
Harsh