One of colleague asked me, is it possible delete server cache from dash board? So started working on it, finally got solution how to do that.
I have created a script using C# on top of obiee-webservices, built a web page and embedded it on Dashboard, as of now I have incorporated Purge All, Purge by Database and they are working cool.
I have refered following resource,
I am thinking to make it as handy tool and available to every one.