Hi Prasad,
If you search, you may get useful sap links.
http://help.sap.com/saphelp_nw70/helpdata/en/52/777e403566c65de10000000a155106/content.htm
http://scn.sap.com/people/kamaljeet.kharbanda/blog/2006/11/13/real-time-data-acquisition-bi2004s
Thanks