Hi Raviraj,
How are you trying to load the data? The ICEfaces dataTable is compatible with RowSet, any javax.faces.model.DataModel, or List of custom objects. If you're receiving a session expired then there may be an application error occuring. Check your server logs for any errors or exceptions. You might also try going through the ICEfaces dataTable tutorial: http://resources.icefaces.org/tutorials/dataTable-tutorial.html.
For tips on using the Autocomplete SelectInputText ICEfaces component, please take a look at our demos, whose source code is included in the free Community Edition download at http://www.icesoft.com/downloads/index.php
The Component Showcase has examples of all of teh ICEfaces components, including the autocomplete text box.
You might also try inquiring about these issues on the ICEfaces forum: http://support.icesoft.com/jive/forumcategory.jspa?categoryID=5
Cheers,
Philip B.
ICEsoft Technologies