Hi,
Thanks for your reply. Actually we are new to both LS & Java application. So, not able to get you. Are you asking us to check the "onLostUpdates" callback at client side coding?
No, first I want to know if at least one update reaches the client. I want to understand if you're not able to receive data or if you lose only some data. In the latter case, to check the onLostUpdates client-side callback would be the first step.

In GWT, we are using the following methodology to receive the JSON message sent by LS server.
Sorry, I've never played with GWT so I don't know what that means. Please check this thread about GWT, maybe it could help: http://www.lightstreamer.com/vb/showthread.php?t=371

If you don't mind, Can we get the detailed information?
what do you mean?

Note: In LS server side(Meta Data Adapter), we are able to print all the messages sent to client. but not at the client side.
please edit Lightstreamer log configuration, setting the LightstreamerLogger.push category's level to DEBUG. This will show you what exits from the server.


HTH