Hi Kalyan,
Is a good practice not to open threads, with "urgent, need, help,...." subject. The thread name need to honor to the question. Having said that....
Take a look to the next thread.
How to display SQL statements executed by JEE applications using minimal tracing
http://www-01.ibm.com/support/docview.wss?uid=swg21496047
You can use HealthCenter or PMT too to take a look to datasources.
IBM Monitoring and Diagnostic Tools - Health Center
http://www.ibm.com/developerworks/java/jdk/tools/healthcenter/
WebSphere Application Server Performance Tuning Toolkit
http://www.ibm.com/developerworks/websphere/downloads/performtuning.html
If your application have traces, maybe you can enable traces at application level or talk with your DBA, at DB level you can have more information about who is connecting (filtering by IP addres, user,..).
Hope this helps. Tell us if you need more support
Regards