Are you using cmp only? Are there any errors shown in the logs? Can you provide a test case?
I am sorry, the mistake was make by myself I think.
There was a little mess yesterday. There is one place I forgot to close connection. I fixed it and the database and jboss is in some kind confuse, I was as while. Something worked and something not. Anyway, today I redeployed my code and it seems the datasource is pretty stable now.
Thanks David Jencks for your reply. Might need your help in future.