jdbc: oracle database change notification & duplicate events

Question

I need some Listener for any change(update, insert, delete) of Oracle database table.

Problem: I get many detection by single update on my table.

I think its

Answer 1

From what I've read so far, I'm a bit confused as well.

Have you tried printing out the transactionId to see if it is, in fact, a unique event being generated?

System.out.println("DCE : regId="+dce.getRegristrationId()+"; transactionId="+dce.getTransactionId());

The listeners that I've been working with for JMS require an acknowledgment, but I don't see anything of that sort in the Oracle docs (http://docs.oracle.com/cd/B28359_01/java.111/b31224/dbmgmnt.htm).

I also found that it might disturb the oracle cache if the event treatment is unthreaded, but it looks you're already doing that too...

Good luck!