We now have an application that serves several clients, but it happens that we get a big client with an average of 1000 simultaneous accesses, and now our application, ends up in lock, for a great time, this happens only with a large data flow in the bank, approximately 5,000 operations per second, this could somehow be some limitation of JBoss Seam (at times it is triggered @Syncronized exception), until in the database begins to be stored several different locks in the database, and the application to Operate with few users (~ 300 users).
I have tried everything a little, if you can help me, I thank you very much.
EDIT:
Hi, with some tests done, I see that my problem is a bottleneck of great information in the database, have already had some problem of this type using hibernate + SQL SERVER