Hi,
we have a transaction management problem in our application. we use hibernate 3.x and sets the connection pool size to something more than 50. But when we used 20 threads for some stress tests it shown that transaction counts are limits by 3 transaction on one time and hibernate default jdbc transaction manager is bottleneck. Jprofiler shows us that threads will block on JDBCTransactionManager.commit() .
Also we change our approach to standalone JTA transaction managers but it doesn't solve our problem and we have 3 open transaction limitation till when we have 50 connection opened in pool.
Would you help us to solve this problem?

Thanks.