The performance data I received from the performance team was from both their test environment as wel as from their production environment. A first comparison of these two requests in the two different environments makes you believe that it is a classical data-driven performance problem because we see 3 times as many SQL executions against Oracle. The following two screenshots show the Transaction Flow of the same request in each environment. The highlighted numbers indicate the key performance metrics end user response time, frontend server response time and number of database roundtrips.
Continue reading the blog explaining the technical details on Hibernate and XML Parser performance impact: http://apmblog.compuware.com/2014/08/26/data-driven-performance-problems-always-related-hibernate/