Hi,

I'm putting together a business case for my company to upgrade from Hibernate 3.2.6 to one of 3.3 or 3.5.

We're stuck using JDK 1.4.2 unfortunately and as I understand things that limits us to 3.5 as a maximum.

I need to find supporting documents comparing the performance of these versions but I'm totally stuck. I'm specifically interested in memory usage performance.

Any help with this would be greatly appreciated!

From my experience there are no remarkable differences between the hibernate versions you mention,
neither in performance nor in memory usage.
You would indeed notice a performance increase when you switch from java1.4 runtime to java1.6 runtime.



You must distinct between compile-time and run-time.
Problably you are bound to 1.4.2 at compile-time,
but nothing should in theory actually distract you from using a jre 1.6 at run-time,
at least a try it would be worth.