I am having an issue using LockMode.UPGRADE.

My code looks like;

MyObject a = getObject(criteria, LockMode.UPGRADE);
a.incrementCount();
commitTransaction();

What appears to be happening is that several machines/threads try to access the object at once. Thread1 gets the lock. It increments the count from 1 to 2 and commits. Then the second thread gets the lock, but its copy of the object still has count 1. So after it increments the count is still 2, but I want it to be 3. Is thread2 getting the object from a cache? I thought with LockMode.UPGRADE hibernate would bypass the cache?

What am I missing/misunderstanding and what is the correct fix - should I call refresh right after the call to getObject?

TIA

In case you're still trying to solve this problem: what's going on in that getObject method? It's hard to tell what's happening, without it.