Hi. I've been having a problem with Hibernate when running my application in Linux. This application is supposed to stay running in the background all the time.
The problem is that, for some reason, the amount of threads created by Hibernate seems to go out of control, up to the point of crashing.
Each thread ends up spawning a new process in Linux, and there is a limit on the amount of processes it can start.
I would like to know what kind of situation would cause this sort of problem. I am pretty sure I am closing all my sessions, and committing my transactions.
I always use the same SessionFactory object, which is initialized when the application is started up.
Can someone please help me out?

Thanks in advance.

What part of the red message wasn't clear?

I am sorry, I forgot to tell about the version. I am using hibernate 2.1.2.
This error is too general to post all the details about my code in it.
I have many places where hibernate is used, posting everything would take way too much space.
I wanted to know if anyone else had this problem, or if there is something critical that is mandatory to be done in order to prevent the spawning of so many threads.
The error takes a while (more than a full day) to appear, but as my hibernate calls get executed, the process count begins to go up. Those threads simply stay there and don't get killed.
I know hibernate states to be very scalable and implements a very high-concurrency architecture.
I would at least like to know what is considered to be a normal amount of threads for Hibernate to be using, in a non-stop application.

Hibernate never creates any threads. Some second-level cache implementations do, so try disabling the second-level cache and if you still get the problem, it is nothing to do with Hibernate.