I am using NHibernate 0.9.1.0 for an ASP.net web service. I am caching the Configuration class in the session, and I correctly close and dispose the session before returning from the web method.
However I have a continual memory leak of 250kb per web service request.
Most of the leaked data is in the NHibernate namespace classes, most predominantly in the SqlCommand, and System.String classes.

Does anybody have any idea why this could be happenning? Are there known issues/typical cache or nhibernate settings?

Any help is much appreciated.

Thanks

- Adam Langley

The first thing you could do is to see if it has already been fixed. Please try the latest version (1.0.2) and see if the problem persists. If so, please enable the log4net logging and post the log from a typical session.

Thanks,

The issue is that we have a large application build on this version, and we cant upgrade to 1.x due to breaking changes with nullable types.
I will enable logging in this version and see what it says...

- Adam

Did you solve this problem finally? I have the same sitiation with ASP.NET 2.0 & NHibernate 1.0.2. I'll appreciate any advice.