Well I thought I was implementing the this properly.  But your
statement saying "This can happen when storing a reference in a
singleton" might be what is happening.

I've placed my session implementation here: http://www.keelio.com/session.zip

There are two .cs files in there.

My manager objects call NHibernateSessionManager.Instance.Session and
stores it locally as a protected INHibernateSession variable.

NHibernateSessionManager.Instance.Session is stored as a static
property:

public static INHibernateSessionManager Instance

I get an instance of my manager many times throughout the application,
which I believe just pulls the ISession object out of
httpcontext.current.items.

Perhaps if there is a good example of this out there I can narrow into
my issue.

On Oct 20, 3:43 pm, John Davidson <[email protected]> wrote:
> Have you created your own SessionManager or UnitOfWork implementation? Doing
> so may mean that you are trying to use a session after it is no longer
> valid, or when it is being used by another thread. This can happen when
> storing a reference in a singleton.
>
> John Davidson
>
>
>
> On Wed, Oct 20, 2010 at 4:38 PM, MattO <[email protected]> wrote:
> > Maybe I'm running into this, because I've been receiving all of these
> > types of errors describe in this article:
> >http://www.meadow.se/wordpress/?p=286
>
> > On Oct 20, 3:20 pm, MattO <[email protected]> wrote:
> > > So I've deployed my ASP .NET application to production and low and
> > > behold there are some very strange errors happening.  Stack traces are
> > > almost useless to figure out whats going on.  The first error that
> > > happens is as follows.  Notice the inner stack trace, why is it
> > > erroring on one of the nHibernate generated Aliases???
>
> > > could not execute query [ SELECT this_.ExamTypeAccessID as
> > > ExamType1_8_0_, this_.TS as TS8_0_, this_.domainuser as
> > > domainuser8_0_, this_.ExamType as ExamType8_0_, this_.ExamTypeID as
> > > ExamTypeID8_0_ FROM ItemBank.dbo.[ott_ExamTypeAccess] this_ WHERE
> > > this_.domainuser = @p0 ] Positional parameters: #0>domain\user [SQL:
> > > SELECT this_.ExamTypeAccessID as ExamType1_8_0_, this_.TS as TS8_0_,
> > > this_.domainuser as domainuser8_0_, this_.ExamType as ExamType8_0_,
> > > this_.ExamTypeID as ExamTypeID8_0_ FROM ItemBank.dbo.
> > > [ott_ExamTypeAccess] this_ WHERE this_.domainuser = @p0]
>
> > > at NHibernate.Loader.Loader.DoList(ISessionImplementor session,
> > > QueryParameters queryParameters)
> > > at NHibernate.Loader.Loader.ListIgnoreQueryCache(ISessionImplementor
> > > session, QueryParameters queryParameters)
> > > at NHibernate.Loader.Loader.List(ISessionImplementor session,
> > > QueryParameters queryParameters, ISet`1 querySpaces, IType[]
> > > resultTypes)
> > > at NHibernate.Impl.SessionImpl.List(CriteriaImpl criteria, IList
> > > results)
> > > at NHibernate.Impl.CriteriaImpl.List(IList results)
> > > at NHibernate.Impl.CriteriaImpl.List[T]()
> > > at
>
> > ItemBankCoreNH.ManagerObjects.ExamTypeAccessManager.GetAllAssignedExamPermi­­ssions(String
> > > domainuser)
> > > at ItemBankWeb.ItemBankMasterPage.Page_Load(Object sender, EventArgs
> > > e)
>
> > > Inner Stack Trace: ExamType1_8_0_
>
> > > at NHibernate.Loader.Loader.DoList(ISessionImplementor session,
> > > QueryParameters queryParameters)
> > > at NHibernate.Loader.Loader.ListIgnoreQueryCache(ISessionImplementor
> > > session, QueryParameters queryParameters)
> > > at NHibernate.Loader.Loader.List(ISessionImplementor session,
> > > QueryParameters queryParameters, ISet`1 querySpaces, IType[]
> > > resultTypes)
> > > at NHibernate.Impl.SessionImpl.List(CriteriaImpl criteria, IList
> > > results)
> > > at NHibernate.Impl.CriteriaImpl.List(IList results)
> > > at NHibernate.Impl.CriteriaImpl.List[T]()
> > > at
>
> > ItemBankCoreNH.ManagerObjects.ExamTypeAccessManager.GetAllAssignedExamPermi­­ssions(String
> > > domainuser)
> > > at ItemBankWeb.ItemBankMasterPage.Page_Load(Object sender, EventArgs
> > > e)
>
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