Yeah, I can run the full NHibernate logging to see exactly what is
going on for any one particular issue on my development machine.  But
ideally I want to programmatically capture the extra details when it
happens on a customer's instance of our application (we have had some
clients come across a save error that we cannot reproduce, for
instance).  We have nhibernate logging and show_sql turned off in our
Release version.


On Apr 21, 10:09 pm, "Andrew C. Smith" <[email protected]> wrote:
> Okay well, I think it might make sense to have NHIbernate perform it's
> traces and see what the last few queries executed where when the error
> occurs. This should start heading your down in the right path.
>
> I'm not sure how your configuring NHibernate by using the "show_sql" in the
> hibernate-configuration file to export the sql the NHibernate runs to the
> console output or configuring log4net for NHibernate.
>
> On Tue, Apr 21, 2009 at 11:02 PM, dvanorny <[email protected]> wrote:
>
> > Yes, we do have validation build into our business layer -- so this
> > exact database error should never happen.  The problem I would like to
> > solve is: when a client gets a saving error (even if it is a column
> > length issue) I want to know which database table the error came
> > from.  There are over 100 children database tables that are being
> > handled by the one NHibernate Save command, and it is virtually
> > impossible to figure out where a random database saving error occurs
> > when we are not given any details.  Hope that helps.
>
> > On Apr 21, 9:47 pm, "Andrew C. Smith" <[email protected]> wrote:
> > > I don't think NHibernate provides you the exact problem, But I can tell
> > you
> > > why this is probably happening. I've had this error before and it was
> > when I
> > > was trying to put more information into a column than it allowed. such as
> > > shoving a 50 character property into a 4 character field. This can be
> > easy
> > > to figure out if you take a look at your schema and do some validation on
> > > your entities before you execute a save.
>
> > > Maybe look into using an interceptor to perform the validation of your
> > > entity for the required lengths.
>
> > > On Tue, Apr 21, 2009 at 6:04 PM, DanVan <[email protected]> wrote:
>
> > > > I am calling Save on an nHibernate object that has many children
> > > > attached to it.  Upon save, sometimes an error happens when nHibernate
> > > > starts inserting into my sql database ("The data was truncated while
> > > > converting from one data type to another." for instance).  Following
> > > > are the top lines of the Exception.  My question is, how do I figure
> > > > out which table/column is the culprit within my save error?
>
> > > >   at System.Data.SqlServerCe.SqlCeCommand.ProcessResults(Int32 hr)
> > > >   at System.Data.SqlServerCe.SqlCeCommand.ExecuteCommandText(IntPtr&
> > > > pCursor, Boolean& isBaseTableCursor)
> > > >   at System.Data.SqlServerCe.SqlCeCommand.ExecuteCommand
> > > > (CommandBehavior behavior, String method, ResultSetOptions options)
> > > >   at System.Data.SqlServerCe.SqlCeCommand.ExecuteNonQuery()
> > > >   at NHibernate.AdoNet.AbstractBatcher.ExecuteNonQuery(IDbCommand
> > > > cmd)
> > > >   at NHibernate.Id.Insert.AbstractSelectingDelegate.PerformInsert
> > > > (SqlCommandInfo insertSQL, ISessionImplementor session, IBinder
> > > > binder)
> > > >   at NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object
> > > > [] fields, Boolean[] notNull, SqlCommandInfo sql, Object obj,
> > > > ISessionImplementor session)
> > > >   at NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object
> > > > [] fields, Object obj, ISessionImplementor session)
> > > >   at NHibernate.Action.EntityIdentityInsertAction.Execute()
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