I am new to Nhibernate and I am trying to connect to iSeries and insert records on a table. I am using Nhibernate.Mapping.Attributes for dynamically map entities. When I use only two fields, all is working:

[NHibernate.Mapping.Attributes.Class(Table = "datos2", NameType = typeof(Datos2))]
public class Datos2
{

[NHibernate.Mapping.Attributes.Id(Name = "Autoincrem")]
[NHibernate.Mapping.Attributes.Column(Name = "Autoincrem")]
[NHibernate.Mapping.Attributes.Generator(0, Class = "native")]
public virtual int Autoincrem
{ get; set; }

[NHibernate.Mapping.Attributes.Property(1, Name = "Dato1")]
[NHibernate.Mapping.Attributes.Column(Name = "Dato1")]
virtual public int Dato1 { get; set; }


}

But, when I add this code to the class:


[NHibernate.Mapping.Attributes.Property(2, Name = "Dato2")]
[NHibernate.Mapping.Attributes.Column(Name = "Dato2")]
virtual public int Dato2 { get; set; }

And the code runs the instruction “session.save(datos2)” I receive the next Exception:

[InvalidCastException: El tipo de datos devuelto no está soportado actualmente por el proveedor.]
IBM.Data.DB2.iSeries.iDB2DbTypeUtility.MapSQLTypeToDCPCType(DcSqlTypes sqlType, Int32 colccsid, UInt32 length) +750
IBM.Data.DB2.iSeries.iDB2Command.setRowOfParameterData(MpDcData[]& dcDataRow) +1664
IBM.Data.DB2.iSeries.iDB2Command.execute() +595
IBM.Data.DB2.iSeries.iDB2Command.ExecuteNonQuery() +274
NHibernate.Impl.BatcherImpl.ExecuteNonQuery(IDbCommand cmd) +63
NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object[] fields, Boolean[] notNull, SqlCommandInfo sql, Object obj, ISessionImplementor session) +992

[ADOException: could not insert: [TestAlgo+Datos2][SQL: INSERT INTO datos2 (Dato1, Dato2, Autoincrem) VALUES (?, ?, default)]]
NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object[] fields, Boolean[] notNull, SqlCommandInfo sql, Object obj, ISessionImplementor session) +1525
NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object[] fields, Object obj, ISessionImplementor session) +404
NHibernate.Impl.ScheduledIdentityInsertion.Execute() +132
NHibernate.Impl.SessionImpl.Execute(IExecutable executable) +210
NHibernate.Impl.SessionImpl.DoSave(Object theObj, EntityKey key, IEntityPersister persister, Boolean replicate, Boolean useIdentityColumn, CascadingAction cascadeAction, Object anything) +1130
NHibernate.Impl.SessionImpl.DoSave(Object obj, Object id, IEntityPersister persister, Boolean useIdentityColumn, CascadingAction cascadeAction, Object anything) +564
NHibernate.Impl.SessionImpl.SaveWithGeneratedIdentifier(Object obj, CascadingAction action, Object anything) +482
NHibernate.Impl.SessionImpl.Save(Object obj) +313
TestAlgo.Page_Load(Object sender, EventArgs e) in c:\temp\NHibernateTest\TestAlgo.aspx.cs:60
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
System.Web.UI.Control.OnLoad(EventArgs e) +91
System.Web.UI.Control.LoadRecursive() +74
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2207