I got the exception loading a one-to-many with lazy = true
I think the mapping is too big...

Hibernate version:
1.0.4

Mapping documents:

<class name="ObjectModel.Asset.AssetBase, ObjectModel" table="Asset_AssetBase">
<id name="Id" type="Int32" column="Id" access="field.pascalcase-m-underscore" unsaved-value="0">
<generator class="hilo">
<param name="table">NH_Key_Asset</param>
<param name="column">Asset_AssetBase</param>
<param name="max_lo">0</param>
</generator>
</id>
<version name="RowVersion" column="RowVersion" type="Int32" unsaved-value="negative" />
<property name="AccumulatedTonnage" column="AccumulatedTonnage" type="Decimal" />
<property name="ContainsAttachment" column="ContainsAttachment" type="Boolean" />
<property name="CreateTimestamp" column="CreateTimestamp" type="DateTime" />
<property name="CreateUser" column="CreateUser" type="Int32" />
<property name="DateTonnage" column="DateTonnage" type="DateTime" />
<property name="DeliveryDate" column="DeliveryDate" type="DateTime" />
<property name="Description" column="Description" type="String" />
<property name="ExpiryDate" column="ExpiryDate" type="DateTime" />
<property name="Guid" column="Guid" type="Guid" />
<property name="LocationFrom" column="LocationFrom" type="Decimal" />
<property name="LocationTo" column="LocationTo" type="Decimal" />
<property name="IsAlive" formula="(ISDATE(ExpiryDate)+1)%2" type="Boolean" />
<property name="UpdateTimestamp" column="UpdateTimestamp" type="DateTime" />
<property name="UpdateUser" column="UpdateUser" type="Int32" />
<property name="UserCode" column="UserCode" type="String" />
<property name="InitialTonnage" column="InitialTonnage" type="Decimal" />
<bag name="segmenttonnages" lazy="true" inverse ="true" cascade="all">
<key column="IdAssetBase" />
<one-to-many class="ObjectModel.Process.SegmentTonnage, ObjectModel" />
</bag>
<bag name="assettonnages" lazy="true" inverse ="true" cascade="all">
<key column="IdAsset" />
<one-to-many class="ObjectModel.Tonnage.AssetTonnage, ObjectModel" />
</bag>
<bag name="pointofinterests" lazy="true" inverse ="true" cascade="all">
<key column="IdAssetBase" />
<one-to-many class="ObjectModel.Gis.PointOfInterest, ObjectModel" />
</bag>
<bag name="singularparametersdata" lazy="true" inverse ="true" cascade="all">
<key column="IdAssetBase" />
<one-to-many class="ObjectModel.Parameter.SingularParameterData, ObjectModel" />
</bag>
<bag name="activitydetails" lazy="true" inverse ="true" cascade="all">
<key column="IdAssetBase" />
<one-to-many class="ObjectModel.Activity.ActivityDetail, ObjectModel" />
</bag>
<bag name="defects" lazy="true" inverse ="true" cascade="all">
<key column="IdAssetBase" />
<one-to-many class="ObjectModel.Defect.Defect, ObjectModel" />
</bag>
<joined-subclass name="ObjectModel.Asset.Accomodation, ObjectModel" table="Asset_Accomodation">
<key column="Id" />
<bag name="accomodationfroms" lazy="true" inverse ="true" cascade="all">
<key column="IdAccomodationFrom" />
<one-to-many class="ObjectModel.Activity.Activity, ObjectModel" />
</bag>
<bag name="accomodationtos" lazy="true" inverse ="true" cascade="all">
<key column="IdAccomodationTo" />
<one-to-many class="ObjectModel.Activity.Activity, ObjectModel" />
</bag>
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.AssetTrack, ObjectModel" table="Asset_AssetTrack">
<key column="Id" />
<property name="UnloadingTrackSection" column="UnloadingTrackSection" type="Boolean" />
<many-to-one name="Line" column="IdLine" class="ObjectModel.Asset.Line, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.TrackType, ObjectModel" cascade="none" />
<many-to-one name="Track" column="Id" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" insert="false" update="false" />
<bag name="accomodations" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Accomodation, ObjectModel" />
</bag>
<bag name="activitytimedetails" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Activity.ActivityTimeDetail, ObjectModel" />
</bag>
<bag name="assetdefects" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Defect.Defect, ObjectModel" />
</bag>
<bag name="badformareas" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.BadFormArea, ObjectModel" />
</bag>
<bag name="ballasts" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Ballast, ObjectModel" />
</bag>
<bag name="bores" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Bore, ObjectModel" />
</bag>
<bag name="borrowpits" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.BorrowPit, ObjectModel" />
</bag>
<bag name="bridges" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Bridge, ObjectModel" />
</bag>
<bag name="catchpoints" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.CatchPoint, ObjectModel" />
</bag>
<bag name="clusteringdetails" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Process.ClusteringDetail, ObjectModel" />
</bag>
<bag name="culverts" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Culvert, ObjectModel" />
</bag>
<bag name="cuttings" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Cutting, ObjectModel" />
</bag>
<bag name="derailers" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Derailer, ObjectModel" />
</bag>
<bag name="drains" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Drain, ObjectModel" />
</bag>
<bag name="dustpits" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.DustPit, ObjectModel" />
</bag>
<bag name="fencings" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Fencing, ObjectModel" />
</bag>
<bag name="galleries" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Gallery, ObjectModel" />
</bag>
<bag name="grindingcomments" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.GrindingComment, ObjectModel" />
</bag>
<bag name="grindingscheduledetails" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Schedule.GrindingScheduleDetail, ObjectModel" />
</bag>
<bag name="horizontalalignments" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.HorizontalAlignment, ObjectModel" />
</bag>
<bag name="insulatedjoints" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.InsulatedJoint, ObjectModel" />
</bag>
<bag name="linesections" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.LineSection, ObjectModel" />
</bag>
<bag name="longweldedrails" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.LongWeldedRail, ObjectModel" />
</bag>
<bag name="overheadlines" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.OverheadLine, ObjectModel" />
</bag>
<bag name="protectionequipments" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.ProtectionEquipment, ObjectModel" />
</bag>
<bag name="rails" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Rail, ObjectModel" />
</bag>
<bag name="raingauges" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.RainGauge, ObjectModel" />
</bag>
<bag name="roadcrossings" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.RoadCrossing, ObjectModel" />
</bag>
<bag name="runsections" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.DataMonitoring.RunSection, ObjectModel" />
</bag>
<bag name="segtracks" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Process.SegTrack, ObjectModel" />
</bag>
<bag name="sleepers" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Sleeper, ObjectModel" />
</bag>
<bag name="stations" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Station, ObjectModel" />
</bag>
<bag name="tangents" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Tangent, ObjectModel" />
</bag>
<bag name="tracksections" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.TrackSection, ObjectModel" />
</bag>
<bag name="trainspeeds" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.TrainSpeed, ObjectModel" />
</bag>
<bag name="turnouts" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Turnout, ObjectModel" />
</bag>
<bag name="verticalalignments" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.VerticalAlignment, ObjectModel" />
</bag>
<bag name="welds" lazy="true" inverse ="true" cascade="all">
<key column="IdTrack" />
<one-to-many class="ObjectModel.Asset.Weld, ObjectModel" />
</bag>
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.BadFormArea, ObjectModel" table="Asset_BadFormArea">
<key column="Id" />
<many-to-one name="ConditionType" column="IdConditionType" class="ObjectModel.Lookup.BadFormAreaConditionType, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Ballast, ObjectModel" table="Asset_Ballast">
<key column="Id" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.BallastType, ObjectModel" cascade="none" />
<many-to-one name="ThicknessType" column="IdThicknessType" class="ObjectModel.Lookup.BallastThicknessType, ObjectModel" cascade="none" />
<property name="Quantity" column="Quantity" type="Decimal" />
<property name="IsInGallery" column="IsInGallery" type="Boolean" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Blade, ObjectModel" table="Asset_Blade">
<key column="Id" />
<many-to-one name="Condition" column="IdCondition" class="ObjectModel.Lookup.ConditionType, ObjectModel" cascade="none" />
<many-to-one name="Position" column="IdPosition" class="ObjectModel.Lookup.BladePosition, ObjectModel" cascade="none" />
<many-to-one name="RollerType" column="IdRollerType" class="ObjectModel.Lookup.BladeRollerType, ObjectModel" cascade="none" />
<many-to-one name="Switch" column="IdSwitch" class="ObjectModel.Asset.Switch, ObjectModel" cascade="none" />
<many-to-one name="TipType" column="IdTipType" class="ObjectModel.Lookup.BladeTipType, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.BladeType, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Bore, ObjectModel" table="Asset_Bore">
<key column="Id" />
<property name="BoreDepth" column="BoreDepth" type="Decimal" />
<property name="BoreDia" column="BoreDia" type="Decimal" />
<property name="BoreYield" column="BoreYield" type="Decimal" />
<many-to-one name="Side" column="IdSide" class="ObjectModel.Lookup.SideType, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.BorrowPit, ObjectModel" table="Asset_BorrowPit">
<key column="Id" />
<many-to-one name="Side" column="IdSide" class="ObjectModel.Lookup.SideType, ObjectModel" cascade="none" />
<many-to-one name="Status" column="IdStatus" class="ObjectModel.Lookup.StatusType, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Bridge, ObjectModel" table="Asset_Bridge">
<key column="Id" />
<property name="HasHandrail" column="HasHandrail" type="Boolean" />
<many-to-one name="HandrailSide" column="IdHandrailSide" class="ObjectModel.Lookup.HandrailSide, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<property name="SpanCount" column="SpanCount" type="Int32" />
<property name="SpanLength" column="SpanLength" type="Int32" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.CatchPoint, ObjectModel" table="Asset_CatchPoint">
<key column="Id" />
<many-to-one name="DirectionType" column="IdDirectionType" class="ObjectModel.Lookup.DirectionType, ObjectModel" cascade="none" />
<many-to-one name="MotorType" column="IdMotorType" class="ObjectModel.Lookup.CatchPointMotorType, ObjectModel" cascade="none" />
<many-to-one name="Size" column="IdSize" class="ObjectModel.Lookup.CatchPointSize, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.CatchPointType, ObjectModel" cascade="none" />
<property name="IsMotorised" column="IsMotorised" type="Boolean" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Culvert, ObjectModel" table="Asset_Culvert">
<key column="Id" />
<many-to-one name="PipeType" column="IdPipeType" class="ObjectModel.Lookup.PipeType, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="EndTreatmentType" column="IdEndTreatmentType" class="ObjectModel.Lookup.CulvertEndTreatmentType, ObjectModel" cascade="none" />
<property name="InvertLVLEast" column="InvertLVLEast" type="Decimal" />
<property name="InvertLVLWest" column="InvertLVLWest" type="Decimal" />
<property name="PipeCount" column="PipeCount" type="Int16" />
<property name="PipeHeight" column="PipeHeight" type="Decimal" />
<property name="PipeLength" column="PipeLength" type="Decimal" />
<property name="PipeWidth" column="PipeWidth" type="Decimal" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Cutting, ObjectModel" table="Asset_Cutting">
<key column="Id" />
<property name="AvgHeight" column="AvgHeight" type="Decimal" />
<many-to-one name="LandType" column="IdLandType" class="ObjectModel.Lookup.LandType, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<property name="MaxHeight" column="MaxHeight" type="Decimal" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Derailer, ObjectModel" table="Asset_Derailer">
<key column="Id" />
<many-to-one name="Hand" column="IdHand" class="ObjectModel.Lookup.DerailerHand, ObjectModel" cascade="none" />
<many-to-one name="RailLeg" column="IdRailLeg" class="ObjectModel.Lookup.RailLeg, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.DerailerType, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Drain, ObjectModel" table="Asset_Drain">
<key column="Id" />
<many-to-one name="Side" column="IdSide" class="ObjectModel.Lookup.SideType, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.DrainType, ObjectModel" cascade="none" />
<joined-subclass name="ObjectModel.Asset.DrainDx, ObjectModel" table="Asset_DrainDx">
<key column="Id" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.DrainSx, ObjectModel" table="Asset_DrainSx">
<key column="Id" />
</joined-subclass>
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.DustPit, ObjectModel" table="Asset_DustPit">
<key column="Id" />
<many-to-one name="Side" column="IdSide" class="ObjectModel.Lookup.DustPitSide, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Fencing, ObjectModel" table="Asset_Fencing">
<key column="Id" />
<many-to-one name="Side" column="IdSide" class="ObjectModel.Lookup.FencingSide, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Frog, ObjectModel" table="Asset_Frog">
<key column="Id" />
<many-to-one name="Condition" column="IdCondition" class="ObjectModel.Lookup.ConditionType, ObjectModel" cascade="none" />
<many-to-one name="Manufacturer" column="IdManufacturer" class="ObjectModel.Lookup.FrogManufacturer, ObjectModel" cascade="none" />
<many-to-one name="RollerType" column="IdRollerType" class="ObjectModel.Lookup.FrogRollerType, ObjectModel" cascade="none" />
<many-to-one name="Switch" column="IdSwitch" class="ObjectModel.Asset.Switch, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.FrogType, ObjectModel" cascade="none" />
<property name="SerialNumber" column="SerialNumber" type="String" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Gallery, ObjectModel" table="Asset_Gallery">
<key column="Id" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.GrindingComment, ObjectModel" table="Asset_GrindingComment">
<key column="Id" />
<property name="Comment" column="Comment" type="String" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Guardrail, ObjectModel" table="Asset_Guardrail">
<key column="Id" />
<many-to-one name="Side" column="IdSide" class="ObjectModel.Lookup.SideType, ObjectModel" cascade="none" />
<many-to-one name="Switch" column="IdSwitch" class="ObjectModel.Asset.Switch, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.GuardrailType, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.HorizontalAlignment, ObjectModel" table="Asset_HorizontalAlignment">
<key column="Id" />
<property name="CurveRadius" column="CurveRadius" type="Decimal" />
<property name="HorizAlignmentLength" column="HorizAlignmentLength" type="Decimal" />
<many-to-one name="CurveDirection" column="IdCurveDirection" class="ObjectModel.Lookup.CurveDirectionType, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.HorizontalSectionType, ObjectModel" cascade="none" />
<property name="SpiralsTotal" column="SpiralsTotal" type="Int32" />
<property name="Superelevation" column="Superelevation" type="Int16" />
<property name="NumArcs" column="NumArcs" type="Int16" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.InsulatedJoint, ObjectModel" table="Asset_InsulatedJoint">
<key column="Id" />
<many-to-one name="Leg" column="IdLeg" class="ObjectModel.Lookup.RailLeg, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.InsulatedJointType, ObjectModel" cascade="none" />
<joined-subclass name="ObjectModel.Asset.InsulatedJointDx, ObjectModel" table="Asset_InsulatedJointDx">
<key column="Id" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.InsulatedJointSx, ObjectModel" table="Asset_InsulatedJointSx">
<key column="Id" />
</joined-subclass>
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Line, ObjectModel" table="Asset_Line">
<key column="Id" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.LineType, ObjectModel" cascade="none" />
<bag name="assettracks" lazy="true" inverse ="true" cascade="all">
<key column="IdLine" />
<one-to-many class="ObjectModel.Asset.AssetTrack, ObjectModel" />
</bag>
<bag name="infrastructures" lazy="true" inverse ="true" cascade="all">
<key column="IdLine" />
<one-to-many class="ObjectModel.Gis.Infrastructure, ObjectModel" />
</bag>
<bag name="kilometerpoints" lazy="true" inverse ="true" cascade="all">
<key column="IdLine" />
<one-to-many class="ObjectModel.Gis.KilometerPoint, ObjectModel" />
</bag>
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.LineSection, ObjectModel" table="Asset_LineSection">
<key column="Id" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.LongWeldedRail, ObjectModel" table="Asset_LongWeldedRail">
<key column="Id" />
<many-to-one name="Leg" column="IdLeg" class="ObjectModel.Lookup.RailLeg, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<property name="CalibrationLenght" column="CalibrationLenght" type="Int32" />
<property name="CalibrationTemperature" column="CalibrationTemperature" type="Int16" />
<property name="CalibrationYear" column="CalibrationYear" type="Int16" />
<joined-subclass name="ObjectModel.Asset.LongWeldedRailDx, ObjectModel" table="Asset_LongWeldedRailDx">
<key column="Id" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.LongWeldedRailSx, ObjectModel" table="Asset_LongWeldedRailSx">
<key column="Id" />
</joined-subclass>
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.OverheadLine, ObjectModel" table="Asset_OverheadLine">
<key column="Id" />
<many-to-one name="ElectrificationType" column="IdElectrificationType" class="ObjectModel.Lookup.ElectrificationType, ObjectModel" cascade="none" />
<many-to-one name="IsolatorType" column="IdIsolatorType" class="ObjectModel.Lookup.IsolatorType, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<property name="MinHeight" column="MinHeight" type="Decimal" />
<property name="LeftWireLayingDate" column="LeftWireLayingDate" type="DateTime" />
<property name="RightWireLayingDate" column="RightWireLayingDate" type="DateTime" />
<property name="NumSpans" column="NumSpans" type="Int16" />
<property name="IsInGallery" column="IsInGallery" type="Boolean" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.ProtectionEquipment, ObjectModel" table="Asset_ProtectionEquipment">
<key column="Id" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.ProtectionEquipmentType, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Rail, ObjectModel" table="Asset_Rail">
<key column="Id" />
<many-to-one name="Condition" column="IdCondition" class="ObjectModel.Lookup.ConditionType, ObjectModel" cascade="none" />
<many-to-one name="Leg" column="IdLeg" class="ObjectModel.Lookup.RailLeg, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.RailType, ObjectModel" cascade="none" />
<many-to-one name="RailHardnessType" column="IdRailHardnessType" class="ObjectModel.Lookup.RailHardnessType, ObjectModel" cascade="none" />
<many-to-one name="AtomicRailLenghtType" column="IdAtomicRailLenghtType" class="ObjectModel.Lookup.AtomicRailLenghtType, ObjectModel" cascade="none" />
<property name="StringDate" column="StringDate" type="DateTime" />
<property name="StringID" column="StringID" type="String" />
<property name="IsInGallery" column="IsInGallery" type="Boolean" />
<joined-subclass name="ObjectModel.Asset.RailDx, ObjectModel" table="Asset_RailDx">
<key column="Id" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.RailSx, ObjectModel" table="Asset_RailSx">
<key column="Id" />
</joined-subclass>
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.RainGauge, ObjectModel" table="Asset_RainGauge">
<key column="Id" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.RoadCrossing, ObjectModel" table="Asset_RoadCrossing">
<key column="Id" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.RoadCrossingType, ObjectModel" cascade="none" />
<property name="PanelCount" column="PanelCount" type="Int16" />
<property name="HasBellsAndLights" column="HasBellsAndLights" type="Boolean" />
<property name="HasBoomgates" column="HasBoomgates" type="Boolean" />
<property name="MaxSpeed" column="MaxSpeed" type="Decimal" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Sleeper, ObjectModel" table="Asset_Sleeper">
<key column="Id" />
<many-to-one name="ClipType" column="IdClipType" class="ObjectModel.Lookup.ClipType, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.SleeperType, ObjectModel" cascade="none" />
<many-to-one name="FeatureType" column="IdFeatureType" class="ObjectModel.Lookup.SleeperFeatureType, ObjectModel" cascade="none" />
<many-to-one name="FasteningType" column="IdFasteningType" class="ObjectModel.Lookup.FasteningType, ObjectModel" cascade="none" />
<many-to-one name="Condition" column="IdConditionType" class="ObjectModel.Lookup.ConditionType, ObjectModel" cascade="none" />
<many-to-one name="WheelTrackType" column="IdWheelTrackType" class="ObjectModel.Lookup.SleeperWheelTrackType, ObjectModel" cascade="none" />
<property name="Quantity" column="Quantity" type="Int16" />
<property name="IsInGallery" column="IsInGallery" type="Boolean" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Station, ObjectModel" table="Asset_Station">
<key column="Id" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<property name="IsMultiline" column="IsMultiline" type="Boolean" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Switch, ObjectModel" table="Asset_Switch">
<key column="Id" />
<bag name="blades" lazy="true" inverse ="true" cascade="all">
<key column="IdSwitch" />
<one-to-many class="ObjectModel.Asset.Blade, ObjectModel" />
</bag>
<bag name="frogs" lazy="true" inverse ="true" cascade="all">
<key column="IdSwitch" />
<one-to-many class="ObjectModel.Asset.Frog, ObjectModel" />
</bag>
<bag name="guardrails" lazy="true" inverse ="true" cascade="all">
<key column="IdSwitch" />
<one-to-many class="ObjectModel.Asset.Guardrail, ObjectModel" />
</bag>
<bag name="switchengines" lazy="true" inverse ="true" cascade="all">
<key column="IdSwitch" />
<one-to-many class="ObjectModel.Asset.SwitchEngine, ObjectModel" />
</bag>
<bag name="tracksectionswitchs" lazy="true" inverse ="true" cascade="all">
<key column="IdSwitch" />
<one-to-many class="ObjectModel.AssetCross.TrackSectionSwitch, ObjectModel" />
</bag>
<property name="BoundaryNorth" column="BoundaryNorth" type="Decimal" />
<property name="BoundarySouth" column="BoundarySouth" type="Decimal" />

<!--<property name="IdTrack" formula="(SELECT sv.IdTrack FROM Asset_SwitchView sv WHERE (Id = sv.IdAssetBaseReference) AND (sv.FlagMainTrackSection = 1))" type="Int32" />-->
<!--<property name="Track" formula="(SELECT sv.TrackCode FROM Asset_SwitchView sv WHERE (Id = sv.IdAssetBaseReference) AND (sv.FlagMainTrackSection = 1))" type="String" />-->
<property name="Track"
formula="(Select sv.IdTrack FROM Asset_SwitchView sv WHERE (Id = sv.IdAssetBaseReference) AND (sv.FlagMainTrackSection = 1))"
access="Persistence.IdMappedPropertyAccessor, Repository" insert="false" update="false"
type="Int32" />

<property name="Location" formula="(SELECT sv.Location FROM Asset_SwitchView sv WHERE (Id = sv.IdAssetBaseReference) AND (sv.FlagMainTrackSection = 1))" type="Decimal" />
<many-to-one name="TravelDirection" column="IdTravelDirection" class="ObjectModel.Lookup.SwitchTravelDirection, ObjectModel" cascade="none" />
<many-to-one name="TurnDirection" column="IdTurnDirection" class="ObjectModel.Lookup.SwitchTurnDirection, ObjectModel" cascade="none" />
<many-to-one name="TurnRate" column="IdTurnRate" class="ObjectModel.Lookup.SwitchTurnRate, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.SwitchType, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.SwitchEngine, ObjectModel" table="Asset_SwitchEngine">
<key column="Id" />
<property name="EngineCount" column="EngineCount" type="Int16" />
<many-to-one name="EngineType" column="IdEngineType" class="ObjectModel.Lookup.SwitchEngineType, ObjectModel" cascade="none" />
<many-to-one name="Side" column="IdSide" class="ObjectModel.Lookup.SwitchSide, ObjectModel" cascade="none" />
<many-to-one name="Switch" column="IdSwitch" class="ObjectModel.Asset.Switch, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.TrackSection, ObjectModel" table="Asset_TrackSection">
<key column="Id" />
<property name="HasLoadedTonnes" column="HasLoadedTonnes" type="Boolean" />
<property name="WireHeightMin" column="WireHeightMin" type="Decimal" />
<property name="LocationWireHeightMin" column="LocationWireHeightMin" type="Decimal" />
<many-to-one name="AssetOwner" column="IdAssetOwner" class="ObjectModel.Config.AssetOwner, ObjectModel" cascade="none" />
<many-to-one name="FinancialSection" column="IdFinancialSection" class="ObjectModel.Cost.FinancialSection, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.TrackSectionType, ObjectModel" cascade="none" />
<bag name="tracksectionswitchs" lazy="true" inverse ="true" cascade="all">
<key column="IdTrackSection" />
<one-to-many class="ObjectModel.AssetCross.TrackSectionSwitch, ObjectModel" />
</bag>
<bag name="icsses" lazy="true" inverse ="true" cascade="all">
<key column="IdTrackSection" />
<one-to-many class="ObjectModel.Config.ICSS, ObjectModel" />
</bag>
<property name="DailyPartialTonnage" column="DailyPartialTonnage" type="Decimal" />
<bag name="selectiontracksections" lazy="true" inverse ="true" cascade="all">
<key column="IdTrackSection" />
<one-to-many class="ObjectModel.Desktop.SelectionTrackSection, ObjectModel" />
</bag>
<bag name="tracksectiontonnages" lazy="true" inverse ="true" cascade="all">
<key column="IdTrackSection" />
<one-to-many class="ObjectModel.Tonnage.TrackSectionTonnage, ObjectModel" />
</bag>
<bag name="routetracksections" lazy="true" inverse ="true" cascade="all">
<key column="IdTrackSection" />
<one-to-many class="ObjectModel.Config.RouteTrackSection, ObjectModel" />
</bag>
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.TrainSpeed, ObjectModel" table="Asset_TrainSpeed">
<key column="Id" />
<property name="PermittedSpeedEmpty" column="PermittedSpeedEmpty" type="Int16" />
<property name="PermittedSpeedLoaded" column="PermittedSpeedLoaded" type="Int16" />
<property name="SpeedEmpty" column="SpeedEmpty" type="Int16" />
<property name="SpeedLoaded" column="SpeedLoaded" type="Int16" />
<property name="SpeedA" column="SpeedA" type="Decimal" />
<property name="SpeedB" column="SpeedB" type="Decimal" />
<property name="SpeedC" column="SpeedC" type="Decimal" />
<property name="SpeedP" column="SpeedP" type="Decimal" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Turnout, ObjectModel" table="Asset_Turnout">
<key column="Id" />
<property name="IsInGallery" column="IsInGallery" type="Boolean" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.SwitchType, ObjectModel" cascade="none" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.VerticalAlignment, ObjectModel" table="Asset_VerticalAlignment">
<key column="Id" />
<property name="ElevationFrom" column="ElevationFrom" type="Decimal" />
<property name="ElevationTo" column="ElevationTo" type="Decimal" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.VerticalSectionType, ObjectModel" cascade="none" />
<property name="Slope" column="Slope" type="Decimal" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Weld, ObjectModel" table="Asset_Weld">
<key column="Id" />
<property name="Batch" column="Batch" type="String" />
<property name="DipMeasurement" column="DipMeasurement" type="Decimal" />
<many-to-one name="Condition" column="IdCondition" class="ObjectModel.Lookup.ConditionType, ObjectModel" cascade="none" />
<many-to-one name="Leg" column="IdLeg" class="ObjectModel.Lookup.RailLeg, ObjectModel" cascade="none" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.WeldType, ObjectModel" cascade="none" />
<many-to-one name="WelderType" column="IdWelderType" class="ObjectModel.Lookup.WelderTYpe, ObjectModel" cascade="none" />
<many-to-one name="GangPeople" column="IdGangPeople" class="ObjectModel.Activity.GangPeople, ObjectModel" cascade="none" />
<property name="JointTemperature" column="JointTemperature" type="Decimal" />
<property name="TestDate" column="TestDate" type="DateTime" />
<joined-subclass name="ObjectModel.Asset.WeldDx, ObjectModel" table="Asset_WeldDx">
<key column="Id" />
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.WeldSx, ObjectModel" table="Asset_WeldSx">
<key column="Id" />
</joined-subclass>
</joined-subclass>
<joined-subclass name="ObjectModel.Asset.Tangent, ObjectModel" table="Asset_Tangent">
<key column="Id" />
<many-to-one name="Track" column="IdTrack" class="ObjectModel.Asset.AssetTrack, ObjectModel" cascade="none" />
<many-to-one name="Type" column="IdType" class="ObjectModel.Lookup.HorizontalSectionType, ObjectModel" cascade="none" />
</joined-subclass>
</class>



[/b]

Code between sessionFactory.openSession() and session.close():

_session.Lock(item, LockMode.None);

NHibernateUtil.Initialize(pColl);


[b]Full stack trace of any exception that occurs:

EXCEPTION
_________
Message : could not initialize collection: [ObjectModel.Asset.AssetBase.assettonnages#59770]
Source : NHibernate
Stack Trace : at NHibernate.Collection.AbstractCollectionPersister.Initialize(Object key, ISessionImplementor session)
at NHibernate.Impl.SessionImpl.InitializeCollection(PersistentCollection collection, Boolean writing)
at NHibernate.Collection.PersistentCollection.ForceInitialization()
at NHibernate.NHibernateUtil.Initialize(Object proxy)
at Persistence.Repository.ReconnectSession(ItemBase item, IList nativeColl)

Target Site : Void Initialize(System.Object, NHibernate.Engine.ISessionImplementor)
INNER EXCEPTION
_______________
Message : Exception of type 'System.OutOfMemoryException' was thrown.
Source : mscorlib
Stack Trace : at System.String.GetStringForStringBuilder(String value, Int32 startIndex, Int32 length, Int32 capacity)
at System.Text.StringBuilder.GetNewString(String currentString, Int32 requiredLength)
at System.Text.StringBuilder.Append(Char value)
at NHibernate.Impl.MessageHelper.InfoString(Type clazz, Object id)
at NHibernate.Impl.SessionImpl.DoLoad(Type theClass, Object id, Object optionalObject, LockMode lockMode, Boolean checkDeleted)
at NHibernate.Impl.SessionImpl.DoLoadByClass(Type clazz, Object id, Boolean checkDeleted, Boolean allowProxyCreation)
at NHibernate.Impl.SessionImpl.InternalLoad(Type clazz, Object id)
at NHibernate.Type.ManyToOneType.ResolveIdentifier(Object id, ISessionImplementor session)
at NHibernate.Type.EntityType.ResolveIdentifier(Object id, ISessionImplementor session, Object owner)
at NHibernate.Impl.SessionImpl.InitializeEntity(Object obj)
at NHibernate.Loader.Loader.InitializeEntitiesAndCollections(IList hydratedObjects, Object resultSetId, ISessionImplementor session)
at NHibernate.Loader.Loader.DoQuery(ISessionImplementor session, QueryParameters queryParameters, Object optionalObject, Object optionalId, Object[] optionalCollectionKeys, Boolean returnProxies)
at NHibernate.Loader.Loader.DoQueryAndInitializeNonLazyCollections(ISessionImplementor session, QueryParameters queryParameters, Object optionalObject, Object optionalId, Object[] optionalCollectionKeys, Boolean returnProxies)
at NHibernate.Loader.OneToManyLoader.Initialize(Object id, ISessionImplementor session)
at NHibernate.Collection.AbstractCollectionPersister.Initialize(Object key, ISessionImplementor session)

Target Site : System.String GetStringForStringBuilder(System.String, Int32, Int32, Int32)

Name and version of the database you are using:
SQL SERVER 2000

The generated SQL (show_sql=true):
no sql, in memoy operation