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訪問實體列表時，系統會拋出「內存不足」異常。檢索實體框架中的延遲加載列表時出現「內存不足」異常
調用堆棧有一個重複的調用塊，直到應用程序命中內存不足。
調用堆棧：
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at System.Data.Query.InternalTrees.BasicOpVisitorOfT`1.VisitNode(Node n)
/* Repeating Block */
at System.Data.Query.InternalTrees.BasicOpVisitorOfNode.VisitChildren(Node n)
at System.Data.Query.PlanCompiler.JoinElimination.VisitDefaultForAllNodes(Node n)
at System.Data.Query.PlanCompiler.JoinElimination.VisitDefault(Node n)
at System.Data.Query.InternalTrees.BasicOpVisitorOfNode.VisitPhysicalOpDefault(PhysicalOp op, Node n)
at System.Data.Query.InternalTrees.BasicOpVisitorOfT`1.Visit(PhysicalProjectOp op, Node n)
at System.Data.Query.InternalTrees.PhysicalProjectOp.Accept[TResultType](BasicOpVisitorOfT`1 v, Node n)
at System.Data.Query.InternalTrees.BasicOpVisitorOfT`1.VisitNode(Node n)
/* Repeating Block */
at System.Data.Query.PlanCompiler.JoinElimination.Process()
at System.Data.Query.PlanCompiler.PlanCompiler.Compile(List`1& providerCommands, ColumnMap& resultColumnMap, Int32& columnCount, Set`1& entitySets)
at System.Data.Query.PlanCompiler.PlanCompiler.Compile(DbCommandTree ctree, List`1& providerCommands, ColumnMap& resultColumnMap, Int32& columnCount, Set`1& entitySets)
at System.Data.EntityClient.EntityCommandDefinition..ctor(DbProviderFactory storeProviderFactory, DbCommandTree commandTree)
at System.Data.EntityClient.EntityProviderServices.CreateCommandDefinition(DbProviderFactory storeProviderFactory, DbCommandTree commandTree)
at System.Data.EntityClient.EntityProviderServices.CreateDbCommandDefinition(DbProviderManifest providerManifest, DbCommandTree commandTree)
at System.Data.Common.DbProviderServices.CreateCommandDefinition(DbCommandTree commandTree)
at System.Data.Objects.Internal.ObjectQueryExecutionPlan.Prepare(ObjectContext context, DbQueryCommandTree tree, Type elementType, MergeOption mergeOption, Span span, ReadOnlyCollection`1 compiledQueryParameters, AliasGenerator aliasGenerator)
at System.Data.Objects.EntitySqlQueryState.GetExecutionPlan(Nullable`1 forMergeOption)
at System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
at System.Data.Objects.ObjectQuery`1.Execute(MergeOption mergeOption)
at System.Data.Objects.DataClasses.EntityCollection`1.Load(List`1 collection, MergeOption mergeOption)
at System.Data.Objects.DataClasses.EntityCollection`1.Load(MergeOption mergeOption)
at System.Data.Objects.DataClasses.RelatedEnd.Load()
at System.Data.Objects.DataClasses.RelatedEnd.DeferredLoad()
at System.Data.Objects.Internal.LazyLoadBehavior.LoadProperty[TItem](TItem propertyValue, String relationshipName, String targetRoleName, Boolean mustBeNull, Object wrapperObject)
at System.Data.Objects.Internal.LazyLoadBehavior.<>c__DisplayClass7`2.<GetInterceptorDelegate>b__1(TProxy proxy, TItem item)
在這裏或可能可能是什麼問題任何線索如何去調試問題，一些提示？
，我試圖以模型的層次結構是有點大，有3個級別的繼承：
大約有20個教學班，其從A1衍生，約30類派生哪些來自A2。當我嘗試訪問'A'類型的對象時，系統會'內存不足'。這個問題似乎與EF如何嘗試生成執行計劃和相應的SQL來訪問「A」類型的項目有關。
你應該顯示相應的一段代碼... –
也許你在你的模型中有一些遞歸？如果你添加一些代碼，這將有助於 – MarkG
問題可能是該集合有1億個實體。 – Slauma