Question

我们偶尔会遇到这个非常奇怪的错误

NHibernate.ADOException: could not execute query
[ SELECT this_.Id as Id37_0_, this_.AREA_ID as AREA2_37_0_, this_.BAT_CHK as BAT3_37_0_, this_.BAT_COD as BAT4_37_0_, this_.BBEACT as BBEACT37_0_, this_.CREDATE as CREDATE37_0_, this_.DEST_LOC as DEST7_37_0_, this_.DOCNR as DOCNR37_0_, this_.DOCTYPE as DOCTYPE37_0_, this_.DUTY_STATUS as DUTY10_37_0_, this_.EAN as EAN37_0_, this_.EXCEPTION_REASON as EXCEPTION12_37_0_, this_.ERROR_TEXT as ERROR13_37_0_, this_.FLOWTYPE as FLOWTYPE37_0_, this_.GOODS_STATUS as GOODS15_37_0_, this_.INSERT_DATETIME as INSERT16_37_0_, this_.MATNR as MATNR37_0_, this_.MVTTYPE as MVTTYPE37_0_, this_.ORDNR as ORDNR37_0_, this_.PACK_ID as PACK20_37_0_, this_.PALNR as PALNR37_0_, this_.PRDACT as PRDACT37_0_, this_.QTYLOAD as QTYLOAD37_0_, this_.SCANNR as SCANNR37_0_, this_.SEQ as SEQ37_0_, this_.SOURCE_LOC as SOURCE26_37_0_, this_.STATUS as STATUS37_0_, this_.TEXT as TEXT37_0_, this_.USER_ID as USER29_37_0_, this_.WH_ID as WH30_37_0_ FROM ZZHTR_RCV this_ WHERE this_.DOCNR = ? and this_.ORDNR = ? and this_.MVTTYPE = ? and this_.WH_ID = ? ]
Positional parameters:  #0>10972365/O #0>1300196311 #0>O #0>NL02
[SQL: <same as above>]
---> System.IndexOutOfRangeException: Id37_0_
at System.Data.ProviderBase.FieldNameLookup.GetOrdinal(String fieldName)
at System.Data.SqlClient.SqlDataReader.GetOrdinal(String name)
at NHibernate.Driver.NHybridDataReader.GetOrdinal(String name)
at NHibernate.Type.NullableType.NullSafeGet(IDataReader rs, String name)
at NHibernate.Type.NullableType.NullSafeGet(IDataReader rs, String[] names, ISessionImplementor session, Object owner)
at NHibernate.Loader.Loader.GetKeyFromResultSet(Int32 i, IEntityPersister persister, Object id, IDataReader rs, ISessionImplementor session)
at NHibernate.Loader.Loader.GetRowFromResultSet(IDataReader resultSet, ISessionImplementor session, QueryParameters queryParameters, LockMode[] lockModeArray, EntityKey optionalObjectKey, IList hydratedObjects, EntityKey[] keys, Boolean returnProxies)
at NHibernate.Loader.Loader.DoQuery(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies)
at NHibernate.Loader.Loader.DoQueryAndInitializeNonLazyCollections(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies)
at NHibernate.Loader.Loader.DoList(ISessionImplementor session, QueryParameters queryParameters)
--- End of inner exception stack trace ---
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, ISet1 querySpaces, IType[] resultTypes)
at NHibernate.Loader.Criteria.CriteriaLoader.List(ISessionImplementor session)
at NHibernate.Impl.SessionImpl.List(CriteriaImpl criteria, IList results)
at NHibernate.Impl.CriteriaImpl.List(IList results)
at NHibernate.Impl.CriteriaImpl.List[T]()
at Rhino.Commons.RepositoryImplBase1.FindAll(DetachedCriteria criteria, Order[] orders)
at Rhino.Commons.Repository1.FindAll(DetachedCriteria criteria, Order[] orders)

问题是每次都不会出现此错误。我看到它是Id列，但不明白它为什么会出现问题。我很确定映射是好的

映射：

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
                   assembly="XX.Business"
                   namespace="XX.Business"
                   default-lazy="true">
  <class name="XX.Business.Receive, XX.Business" table="ZZHTR_RCV" lazy="true">
    <id name="Id" type="int">
      <generator class="identity" />
    </id>
    <property name="AreaCode" column="AREA_ID"/>
    <property name="BatchCheck" column="BAT_CHK"/>
    <property name="BatchCode" column="BAT_COD"/>
    <property name="BbeAct" column="BBEACT"/>
    <property name="CreationDate" column="CREDATE" not-null="true"/>
    <property name="DestinationLocation" column="DEST_LOC"/>
    <property name="DocNr" column="DOCNR"/>
    <property name="DocType" column="DOCTYPE"/>
    <property name="DutyStatus" column="DUTY_STATUS"/>
    <property name="Ean" column="EAN"/>
    <property name="ExceptionReason" column="EXCEPTION_REASON"/>
    <property name="ErrorText" column="ERROR_TEXT"/>
    <property name="FlowType" column="FLOWTYPE"/>
    <property name="GoodsStatus" column="GOODS_STATUS"/>
    <property name="InsertDateTime" column="INSERT_DATETIME" not-null="true"/>
    <property name="MaterialNr" column="MATNR"/>
    <property name="MovementType" column="MVTTYPE"/>
    <property name="OrderNr" column="ORDNR"/>
    <property name="ManufacturingBatch" column="PACK_ID"/>
    <property name="PalletNr" column="PALNR"/>
    <property name="ProdAct" column="PRDACT"/>
    <property name="QuantityLoad" column="QTYLOAD"/>
    <property name="ScanNr" column="SCANNR"/>
    <property name="Sequence" column="SEQ"/>
    <property name="SourceLocation" column="SOURCE_LOC"/>
    <property name="Status" column="STATUS"/>
    <property name="Text" column="TEXT"/>
    <property name="UserId" column="USER_ID"/>
    <property name="WarehouseCode" column="WH_ID"/>


  </class>
</hibernate-mapping>

类别：

[XmlRoot("ZZHTR_RCV")]
    public class Receive : DomainObject
    {
        [XmlElement("AREA_ID")]
        public virtual string AreaCode { get; set; }
        [XmlElement("BAT_CHK")]
        public virtual string BatchCheck { get; set; }
        [XmlElement("BAT_COD")]
        public virtual string BatchCode { get; set; }
        [XmlElement("BBEACT")]
        public virtual DateTime? BbeAct { get; set; }
        [XmlElement("CREDATE")]
        public virtual DateTime CreationDate { get; set; }
        [XmlElement("DEST_LOC")]
        public virtual string DestinationLocation { get; set; }
        [XmlElement("DOCNR")]
        public virtual string DocNr { get; set; }
        [XmlElement("DOCTYPE")]
        public virtual string DocType { get; set; }
        [XmlElement("DUTY_STATUS")]
        public virtual DutyStatus DutyStatus { get; set; }
        [XmlElement("EAN")]
        public virtual string Ean { get; set; }
        [XmlElement("ERROR_TEXT")]
        public virtual string ErrorText { get; set; }
        [XmlElement("FLOWTYPE")]
        public virtual string FlowType { get; set; }
        [XmlElement("GOODS_STATUS")]
        public virtual GoodsStatus GoodsStatus { get; set; }
        [XmlElement("INSERT_DATETIME")]
        public virtual DateTime InsertDateTime { get; set; }
        [XmlElement("MATNR")]
        public virtual string MaterialNr { get; set; }
        [XmlElement("MVTTYPE")]
        public virtual string MovementType { get; set; }
        [XmlElement("ORDNR")]
        public virtual string OrderNr { get; set; }
        [XmlElement("PACK_ID")]
        public virtual string ManufacturingBatch { get; set; }
        [XmlElement("PALNR")]
        public virtual string PalletNr { get; set; }
        [XmlElement("PRDACT")]
        public virtual DateTime? ProdAct { get; set; }
        [XmlElement("QTYLOAD")]
        public virtual int QuantityLoad { get; set; }
        [XmlElement("SCANNR")]
        public virtual string ScanNr { get; set; }
        [XmlElement("SEQ")]
        public virtual int Sequence { get; set; }
        [XmlElement("SOURCE_LOC")]
        public virtual string SourceLocation { get; set; }
        [XmlElement("STATUS")]
        public virtual MobileProcessingStatus Status { get; set; }
        [XmlElement("TEXT")]
        public virtual string Text { get; set; }
        [XmlElement("USER_ID")]
        public virtual string UserId { get; set; }
        [XmlElement("WH_ID")]
        public virtual string WarehouseCode { get; set; }
        [XmlElement("EXCEPTION_REASON")]
        public virtual ExceptionReason ExceptionReason { get; set; }
        public virtual string Prodline
        {
            get
            {
                if(string.IsNullOrEmpty(this.PalletNr) || !this.PalletNr.Length.Equals(18))
                {
                    return "000";
                }
                else
                {
                    return this.PalletNr.Substring(8, 3);
                }
            }
        }
        public virtual string EERPProcessOrder { get; set; }

    }

Id继承自DomainObject：

public abstract class DomainObject:IDomainObject
    {
        [DataMember]
        public virtual int Id { get; set; }

表：

[Id] [int] IDENTITY(1,1) NOT NULL,
    [AREA_ID] [nvarchar](255) NOT NULL,
    [BAT_CHK] [nvarchar](255) NULL,
    [BAT_COD] [nvarchar](255) NULL,
    [BBEACT] [datetime] NULL,
    [CREDATE] [datetime] NOT NULL,
    [DEST_LOC] [nvarchar](255) NULL,
    [DOCNR] [nvarchar](255) NOT NULL,
    [DOCTYPE] [nchar](2) NOT NULL,
    [DUTY_STATUS] [int] NOT NULL,
    [EAN] [nvarchar](255) NOT NULL,
    [ERROR_TEXT] [nvarchar](255) NULL,
    [EXCEPTION_REASON] [int] NULL,
    [FLOWTYPE] [nvarchar](255) NULL,
    [GOODS_STATUS] [int] NOT NULL,
    [INSERT_DATETIME] [datetime] NOT NULL,
    [MATNR] [nvarchar](255) NOT NULL,
    [MVTTYPE] [nchar](1) NOT NULL,
    [ORDNR] [nvarchar](255) NOT NULL,
    [PACK_ID] [nvarchar](255) NULL,
    [PALNR] [nvarchar](255) NOT NULL,
    [PRDACT] [datetime] NULL,
    [QTYLOAD] [int] NOT NULL,
    [SCANNR] [nvarchar](255) NOT NULL,
    [SEQ] [int] NOT NULL,
    [SOURCE_LOC] [nvarchar](255) NULL,
    [STATUS] [int] NOT NULL,
    [TEXT] [nvarchar](255) NULL,
    [USER_ID] [nvarchar](255) NOT NULL,
    [WH_ID] [nvarchar](255) NOT NULL,

有人可以帮忙吗？

Answer 1

我们 - 和其他人 - 也遇到过这个问题。它似乎与多线程访问非线程安全SqlConnection有关。以下非常长帖子包含更多示例以及有关该问题的更多详细信息：SQLDataReader.GetOrdinal() fails rarely with IndexOutOfRange。那里有 bbzippo ：

很明显，SqlDataReader读取从结果中遗留下来的结果集以前的查询执行相同连接几秒钟。

不幸的是，我没有找到任何真正的解释，为什么在一段时间没有问题的代码中突然发生这种异常。

在给定帖子中提出的一些建议是：

关闭连接池，因此您的连接字符串将如下所示： "Data Source=Sql2005;Initial Catalog=MyDbName;User Id=MyLogin;Password=MyPass;Pooling=false"（这很可能意味着您的应用会受到性能影响，但肯定会有效）
将引用static个实例的所有SqlConnection代码重构为non-static
修复对SqlConnection的可能的多线程访问（这可能不那么容易......）

我仍在尝试在我们的应用程序中找到错误的来源，但这并不容易，因为我无法在我们的实时环境之外重现它。上面提到的帖子中Matt Neerincx [MSFT] suggests in one of his answers 使用不同的连接字符串，因此应用程序不同部分的连接池不同，以帮助缩小问题的根源。

我发现有关此问题的另一个读法是在hibernate论坛上：https://forum.hibernate.org/viewtopic.php?p=2386963，其中一张海报在多线程场景中也存在延迟加载问题。

希望这会引导任何人朝着正确的方向寻找解决方案。

Nhibernate FieldNameLookup抛出IndexOutOfRangeException

1 个答案: