Question

我正在使用NHibernate通过ODBC从Oracle数据库中选择一个实体。

这在32位系统上工作正常，但在x64上会出现以下错误：看起来rowcount格式不正确？

（ODBC部分）

Arithmetic operation resulted in an overflow.

   at System.Data.Odbc.OdbcStatementHandle.RowCount(SQLLEN& rowCount)
   at System.Data.Odbc.OdbcDataReader.GetRowCount()
   at System.Data.Odbc.OdbcDataReader.FirstResult()
   at System.Data.Odbc.OdbcCommand.ExecuteReaderObject(CommandBehavior behavior, String method, Boolean needReader, Object[] methodArguments, SQL_API odbcApiMethod)
   at System.Data.Odbc.OdbcCommand.ExecuteReaderObject(CommandBehavior behavior, String method, Boolean needReader)
   at System.Data.Odbc.OdbcCommand.ExecuteReader(CommandBehavior behavior)
   at System.Data.Odbc.OdbcCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader()
   at NHibernate.AdoNet.AbstractBatcher.ExecuteReader(IDbCommand cmd)
   at NHibernate.Loader.Loader.GetResultSet(IDbCommand st, Boolean autoDiscoverTypes, Boolean callable, RowSelection selection, ISessionImplementor     session)
   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.LoadEntity(ISessionImplementor session, Object id, IType identifierType, Object optionalObject, String     optionalEntityName, Object optionalIdentifier, IEntityPersister persister)

（NHibernate部分，但我怀疑问题是在这里）：

could not load an entity: (Simple NHIbernate Query, works on x86)

   at NHibernate.Loader.Loader.LoadEntity(ISessionImplementor session, Object id, IType identifierType, Object optionalObject, String     optionalEntityName, Object optionalIdentifier, IEntityPersister persister)
   at NHibernate.Loader.Entity.AbstractEntityLoader.Load(ISessionImplementor session, Object id, Object optionalObject, Object optionalId)
   at NHibernate.Loader.Entity.AbstractEntityLoader.Load(Object id, Object optionalObject, ISessionImplementor session)
   at NHibernate.Persister.Entity.AbstractEntityPersister.Load(Object id, Object optionalObject, LockMode lockMode, ISessionImplementor session)
   at NHibernate.Event.Default.DefaultLoadEventListener.LoadFromDatasource(LoadEvent event, IEntityPersister persister, EntityKey keyToLoad, LoadType     options)
   at NHibernate.Event.Default.DefaultLoadEventListener.DoLoad(LoadEvent event, IEntityPersister persister, EntityKey keyToLoad, LoadType options)
   at NHibernate.Event.Default.DefaultLoadEventListener.Load(LoadEvent event, IEntityPersister persister, EntityKey keyToLoad, LoadType options)
   at NHibernate.Event.Default.DefaultLoadEventListener.ProxyOrLoad(LoadEvent event, IEntityPersister persister, EntityKey keyToLoad, LoadType options)
   at NHibernate.Event.Default.DefaultLoadEventListener.OnLoad(LoadEvent event, LoadType loadType)
   at NHibernate.Impl.SessionImpl.FireLoad(LoadEvent event, LoadType loadType)
   at NHibernate.Impl.SessionImpl.Get(String entityName, Object id)
   at NHibernate.Impl.SessionImpl.Get(Type entityClass, Object id)
   at NHibernate.Impl.SessionImpl.Get[T](Object id)

Answer 1

显然这是一个已知问题：

http://forums.oracle.com/forums/message.jspa?messageID=4548988

引自上述网站：

这是一个已知问题 - 错误9793452。

这不是NHibernate调用rowcount，而是.NET框架。

如果我没记错的话，在最新的补丁级别中有11.2的补丁可用。 Backports到10204和10205正在进行中。行为不会发生在11107上。

Oracle ODBC RowCount上的OverFlowException

1 个答案: