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Null Reference Exception in ODP.Net when using Dapper #449

Closed as not planned
@marcwittke

Description

reopening #426 now with full trace

This is the exception I seein tests after bumping the ODP.Net managed library to versions above 23.5.1, here for example with 23.8.0

The error happens intermittently on different tests with different columns, sometimes it hits a column of a view, a table or a materialized view, but the error is always related to parsing Int64

System.Data.DataException: Error parsing column 3 (TRANSPORT_BOX_TYPE=0 - Int64)
System.Data.DataException
Error parsing column 3 (TRANSPORT_BOX_TYPE=0 - Int64)
 at Dapper.SqlMapper.ThrowDataException(Exception ex, Int32 index, IDataReader reader, Object value) in /_/Dapper/SqlMapper.cs:line 3966
 at Deserialize146af5cd-22c1-4930-9f42-b974b8529d1b(DbDataReader)
 at Dapper.SqlMapper.QueryRowAsync[T](IDbConnection cnn, Row row, Type effectiveType, CommandDefinition command)
 at Wombat.Adapters.Oracle.Dapper.SqlMapperExtensions.SingleOrDefaultAsync[T](IDbConnection connection, Int64 id, CancellationToken cancellationToken)
 at Wombat.Adapters.Oracle.Tsc.TransportBoxes.TransportBoxRepository.GetByIdAsync(TransportBoxId id, CancellationToken cancellationToken)
 at Wombat.Adapters.Oracle.Tsc.TransportBoxes.TransportBoxRepository.InsertAsync(TransportBox transportBox, CancellationToken cancellationToken)
 at Wombat.Domain.Tsc.TscTestDataProvider.InsertTransportBoxesAsync(Int32 count, ITransportBoxRepository transportBoxRepository, IIdGenerator`1 idGenerator, TransportBoxType transportBoxType)
 at Wombat.Adapters.Oracle.Tests.Tsc.TheTransportBoxRepository.<>c__DisplayClass24_0.<<CanQueryAvailableTransportBoxesByTransportBoxTypes>g__InsertTransportBoxesAsync|0>d.MoveNext()
--- End of stack trace from previous location ---
 at Wombat.Adapters.Oracle.Tests.Tsc.TheTransportBoxRepository.CanQueryAvailableTransportBoxesByTransportBoxTypes(TransportBoxType[] transportBoxTypes)
 at Xunit.Sdk.TestInvoker`1.<>c__DisplayClass47_0.<<InvokeTestMethodAsync>b__1>d.MoveNext()
--- End of stack trace from previous location ---
 at Xunit.Sdk.ExecutionTimer.AggregateAsync(Func`1 asyncAction)
 at Xunit.Sdk.ExceptionAggregator.RunAsync(Func`1 code)
System.NullReferenceException
Object reference not set to an instance of an object.
 at OracleInternal.ServiceObjects.OracleFailoverMgrImpl.OnError(OracleConnection connection, CallHistoryRecord chr, Object mi, Exception ex, Boolean bTopLevelCall, Boolean& bCanRecordNewCall)
 at Oracle.ManagedDataAccess.Client.OracleDataReader.GetValue(Int32 i)
 at Oracle.ManagedDataAccess.Client.OracleDataReader.get_Item(Int32 i)
 at Deserialize146af5cd-22c1-4930-9f42-b974b8529d1b(DbDataReader)

Full trace attached

RESHARPERTESTRUNNER.DLL_PID_596773_DATE_2025_04_24_TIME_10_31_26_024613.txt

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