System.Data - Crash during DataTable.Load

Question

Hello
I encountered a (random) crash of my executable during a DataTable.Load when i do a "select" request with a big CLOB (> 24000 characters).
I have coded a test and the error happen after 5 or 6 execution. I find a way to correct the problem by adding a Thread.Sleep after the DataTable.Load.
But it's clearly not a solution
DataTable myTable = new DataTable();
        myTable.Load(myReader);
=> This code crash
DataTable myTable = new DataTable();
        myTable.Load(myReader);
        Thread.Sleep(1000);
=> this code work
I have the same problem with a myReader.GetValue() and a myReader.GetString()
If someone could provide an explanation...
Thanks
My configuration : 
Oracle driver : OraOleDb v11.1.0.6
My assembly if compiled on Framework 4.0 x86
Here is the detail of the exception : 
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.AccessViolationException
Stack:
   at System.Data.Common.UnsafeNativeMethods+IRowset.GetData(IntPtr, IntPtr, IntPtr)
   at System.Data.OleDb.OleDbDataReader.GetRowDataFromHandle()
   at System.Data.OleDb.OleDbDataReader.GetValueBinding(System.Data.OleDb.MetaData)
   at System.Data.OleDb.OleDbDataReader.GetValues(System.Object[])
   at System.Data.ProviderBase.DataReaderContainer+CommonLanguageSubsetDataReader.GetValues(System.Object[])
   at System.Data.ProviderBase.SchemaMapping.LoadDataRow()
   at System.Data.Common.DataAdapter.FillLoadDataRow(System.Data.ProviderBase.SchemaMapping)
   at System.Data.Common.DataAdapter.FillFromReader(System.Data.DataSet, System.Data.DataTable, System.String, System.Data.ProviderBase.DataReaderContainer, Int32, Int32, System.Data.DataColumn, System.Object)
   at System.Data.Common.DataAdapter.Fill(System.Data.DataTable[], System.Data.IDataReader, Int32, Int32)
   at System.Data.Common.LoadAdapter.FillFromReader(System.Data.DataTable[], System.Data.IDataReader, Int32, Int32)
   at System.Data.DataTable.Load(System.Data.IDataReader, System.Data.LoadOption, System.Data.FillErrorEventHandler)
   at eWorkflow.Dal.Dal.DalBase.ExecuteReader(System.String)

Answer 1

Hi,
Sorry so late to answer your question.
Per my understanding, you have load a large of data,and don't have enough memory.
But form the exception Info: System.AccessViolationException
It seems as joel said, maybe some others attempt to read/write the same data. Please exclude these
factors and try again.  Good Luck!Best wishes!
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