SAP Knowledge Base Article - Preview

2739047 - AccessViolationException when closing a non-existing cmd structure - SDK for SAP ASE

Symptom

Cancelling command and then trying to close the data reader it crashes:
System.AccessViolationException "Attempted to read or write protected memory."
at Sybase.Data.AseClient.Unmanaged.CMD_PerformGetNextResultSet(IntPtr pCommand, IntPtr& ppResultSet, Int32& hasNext, Int32& curPos, Int32& IsSamePdu, Byte& rmtType)
at Sybase.Data.AseClient.AseDataReader.RetrieveNextResult()
at Sybase.Data.AseClient.AseDataReader.GetNextResult(Boolean isNeedProcessOutParams)
at Sybase.Data.AseClient.AseDataReader.NextResult()
at Sybase.Data.AseClient.AseDataReader.CloseUrsHandle()
at Sybase.Data.AseClient.AseDataReader.Close()
at Simple.Form1.btnConnect_Click(Object sender, EventArgs e) in
Form1.cs:line 299


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Environment

  • SAP Sybase Software Developer Kit (SDK) 15.7
  • SAP Adaptive Server Enterprise (ASE) Software Developer Kit (SDK) 16.0
  • Adaptive Server Enterprise ADO.NET Data Provider
    • 3.5 Provider ( Sybase.AdoNet35.AseClient.dll )
    • 4.0 Provider ( Sybase.AdoNet4.AseClient.dll )
    • 4.5 Provider ( Sybase.AdoNet45.AseClient.dll )
  • Microsoft Windows x64 (64-bit)
  • .Net

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0 ; SAP Adaptive Server Enterprise SDK 16.0 ; Sybase Software Developer Kit 15.7

Keywords

CR817922, CR#817922, CR# 817922, access, violation , KBA , BC-SYB-SDK , SDK , Problem

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