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2273429 - System.AccessViolationException in ADO.NET - SAP SDK

Symptom

**** INTERNAL USE ONLY  ****

THIS KBA is going to internal for awhile. The fix that engineering made did not fix this customer's issue.

  • ADO.NET provider error System.AccessViolation Exception.
  • The stack shows:

Unhandled Exception: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at Sybase.Data.AseClient.Unmanaged.OpenConnection(IntPtr pConnection, String[] connPropNames, String[] connPropValues, Int32 size)
   at Sybase.Data.AseClient.AseConnectionImpl.Open()
   at Sybase.Data.AseClient.AseConnectionPool.GetConnection(AseConnection conn)
   at Sybase.Data.AseClient1.AseConnection.Open()
   at Sybase.Data.AseClient.AseConnection.Open()
   at TestSybase.Program.DealogicDatabase_ExecuteReder_Test(String connectionString, String sql, Int32 n) in c:\repro\TestSybase\Program.cs:line 65
   at TestSybase.Program.<>c__DisplayClass2.<RunTest1>b__0(Int32 n) in c:\repro\TestSybase\Program.cs:line 54
   at System.Threading.Tasks.Parallel.<>c__DisplayClassf`1.<ForWorker>b__c()
   at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)
   at System.Threading.Tasks.Task.<>c__DisplayClass11.<ExecuteSelfReplicating>b__10(Object param0)
   at System.Threading.Tasks.Task.Execute()
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot)
   at System.Threading.Tasks.Task.ExecuteEntry(Boolean bPreventDoubleExecution)
   at System.Threading.ThreadPoolWorkQueue.Dispatch()


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Environment

  • SAP Sybase Software Developers Kit (SDK) 15.7
  • SAP Software Developers Kit (SDK) for Adaptive Server Enterprise (ASE) 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 ) (only in SDK 16.0 SP01 PL00 and higher)
  • Microsoft Visual Studio 2013

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0 ; SAP Adaptive Server Enterprise SDK 16.0 ; Sybase Adaptive Server Enterprise 15.5 ; Sybase Software Developer Kit 15.7

Keywords

.NET, VB, ASE, Connection, Provider, CR795269, CR#795269, 795269,  spinlock, ADONET , KBA , BC-SYB-SDK , SDK , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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