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2539605 - MissingMethodException: Method not found: 'IntPtr System.Runtime.InteropServices.Marshal.GetFunctionPointerForDelegate(!!0)'. - SAP IQ 16.1


  • Upgrading to IQ Network Client (IQNC) 16.1 SP02 from IQNC 16.0 GA.
  • An application received an exception after iAnywhere.Data.SQLAnywhere.v4.0 dll was replaced with Sap.Data.SQLAnywhere.v4.5 and the artifacts were recompiled:

ERROR - System.ApplicationException: I tried 101 times. Now allowing exception to be counted. --->
System.ApplicationException: A SQL exception occurred.
select message_id from applogging.message_codes
where message_code_ns = ? and message_code = ?.
ICommandCreation type: DbStorageLite.db.SqlAnywhereDb+CommandCreation.
---> System.MissingMethodException: Method not found: 'IntPtr System.Runtime.InteropServices.Marshal.GetFunctionPointerForDelegate(!!0)'.
   at Sap.Data.SQLAnywhere.SACommand._ExecuteReader(CommandBehavior commandBehavior, Boolean isExecuteScalar, Boolean isBeginExecuteReader)
   at Sap.Data.SQLAnywhere.SACommand.ExecuteScalar()
   at DbStorageLite.db.DbCore`1.ExecuteScalar(SQL sql, Object[] parameters)
   --- End of inner exception stack trace ---
   at DbStorageLite.db.DbCore`1.ExecuteScalar(SQL sql, Object[] parameters)
   at DbStorageLite.db.DbBase`1.ExecuteScalarNullableLong(SQL sql, Object[] parameters)
   at LogLib.MessageCodeCache.GetMessageCodeIdSQL(MessageCode messageCode)
   at LogLib.MessageCodeCache.GetMessageCodeId(MessageCode messageCode)
   at LogLib.MessageCodeCache.GetMessageCodeId(IAnalyticsMessage message)
   at LogLib.SqlWriter.Insert(IAnalyticsMessage message, IQWriter iqWriter)
   at ZLogService.QReader.HandleMessage(String msg)
   --- End of inner exception stack trace ---

  • The issue exists on one Windows 2008 box only. There is another Windows installation that is working fine with IQNC 16.1.



  • SAP IQ 16.1 SP02
  • ADO.Net 
  • Microsoft Windows 2008


SAP Sybase IQ 15.4


.NET, Framework, Marshal, GetFunctionPointerForDelegate, delegate, unmanaged , KBA , BC-SYB-IQ , Sybase IQ , Problem

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