SAP Knowledge Base Article - Preview

2257096 - SAP IQ16 SP10.7 : 'Union' Query caused error 'dfo.cxx .. Parallel Combiner'

Symptom

During migration project, 'dfo.cxx .. Parallel Combiner' error is retured when executing select query
including union all. This error has been produced since applied SP10.7 which fixed some 'Union' issues.

 *  iqmsg & stack =>

      *****************************************************
      **
      **       Non-Fatal IQ Internal Error Detected
      **       at dflib/dfo.cxx:1969  on thread 1359 (TID 1350)
      **       with Query_Name: Error_2244_1969
      **       Error detected at DFO #401 Parallel Combiner
      ..
      .. StackTraceForThisThreadPKciS0_S0_S0_ ..
      .. df_ExceptionC1EPKciNS_df_ErrorCodeES1_S1_ ..
      .. df_Exception..ThrowExceptionEPKciNS_ ..
      .. dfo..ConstructWorkAllocatorInternal ..
      .. dfo..ConstructWorkAllocator ..
      .. dfo_Combiner..SourcePreFetchEv ..
      .. dfo_Combiner.FetchOpusEv ..
      .. dfo_FetchEv ..
      .. dfjo_Hash..Fetch_T2_IntoHashEv ..
      .. dfjo_Hash.ExecWorkERij ..
      .. workAllocator.DoWorkEj ..


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Environment

SAP IQ 16.0

Product

SAP IQ 16.0 ; SAP Sybase IQ 15.2 ; SAP Sybase IQ 15.4 ; Sybase IQ 12.7

Keywords

'dfo.cxx:1969' ; 'Parallel Combiner' ; 'dfo_Combiner..SourcePreFetch' ; 'dfo_Combiner.FetchOpus' ; , KBA , BC-SYB-IQ , Sybase IQ , Bug Filed

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