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2317835 - Queries fail with signal 11 errors in dol__index_decompress_row - SAP ASE


  • Running SAP or custom applications using the 'index compression' functionality introduced in ASE 16.0
  • Table access (SELECT/DML queries) and
  • ASE maintenance jobs (like update index statistics and reorg rebuild) on affected tables
  • Fail with stacktrace errors in the ASE errorlog.
    • The stacktrace references the functions: dol__index_decompress_row, bt__lfrow_cmp
  • The affected table(s) can be identified from the SQL shown in the stacktrace
  • Or be detected via dbcc checktable/dbcc checkindex command.
  • Rebuilding the affected index does not help and error persists.



  • SAP Adaptive Server Enterprise (ASE) 16.0 for Business Suite
  • SAP Adaptive Server Enterprise (ASE) 16.0
  • SAP Enterprise Resource Planning (ERP) 6.0
  • SAP Solution Manager (SOLMAN) 7.1
  • SAP NetWeaver (NW) - All versions 


SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0


signal 11, dol__index_decompress_row, update index statistics, reorg rebuild, index, 798660, 758554 , KBA , BC-DB-SYB , SAP Business Suite on Sybase ASE Database Platform , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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