SAP Knowledge Base Article - Preview

2145773 - avoid_zero_weight_histograms leads to poor index selection - SAP ASE

Symptom

  • Poor query performance.
  • Incorrect index selection.
  • Excessive logical I/O.


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Environment

  • SAP Adaptive Server Enterprise (ASE) 15.7 for Business Suite
  • SAP Adaptive Server Enterprise (ASE) 16.0 for Business Suite
  • SAP NetWeaver (NW) - All versions
  • SAP Adaptive Server Enterprise (ASE) 15.7 and 16.0

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0

Keywords

optlevel, optcriteria avoid_zero_weight_histograms, CR771286, CR#771286, 771286 , KBA , BC-DB-SYB , Business Suite on Adaptive Server Enterprise , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BW-SYS-DB-SYB , BW on Adaptive Server Enterprise , Bug Filed

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