SAP Knowledge Base Article - Preview

3210498 - A query that had been performing well, is now performing badly - SAP ASE

Symptom

  • Query running slower and using a less efficient plan:
  • Observations are:
    • MRU rather than LRU.
    • Nested Loop Join is now Merge Join.
    • But the default data cache is configured as LRU.
  • Why is the plan changing for this data set?


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Environment

SAP Adaptive Server Enterprise 15.7 SP 141

Product

SAP Adaptive Server Enterprise 15.7

Keywords

KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , How To

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