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3347405 - Query Plans are different for same SQL from different connections - SAP ASE

Symptom

  • In ASE when application is running SQL it is going for table scan.
  • But if we run the same SQL it is picking up index scan. 
  • This had been working, and all the sudden, the application is doing a table scan when executed, with dynamic sql. 
  • The only known change is that many mass inserts/deletes happen for refreshing data.


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Environment

SAP Adaptive Server Enterprise (ASE)

Product

SAP Adaptive Server Enterprise all versions

Keywords

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

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