Symptom
Performance of query degraded in 16.x sp11 pl22 as compared to 15.x
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End of DFO Generation 2019-06-04 12:03:15.286225
End of DFO Transforms 2019-06-04 12:03:15.773290
End of DFO Shadowing 2019-06-04 12:03:21.495350
End of DFO PrePrepare 2019-06-04 12:04:04.181271 <-------- huge time gap contributing to performance degradation
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Environment
- IQ 16.0 SP11 PL22+
- IQ 16.1 All
Product
SAP IQ 16.0 ; SAP IQ 16.1
Keywords
performance , DFO , shadowing , "many group by","many DFO", "large DFO","End of DFO PrePrepare", , KBA , BC-SYB-IQ , Sybase IQ , Bug Filed
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