RDBPROD: Dynamic Optimizer Uses Wrong Background Index Resulting in Bad Performance
(Doc ID 1480189.1)
Last updated on FEBRUARY 22, 2019
Applies to:Oracle Rdb Server on OpenVMS - Version 7.1 to 188.8.131.52 [Release 7.1 to 7.2]
HP OpenVMS Itanium
HP OpenVMS Alpha
An index has been recreated. Prior to this, the performance was good and the optimizer strategy looked like:
Index INDEX_222 is now chosen as the second background index, which resulted in 7+580010 fetches instead of 5+3 fetches.
An index has been recreated.
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