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  3. February 2026

RSS Visual Explain index advisor

Folks:

I'm a bit confused ... I've got a query that performs some joins and record
selections.

I ran it through visual explain (VE) and reviewed the indexes it
recommended.

I created those indexes and re-ran VE ... It no longer recommended those
indexes, but the diagram it showed remained the same. It appears that it
didn't actually USE the indexes it previously recommended.

When I viewed the indexes considered, the newly created indexes had a
reason code of 4 because the cost to use the access path was higher than
the cost of the chosen access path.

Any idea why it would recommend access paths and then disregard them once
they exist?

Thanks!

david

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