Mm, my understanding is that it's for a few reasons: - Oracle have good name recognition (no one ever fired for using Oracle), presumably an army of support pe

Mm, my understanding is that it's for a few reasons: - Oracle have good name recognition (no one ever fired for using Oracle), presumably an army of support people, well trained consultants, etc. - Postgres traditionally has not been as perforrmant, which makes it less useful for very large datasets. - Furthermore Oracle perf can usually be improved further by hinting properly, which is not possible in Postgres. Certainly moving like-for-like onto postgres simply led to perf regressions. I'm not an expert, but those were my main takeaways from talking to people who are.