Re: Multi-Versions and Vacuum -- cf Oracle & Vacuum alt

Anthony Berglas wrote:
> Thanks for doing the test in Oracle. What I did not see is you setting the
> Isolation Level. Or maybe that is what I forgot to do when I did similar
> tests some time ago! (I don't have Oracle handy or I'd try again.)
>
> However, the point remains, that there is no reason why PostgreSQL could not
> provide more serialized transactions in Read Committed mode without taking
> the hits with rollback that Serializable mode gives.

Yes, we could probably do it, but it doesn't make sense for SELECT to
use SERIALIZABLE while in the same transaction UPDATE/DELETE is using
READ COMMITTED. Seems that would cause all sorts of confusion.

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