"Mikheev, Vadim" wrote:
>
> > >> Impractical ? Oracle does it.
> > >
> > >Oracle has MVCC?
> >
> > With restrictions, yes.
>
> What restrictions? Rollback segments size?
> Non-overwriting smgr can eat all disk space...
Is'nt the same true for an overwriting smgr ? ;)
> > You didn't know that? Vadim did ...
>
> Didn't I mention a few times that I was
> inspired by Oracle? -:)
How does it do MVCC with an overwriting storage manager ?
Could it possibly be a Postgres-inspired bolted-on hack
needed for better concurrency ?
BTW, are you aware how Interbase does its MVCC - is it more
like Oracle's way or like PostgreSQL's ?
----------------
Hannu