Re: Plans for solving the VACUUM problem

"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