> > Garbage is not much problem - it can be removed
> > by sweep, but sooner or later it will be removed
> > by normal cooperative garbage collection anyway.
> >
>
> so Ivan - tell me - would you recommend / see any real use in setting a
> sweep operation on your db every night?

Sure
* it is better to get rid of garbage when the system has nothing better to do
* with nightly sweep you do not have to worry about possibly stuck OIT
(so you will not forget to do as sweep when its need arises)

Ivan