>> If you intend to run a sweep on the source database after a backup, you
>> don't need to garbage collect in the source database during a backup,
>> thus using gbak -g is fine.
>
>
> On the other hand, the time spent garbage collecting during the backup
> reduces
> the time the sweep takes, so the net diffference is probably not measurable.

True, but with omitting garbage collection during the backup, one can
get a finished backup faster.

Regards,
Thomas