> Nothing you do to gbak is going to affect the amount of physical
> memory the server is using, or the amount of space the operating
> system allocates for its file cache.
>
>
> Are you using embedded or superserver?
>
> What is your page cache size?
>
> If you're running superserver, does the server memory usage increase?

I am using Firebird superserver 1.5.3 on Windows XP Prof. When I use
the Firebird server, the memory usage is normal and nothing strange
happen. The Page cache size for the database is 4096 (The default
size). I think it is easy to replay in your desktop too. Just grab a
database of size about 800M to 1G, then try do GBAK in command prompt.
While the backup is in progress, open task manager and notice how the
physical RAM is consuming.