You can now truncate DB files in the latest version of Caché! Welcome to the 20th century! PS. a 4GB DB in a 10GB file isn't funny at all.

ObjectScript is a superset of MUMPS. Go read about it: http://en.wikipedia.org/wiki/MUMPS

To anyone wondering, this is a pure whine&bitch account for venting out frustration caused by InterSystems products.