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>Write caching is controlled at the OS level. If there is a problem with cache coherency in a write-behind controller, you'll see it in ALL apps that write to disk, not just file-based databases. Conversely, if it's working properly, it'll be fine for all apps.


That's not completely true. Take Word for example. User opens a Word document, modifies it, and saves it. It is a rare that a second user will need the Word document immediately. Because of the way database applications are used, the caching is much more apparent.