Lee Jay schrieb: One application instance can easily have multiple processes. Imagine you're doing an import, saving some metadata, and editing some images at the same time, and then add background processes like LR's discarding of 1:1 previews every so often and you can see how you don't need multiple instances to run into this issue. .. and LR will most probably use one internal queue for all processes to access the DB sequentially because SQLlite can not handle concurrent, multiple access, not over LAN nor on a local drive. If LR opens a DB (catalog) it places the lock (lrcat.lock file). So opening a remote second instance of LR and opening the same DB over a LAN is not possible anyway. The single access is not an issue as far as I can tell from my programing experience. Long story short: Everybody should test for themselves ... maybe keeping in mind that these FAQ's and other documentation on the SQLlite page is many years old, referring to very old Windows OS ... and maybe give it a try ... IMHO.
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