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DNSB · 07-07-2023, 01:24 PM

I've seen a calibre library with well over 250,000 books. In theory, the SQLite database used to store the library information could handle up to 2,147,483,646 entries though that could result in a 140TB database.

As to why you are having books disappear, you might want to check in the calibre forum. That was a known issue where file/directory locking prevented calibre from removing a book when, for instance, the author name was changed. A search for 'file locking' in the calibre forum will come up with more information. A couple of threads that might be helpful are Calibre deleting files after edit metadata and Books missing from library but showing metadata?.

07-07-2023, 01:24 PM	#2
DNSB Bibliophagist Posts: 46,564 Karma: 169115148 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	I've seen a calibre library with well over 250,000 books. In theory, the SQLite database used to store the library information could handle up to 2,147,483,646 entries though that could result in a 140TB database. As to why you are having books disappear, you might want to check in the calibre forum. That was a known issue where file/directory locking prevented calibre from removing a book when, for instance, the author name was changed. A search for 'file locking' in the calibre forum will come up with more information. A couple of threads that might be helpful are Calibre deleting files after edit metadata and Books missing from library but showing metadata?.