Which is why I was more looking at what could help you and me understand the issue rather than a solution :) I don't have a minimal sample, and sending you the entirety of the code probably won't help, and if I were you I'd be annoyed if someone was to send me a big chunk with no details, I totally understand this. Is there a way to trace the sqlite API calls? AFAICS I can only the requests themselves and the connection being closed (well basically what SQLITE_TRACE allows)