[tn4w]

I'd like to see this feature as I often get the "database is locked" error. There is a script I run which continuously adds books to Calibre. While it is running, sometimes I want to check how many books are added and check added book covers.

What about introducing a command line switch which makes the program copy the default library database file with a temporary file name when starting the program and loads the copied database and deletes it after closing the program?