My understanding is that this is because a temporary file needs to be created next to the db in WAL mode so write permissions are necessary on on directory. (ht

My understanding is that this is because a temporary file needs to be created next to the db in WAL mode so write permissions are necessary on on directory. (https://www.sqlite.org/tempfiles.html https://www.sqlite.org/tempfiles.html, search for 'WAL')