With this setting you can specify in which directory the Blob-files are stored. The db4o-Blobs are stored outside the database file as regular files. With this settings you can set where this directory is. The default is the 'blob'-directory.
EmbeddedConfiguration configuration = Db4oEmbedded.newConfiguration(); try { configuration.file().blobPath("myBlobDirectory"); } catch (IOException e) { e.printStackTrace(); }