Class.forName("org.sqlite.JDBC");
SQLiteConfig config = new SQLiteConfig();
config.setReadOnly(true);
config.setSharedCache(true);
config.setReadUncommited(true);
conn = DriverManager.getConnection("jdbc:sqlite:" + dbfile, config.toProperties());
ps = conn.prepareStatement("SELECT b.ccs_id_outer AS ccs_id_outer, "
+ "b.ccs_id_inner AS ccs_id_inner, "
+ "b.count_yes AS count_yes, "