// returns true if DB was running
static bool shutDownDB(S dbID) {
  RemoteDB db = connectToDBOpt(dbID);
  if (db != null) {
    print("Shutting down DB " + dbID + "...");
    db.xshutdown();
    db.close();
    print("DB shut down.");
    true;
  } else {
    print("DB not running.");
    false;
  }
}