HenPlus.msg().println("cancel statement...");
HenPlus.msg().flush();
final CancelWriter info = new CancelWriter(HenPlus.msg());
info.print("please wait");
_stmt.cancel();
info.cancel();
HenPlus.msg().println("done.");
_running = false;
} catch (final Exception e) {
Logger.debug("Exception while cancelling a statement: ", e);
}