docs: @Override
    public final void
      rollBackTransaction(final String pSavepointName) throws Exception {
      //according https://code.google.com/p/android/issues/detail?id=38706
      //its very easy to make simple things complicated
      if (getLogger().getIsShowDebugMessagesFor(getClass())) {
        getLogger().debug(null, SrvDatabase.class,
          "try to rollback to savepoint: " + pSavepointName);
      }
      executeQuery(";ROLLBACK TRANSACTION TO SAVEPOINT " + pSavepointName + ";");
    }