code: public void commit() throws DBException, RemoteException
      {
          BaseTransport transport = this.createProxyTransport(COMMIT);
          Object strReturn = transport.sendMessageAndGetReply();
          Object objReturn = transport.convertReturnObject(strReturn);
          this.checkDBException(objReturn);
      }
docs: Commit the transactions since the last commit.
  Override this for SQL implementations.
  @exception DBException An exception.