On the matter of Micro Systems Inc. and its likely new parent, Oracle Corp., Alan Hayman is upbeat. Columbia-based Micros provides point-of-sale (POS) hardware and software for restaurants, retailers, hotels and other customers. Hayman, a former Micros executive vice president, ran U.S. operations for the restaurant side of the business between 2000 and 2006. "In general, I think this is probably more important to Oracle than it is to Micros," Hayman said. The $5.3 billion deal, slated to close…