Sun Microsystems | 157,187 followers on LinkedIn. The Network is the Computer. | Sun Microsystems, Inc. is a wholly owned subsidiary of Oracle Corporation. Oracle Corporation, an enterprise software company, engages in the development, manufacture, distribution, servicing, and marketing of database, middleware, and application software worldwide. With the acquisition of Sun Microsystems, Oracle also owns Solaris, Java, MySQL and the Sun line of storage, server and network hardware.