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OS/390

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The primary operating system used in IBM mainframes. OS/390 was originally the MVS/ESA operating system renamed and repackaged in 1996 with an extensive set of utilities. Although the name MVS is still used to refer to the base control program of OS/390, enhancements in usability and workload balancing have made OS/390 stand apart from its MVS heritage. OS/390 is upward compatible from MVS/ESA 5.2.2, but downward compatibility is not ensured.

(operating system)OS/390 - An IBM mainframe operating system, featuring integrated MVS, UNIX, LAN, distributed computing and application enablement services through its base elements. These base services enable open, distributed processing and offer a foundation for object-ready application development. The OS/390 base includes a Communication Server that includes VTAM, the VTAM AnyNet feature, TCP/IP and TIOC. It provides SNA (3270), APPC, High Performance Routing, ATM support, sockets and RPC.

OS/390 is basically rebranded, repackaged MVS/OE, CMOS processors, RAMAC disk arrays and open systems extension to networking in VTAM, the principle being that if you can't compete, rebrand what you have and tell everyone it's something new.

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LegacyPoint, is the first event management product to enable two-way communication between OS/390 systems and HP OpenView VantagePoint (formerly IT/O).
SINGLEPOINT SYSTEMS UNVEILS LEGACYPOINT AT HPWORLD by EDP Weekly's IT Monitor
Quest Spotlight on DB2 UDB and Quest Spotlight on DB2 OS/390 Help to Pinpoint Performance Problems for Rapid Resolution
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Nasdaq: LDMK), a provider of software products and services that help organizations manage critical information technology systems and e-business operations, announced that IBM has selected Landmark's products to accompany its OS/390 SystemPac program offerings for worldwide distribution.
IBM TO DISTRIBUTE LANDMARK SOLUTIONS TO CUSTOMERS by EDP Weekly's IT Monitor
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