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OS/390 is an IBM operating system for the System/370 and System/390 IBM mainframe computers. It is basically a rebranded version of MVS with added Unix services. 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 was introduced in late 1995 and was itself rebranded in December 20012001 is a common year starting on Monday (see link for calendar), and also: The International Year of the Volunteer The United Nations Year of Dialogue Among Civilizations Events January January 1 A black monolith measuring approximately nine feet tall ap and extended to 64 bit processors and is currently called z/OSz/OS is a 64-bit server operating system from IBM. It is the new name for the existing IBM mainframe system OS/390, combining MVS and UNIX System Services (a mainframe implementation of Unix formerly known as MVS Open Edition). While retaining many featur. IBM has announced that support for OS/390-branded versions will be discontinued in 20042004 is a leap year starting on Thursday (the link is to a full 2004 calendar), and has also been designated the: International Year of Rice International Year to Commemorate the Struggle against Slavery and its Abolition Elections are to be held in 73 co.

References

This article was originally based on material from the Free On-line Dictionary of Computing, which is used under the GFDL.

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