| Results found for: OS/390 |
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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.
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Entries before OS/390
OS/2 for Windows
OS/2 PM
OS/2 Warp
OS/2 Warp Connect
OS/360
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Entries after OS/390
OS/400
OS/8
OS-9
OS/9000
OS hardening
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