VSE

VSE may refer to:

Business

Education

Science and technology

Sports, lifestyle and entertainment

VSE (operating system)

z/VSE (Virtual Storage Extended) is an operating system for IBM mainframe computers, the latest one in the DOS/360 lineage, which originated in 1965. It is less common than prominent z/OS and is mostly used on smaller machines. Primary z/VSE development occurs in IBM's Böblingen labs in Germany.

Overview

DOS/360 originally supported 24-bit addressing. As the underlying hardware evolved, VSE/ESA acquired support for 31-bit addressing. IBM released z/VSE Version 4 in 2007. z/VSE Version 4 requires 64-bit z/Architecture hardware and supports 64-bit real mode addressing. With z/VSE 5.1 (available since 2011) z/VSE introduced 64 bit virtual addressing and memory objects (chunks of virtual storage), that are allocated above 2 GB. The latest shipping release is z/VSE 5.2.0 - available since April 2014.

IBM recommends that z/VSE customers run Linux on z Systems alongside, on the same physical system, to provide another 64-bit application environment that can access and extend z/VSE applications and data via Hipersockets using a wide variety of middleware. CICS, one of the most popular enterprise transaction processing systems, is extremely popular among z/VSE users and now supports recent innovations such as Web services. DB2 is also available and popular.