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In der Informatik sind einige Fachleute der Meinung, dass das Mainframe Computing seine bedeutende Zeit berschritten hat. In den letzten 10 Jahren ist die Mainframe-Ausbildung weiter eingeschränkt worden, d.h., Vorlesungen für interessierte Studenten an deutschen Universitäten und Fachhochschulen existieren teilweise nur noch online im E-Learning. Das betrifft auch die dazugehörigen praktischen Übungen.
Diese Entwicklung widerspricht insgesamt dem Bedarf von Gro rechner-Fachpersonal in mittleren und gro en Unternehmen. In diesem Bereich ist das Problem dadurch gewachsen, dass Mitarbeiter in den Ruhestand gewechselt sind und nicht mehr zur Verfügung stehen.
In dem Buch Einführung in z/OS und OS/390 wurde bereits zu diesem Thema Stellung bezogen. Der Ist-Zustand von Mainframe-Fachpersonal auf dem IT-Arbeitsmarkt ist weiter geschrumpft. Die Universität Leipzig hat zusammen mit dem Institut für Informatik der Universitt Tübingen in der Vergangenheit versucht, diesen Prozess aufzuhalten. Es wurden Vorlesungen in Leipzig, Tübingen, Frankfurt (Frankfurt School of Finance & Management) zum Thema Mainframe Server gehalten in der Hoffnung, Studenten und Interessenten in das Mainframe Computing einzuführen.
Das vorliegende Lehrbuch Mainframe System z Computing enthält wesentliche Änderungen gegenüber der 1. Auflage des Buches Einführung in z/OS und OS/390. Dazu zählen vordergründig Kapitel zur Hardware aktueller IBM-System-z-Server (z12, z15, z16). Es gibt insbesondere praktische Erkenntnisse und Erfahrungen zu den Themen DB2, IMS, CICS, WebSphere MQ, SMF und z/OS Connect EE. Das betrifft z.T. Nutzer mit normalen und auch solche mit Administrator-Rechten.
Dr. rer. nat. Paul Herrmann
ist IBM Mainframe-Projekt-Verantwortlicher am Institut für Informatik der Universität Leipzig. Er ist zuständig für Lehre und Forschung auf dem Gebiet der Großrechentechnik, für Hard- und Software des IBM zSeries Server z114. Seit 2000 ist er verantwortlicher System-Manager für IBM Großrechner-Systeme und wurde von der Firma IBM Deutschland mehrfach zum "System-Manager des Jahres" ausgezeichnet. Er betreute zahlreiche Bachelor- und Master-Arbeiten in
diesem Bereich und veröffentlichte diverse Publikationen.
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