Tag Archives: zOS

Date and Time in Dataset Names vs GDGs (Generation Data Groups)

Posted on 24 December 2022 by ismet

Recently We were talking about the difficulties of finding backup times for IBM mainframe restore jobs. The date and time of creation in GDG dataset names can be found in the tape management database. Another option would be to use … Continue reading →

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Global Resource Serialization for zOS – To Serialize or Not To Serialize

Posted on 08 December 2016 by ismet

Summary This Article summarizes concepts of GRS in IBM zOS mainframe systems explaining how data sharing is performed in a multi-system environment. It also illustrates design specifications of related products. Finally operational aspects for different topologies are described. Introduction As … Continue reading →

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IT Security Audits for IBM zOS Systems from Top Secret Perspective

Posted on 11 February 2014 by ismet

An information technology security audit is a manual or systematic measurable technical assessment of an information system. Manual assessments include interviewing staff, performing security vulnerability scans, reviewing application and operating system access controls, and analyzing physical access to the systems. … Continue reading →

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BMC Control-M and Control-O Products on zOS

Posted on 07 June 2013 by ismet

Job scheduling and console automation are very important operational characteristics of high-end enterprise data centers. Control-M and Control-O are nice pieces of BMC software to achieve high service levels. I will tell how to use these tools in customer installations. … Continue reading →

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zSecure Installation and Operation

Posted on 01 May 2013 by ismet

zSecure is a suite of security products to improve management of System z security environment. zSecure Admin and zSecure Visual components are the ones I installed and reconfigured recently. zSecure Admin lets security administrator perform more productive and zSecure Visual … Continue reading →

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SMP/E HOLDERROR Processing in IBM System z Software Management

Posted on 10 April 2013 by ismet

Recent discussions with some colleagues showed me that this is an area which requires some clarification. SMP/E (System Management Program/Extended) is the tool for performing maintenance on z/OS systems and System z components like DB/2, CICS, WAS etc. Program products … Continue reading →

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Increasing Number of CHPIDs (Channel Path Identifiers) for LCUs (Logical Control Units)

Posted on 30 January 2013 by ismet

The channel subsystem (CSS) and the IBM z/OS operating system need to know what hardware resources are available in the computer system and how these resources are connected. This information is called hardware configuration. Hardware Configuration Definition (HCD) provides an … Continue reading →

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Shortening z/OS Recycling Time

Posted on 07 May 2012 by ismet

IBM System z server workloads are comprised of heterogeneous transaction types. DB2 queries, WAS (Websphere Application Server), Websphere MQ (Message Queueing oriented middleware), CICS TS, CTG (CICS Transaction Gateway), RDZ (Rational Developer for System z), IMS (Information Management System) transactions. … Continue reading →

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Daylight Saving Time Settings in IBM Mainframes – IBM Büyük Sistemlerde Yaz Saati Uygulaması

Posted on 29 October 2011 by ismet

Donanım ve yazılım platformlarında saatlerin ileri ve geri alınması genellikle otomatik olarak gerçekleşir. IBM büyük sistemlerde bu işlemler otomatik olarak yapılmaz.Önce zaman kavramlarını gözden geçirelim. Kullandığımız yerel saat, bulunduğumuz boylamın Greenwich kasabasından uzaklığıyla orantılı olarak belirlenmiştir. Greenwich kasabasındaki saate GMT … Continue reading →

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Migration of System z Servers

Posted on 21 June 2011 by ismet

In Memory of Levent Durdu Perfect friend, unfailing colleague, guiding leader we lost very early 1955 – 24 April 2008 Levent Durdu Anısına Erken yitirdiğimiz mükemmel dost, yorulmaz iş arkadaşı, yol gösterici lider 1955 – 24 Nisan 2008 Existing Environments … Continue reading →

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