Tag Archives: zOS

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

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

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

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

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

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)

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

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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