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Questions tagged [mainframe]

Use this tag for questions related to the IBM z Systems machines and their predecessors ever since the System/360, as well as their operating systems, such as z/OS and Linux on z Systems.

The mainframe tag covers:

  • the IBM z Systems machines and their predecessors ever since the System/360
  • their operating systems, such as z/OS and Linux on z Systems.
18 questions
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2.5 inch drives versus 3.5 inch drives

I am looking for some publicly available comparisons between 2.5 inch drives and 3.5 inch drives. What I had assumed is that a 2.5 inch 15k drive and a 3.5 inch 15k drive would have identical performance, however I was shown some benchmarks recently…
Basil
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Importance of Mainframe

Is the usage of mainframe decreasing now a days?
BALA
6
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2 answers

How to compare mainframe CPU performance?

I am working with an application that runs on tomcat in OMVS. It run terribly on one mainframe, and adequately another another. Is there a way I can compare the CPU of the two mainframes as a reference? I tried: /d m=cpu I didn't find the results…
GC_
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Why is it especially bad to reboot a mainframe?

This is something I've heard a lot throughout my career, from practically every mainframe operator/admin I've ever worked with, and up until now, I never really questioned it, or had a reason to care one way or another. Never reboot a mainframe,…
HopelessN00b
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How to get started on Mainframes and is it worth while?

Is mainframe administration still a viable field to go into? And if it is where would you get started on learning how to administer and program against a mainframe?
John
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3
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Can z/VSE expose data via SOAP/REST?

I work for a large organization still using an IBM mainframe on z/VSE 5.1. Today we interact with the system over flat files exclusively (to get data out of the system or pass data in). Does anyone have experience exposing data in another manner?…
Killnine
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Would you ever use or suggest a midrange or mainframe for a new project?

Calling all system admins! Would you ever consider starting to use a IBM midrange / mainframe / power series / HP Integrety server instead of x86/x64 for a "new" project ? Does anyone even care about these types of platforms anymore ? What are your…
JJ01
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Does block size matter when allocating a PDS under z/OS?

When trying to create a new PDS, I have the primary and secondary allocations both set to 10 cylinders. The data set itself is an FB 255 but there's one parameter it's asking for which has me flummoxed. That's the block size. This has defaulted to…
user12022
3
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0 answers

Mainframe VSE configuration questions for a new Systems Admin for VSE

I am not new to mainframe but I am new to the System Administrator side of configuring a mainframe. I have mostly been on the production control/computer operations side of the Mainframe. I was wondering if any one can share with my some resources…
Andre
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z/OS Protecting Master Catalog from AdHoc updates

I have a development system that multiple developers are working on. The current configuration allows any request for a new dataset to be catalogued in the Master catalog. To protect the master catalog from writes apart from authorized system…
Hogstrom
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Install Zend Server on z/Linux (s390x) from Zend repos

I'm trying to install Zend Server in a z/Linux (Red Hat with kernel 2.6.18-194.el5 s390x) with yum install zend-server-ce-php-5.3 with the repos configured as explained in Manually Installing Zend Server page. the s390x folder is missing in…
corretge
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how to benchmark dbms (sql and nosql) on s390x architecture (IBM mainframes basically)

I have access to an s390x machine, a zbc12 to be precise, with 32GB of RAM, which I can use as a lab for a few months(!). I wanted to explore this architecture capabilities, especially relating to dbms, and I'd like to test both sql and nosql.…
dada216
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Manage multiple zLinux SuSE Servers

My shop virtualizes a few hundred SuSE 11.1 servers through IBM's zVM hypervisor. (If you've never heard of zVM, it runs on a mainframe and virtualizes Linux in the s390x architecture. It's a different beast than most of you are used to. The guys…
aus
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Mainframes in every day life

What are some examples of people using mainframes in every day life? Also, is it apparent really to the end-user that such a thing is running on a mainframe? I know ATM machines often use mainframes. Supposedly Farmland does too.
thehollow89
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Approximate pricing for IBM Z?

I am bidding on a small- to medium-sized job for developing a Java application to eventually be deployed on IBM's System Z. I'm very excited about it and though quite frankly I've had very little if any cross-platform compatibility issues with any…
Jé Queue
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