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Can anyone tell me links for reading about mainframe internals like what happens in mainframe intrenally when I login or create a dataset or submit a job. I googled but couldnt find

Thanks in advance

user1033111
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2 Answers2

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The Principles of Operation will give you as low-level a look at mainframe internals as you're likely to get.

You mention wanting to know what happens internally "when I login or create a dataset or submit a job." You might want to ask yourself, "login to what?" exactly. TSO? CICS? IMS?

For creating datasets you might start with DFSMS.

For submitting jobs you might want to start with JES2 or JES3, depending on which one you're using.

None of what you're asking is a small topic.

cschneid
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A mainframe is fundamentally just like any other computer - it is just a matter of scale that differentiates a mainframe from a desktop. Fundamentally, what happens when you log in to a Windows desktop is very similar to what happens when you log in to a mainframe. The details are very different but fundamentally you are doing the same thing.

The links cschneid provided in his answer will give you a lot of the finer detail, but conceptually, what goes on inside a mainframe is similar to what goes on in any computer these days.

Community
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NealB
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    If by 'mainframe', people are actually referring to an IBM mainframe running the z/OS (a.k.a. OS/390 & MVS) operating system, then the answer is that z/OS is fundamentally UNLIKE any other common OS (Windows/OS X/*nix). For an glimpse of these differences, try this : http://stackoverflow.com/questions/23042879/hasp373-and-ief403i-z-os-syslog/26523925#26523925 – Steve Ives Mar 11 '15 at 11:03