What are /r/mainframe's favorite Products & Services?

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It certainly would be intresting! A while ago I saw this modified version of the HECnet bridge that runs on Windows NT, and added the ability to do Ethernet_II / IPX frames, AppleTalk.. It looks like all that would be needed to do is add a filter to find SNA traffic. Although back in the day, I always used cisco routers, as the enterprise IOS supports not only bridging but mainframe local acknologment, which certainly helped out a LOT on slow links, or links with constant interruptions.

Why does this have to be OO? You're trying to execute the compiled COBOL on the Unix/Linux side?

Normally heterogeneous systems today would use HTTP-based REST APIs and pass around data in JSON, or maybe use the previously-favored XML. If you need to execute COBOL on the Unix side then check out GnuCOBOL.

Dr Woolbright has just published an Assembler Book on Amazon.

In Amazon Search for. Big Blue Assembler Book

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Here is the link as of Dec 5th, 2022

https://www.amazon.com/Big-Blue-Assembler-Book/dp/B0BLKWD3WD/ref=sr_1_1?crid=38WECBE3RPQ37&keywords=big+blue+assembler+book&qid=1670280232&sprefix=big+blue+assembler%2Caps%2C132&sr=8-1

Please don't take this as a criticism but in your next interview for a gig like this, definitely ask what OS you'll be supporting in your daily role. Not only does it give you a lead to do some preliminary studying before you begin work but it will also give an air of experience and preparedness.

It could also save you some headache as supporting z/VM, z/OS, z/TPF, z/Linux all have very different day to day tasks and responsibilities!

There's a book called What on Earth is a Mainframe. I suggest grabbing a copy and going through it. It's a bit dated (2008) but it will give you a foundation to build from if you are coming into mainframe with zero frame of reference. It goes over basic hardware and software concepts and covers some of the typical operations, jargon, and whatnot youll come across in your day to day.

IBM's redbooks are another resource I'd lean on heavily but you'll largely need to pick an OS to go down that path. Maybe reading some of the generic z/System architecture redbooks in the meantime might be helpful.

Best of luck in your new role! Feel free to DM with any questions!

Some years ago the IMS lab published a paper where they achieved 100k tps with a single IMS.

Most shops nowadays are Datasharing and Shared Queues so IMSplexs can handle the order of MILLIONS of transactions per second!!

You might want to check Red Hat Openshift on z:

https://www.openshift.com/blog/ibm-and-red-hat-bring-openshift-to-ibm-z-and-linuxone

Or the Open Mainframe project: https://www.openmainframeproject.org/