Mainframe, Performance, Topic podcast Episode 30 has been released

Here's the short show notes. For the long detailed show notes (with more complete reference links), see the Mainframe, Performance, Topic website .

This episode is titled for our Topics Topics on choosing the right programming language for the job. We have a special guest joining us for the performance topic, Scott Ballentine.

What’s New

• New news for CustomPac removal date, which has been extended past January 2022. The reason was to accommodate the desired Data Set Merge capability in z/OSMF which customers needed. For the new withdrawal date, it is planned to be announced in 2Q2022.

Mainframe - Only in V2.5

• This topic was looking at some new functions that are only in z/OS V2.5.
• Data Set File System, planned to be available in 1Q 2022.
• Dynamic Change Master Catalog
• RACF data base encryption has a statement of direction.
• Increase z/OS Memory limit above?4TB to 16TB.
• More Concurrently ”Open” VSAM Linear Datasets. Db2 exploits with Apar PH09189, and APAR PH33238 is suggested.
• ISPF Updates to ISPF in support of PDSE V2 member generations, and SUBMIT command to add an optional parameter SUBSYS.
• Access Method Services - IDCAMS - DELETE MASK has two new options?TEST and EXCLUDE
• z/OS Encryption Readiness Technology?zERT
• There’s a lot of other stuff rolled back to V2.4

Performance - What's the Use? - with special guest Scott Ballentine

• This discussion is a summary from a joint presentation on Usage Data and?IFAUSAGE
• The topic is motivational because customers can get a lot of value of out this usage data, and understand the provenance of IFAUSAGE data.
• A macro vendors or anybody use can use to show which products are used and how. It can show names: Product Vendor, Name, ID, Version, Qualifier, Show numbers: Product TCB, Product SRB, FUNCTIONDATA
• The data is ostensibly for SCRT, which is fed by?SMF 70?and?SMF 89
• Scott talked about encoding via IFAUSAGE, appears in SMF 30 and 89-1
• SMF 89-1: Software Levels query, Db2 / MQ subsystems query
• SMF 30: Topology (e.g. CICS connecting to Db2 or MQ), Some numbers (Connections’ CPU)
• Both SMF 30 and 89: FUNCTIONDATA
• Examples were mentioned that might inspire developers to think about how they code IFAUSAGE
• Hope is developers will delight customers by using IFAUSAGE right, and customers will take advantage in the way shown with reporting examples.

Topics - Choices, Choices

• This topics is about how to choose a language to use for which purpose. Different languages were discussed for different needs.
• Use Case: Serving HTML?
• Host consideration: Running on e.g. laptop?
• Host consideration: Running on z/OS?
• Overall lesson: Choose the language that respects the problem at hand.

On the blog

• Marna's blog is?here
• Martin has quite a few new blog articles?here

So It Goes