Mainframe, MVS and zOS Discussion

Has anyone here faced something similar or have a suggestion? Compiles on MFED but fails on z/OS. What differences should we check first? Thanks in advance for any pointers.

I have a situation in which Millions of rows into KSDS—REPRO tips, SORTIN tricks, and blocksize choices that boosted throughput? Thanks in advance for sharing your thoughts.

As part of my current work, I happened to run into a scenario where We want to split workload across tasks without corrupting shared files. Locking and checkpointing patterns? Appreciate any guidance or examples.

I have been working on what frameworks or patterns help you unit test pure COBOL logic before system integration? Thanks in advance for sharing your thoughts.

I've been working on something similar and ran into a few doubts. Programs do many MOVE group operations and we think it’s slowing I/O. Any micro‑optimizations or compiler flags that actually help? Thanks in advance for sharing your thoughts.

Looks like there is not much scope...

I also agree and disagree.

For someone like me who are not that experienced will be scrutinized badly because of this...I think, as on other Forums...

Thanks Robert defining ACB has helped.

Hello,

Since there are less number of mainframe developments going on nowadays (at least that is what I think) What is the current need of Mainframe Architects?

According to me,they will be needed

When we get a new mainframe client who was served by our competitors before.
When a high-level ...

Hi,

I've a program used in two jobs. There are 6 VSAM Files in use in this program. In first job, it uses all 6 VSAM files. In second job it uses only 3 VSAM files and other 3 files are marked as dummy, for the second job.

In second job, when the program try to open the dummy files it is giving ...