Mainframe, MVS and zOS Discussion

As part of my current work, I happened to run into a scenario where Same SORT sometimes takes 3 minutes, sometimes 30. How do you pinpoint contention or dataset issues? Thanks in advance for sharing your thoughts.

I have been working on Planning huge KSDS across volumes. Any reliability/performance caveats? Appreciate any ideas or examples you can share.

I've been working on something similar and ran into a few doubts. We can’t mirror prod data. How do you reproduce tricky cases without it? Appreciate any ideas or examples you can share.

Has anyone here faced something similar or have a suggestion? looking for a standard pattern to record batch errors—schema, correlation IDs, and retention practice. Appreciate any ideas or examples you can share.

I have a situation in which Under load, a few transactions hit timeout. Which settings or code patterns gave you the most relief? Thanks in advance for your help and insights.

I have been working on Planning huge KSDS across volumes. Any reliability/performance caveats? Appreciate any ideas or examples you can share.

Hello,

I have a situation where a few transactions hit timeouts under load. What settings or code patterns have given you the most relief in such cases? Thanks in advance for your help and insights.

Hi,

This is asked in an interview that consider a GDG like G0001V00: when would you change the version from 00 to 01? My answer was, I have never done it but obviously the interviewer was looking for some better answer...appreciate if someone can help me in this.

HI All

Can anyone please help me in knowing e difference between setting the primary key and creating an index for a DB2 table? Why should we set the primary key as not NULL always?


Thanks in advance!