The purpose of this exercise is to reformat the JOB accounting information across, primarily TWS, JOB libraries, but others will follow.
I had planned to ZAP the libraries in-place using special authorization.
I was hoping to use IEBUPDTE for these reasons:
- To update only the top line
- To have no possibility of changing any other lines
- To do this for some 100,000 members, across 10 or more libraries, very fast
It seems, as I cannot guarantee that any member of any library uses standard numbering (ISPF
NUM;RENUM), that IEBUPDTE is not a good candidate?
I am changing strategy.
Now I have decided to migrate the process to our mirror production system on the development sysplex.
Here we have a controlled, if cumbersome, process for this sort of mass-change.
As alwas it will take careful timing to effect this without overwriting concurrent changes.
I suspect overnight or weekend activities ahead?

I will
- load the identified members into what we call a develoment library (one for each source library).
- run my reformatter into separate libraries (")
- write a process in REXX to copy the JOBcard of each (")