Re: Does an Relative Record number ever change

In the versions I was working, no RRN, since the software from IBM ran on multiple systems, mainframe, S/36, and S/38. I’m sure the RRN was in the somewhere but I was just dealing with the forward/look back links in the software, A very early MAPICs version. It was manufacturing/distribution software included with the systems.

Gives me nightmares just thinking about it since we maintained that software on 80 column cards. Ugggg.

Jim Oberholtzer
Agile Technology Architects

On Feb 4, 2022, at 12:43 PM, Scott Klement <midrange-l@xxxxxxxxxxxxxxxx> wrote:


Hmm... I actually thought the references to RRNs *was* referring to the linked lists (or "chains"). Weren't the linked lists using RRNs to link the records?

Back in the day, I wrote some pretty smart utilities that figured out what was wrong with the linked lists and rebuilt them with correct values (based on our company's business rules) so when something went wrong, I'd just run my tool.

But, glad I don't have to do that stuff anymore.

On 2/4/2022 11:58 AM, Jim Oberholtzer wrote:
RRNs were easier to fix than the link-lists in MAPICS earlier versions.
Those were beast. Thank the good Lord for DB2, and the end of that
foolishness.....

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