Although we use KSAM extensively, all our KSAM files have the first
(primary) key as non-duplicates.   Could you change your key structure
so that all records were made unique by extending of the key -

e.g. C+-0001 for first C record, C+-0002 etc. 

-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On
Behalf Of Michael Caplin
Sent: 16 May 2006 21:24
To: [log in to unmask]
Subject: [HP3000-L] ksam rewrite problem

I have A ksam file with one key (duplicates allowed).
Ex:
Key     data-field
A       001
B       002
C       003 
C       004
D       005 
E       006

I start at key C, read a record and update the data field to X
I read another rec (the next C) and update the data field to Y
I then stop because I only wanted to update the 'C' recs.

At the end, the 2 C recs are as follows:
C       YYY 
C       YYY
The data portions of both are the same.
I've tried NM and CM KSAM.
The code is NM COBOL.
I've tried COBOL start/read/rewrite as well as
the intrinsics (CKSTART/CKREAD/CKREWRITE).
The manuals do indicate some odd things happening with record 
pointers but only when changing keys and I'm not doing that. 
Has anyone run across this ?

Mike

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