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Steve,

You're missing something somewhere.

As long as the file is being processed like so:
1) read and lock the record
2) Add 1 to the chknum
3) update the record
4) use the new check number 

Then there's no way for the check number to be duplicated.

Charles Wilt
--
iSeries Systems Administrator / Developer
Mitsubishi Electric Automotive America
ph: 513-573-4343
fax: 513-398-1121
  

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx 
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of 
steema@xxxxxxxxxxxxx
Sent: Friday, June 16, 2006 12:27 PM
To: RPG programming on the AS400 / iSeries
Subject: Re: Record Lock

Then in the RPG, the file is accessed, 1 is added to the 
check num. and
then the UPDAT is issues. (It is an older program).

I am trying to see where a dup could be done.

Or to put it another way, how would you design such a program 
in such a
way that a dup could NEVER happen?


HI I am looking at a situation that occassionaly occurs, 
that a check
number is allowed to be entered that is a dup.

The CL does an  ALCOBJ     OBJ((APPCKNO.LNDATA *FILE *EXCLRD)).

There are many file members, actually one for each company.

What about in the RPG is there something that could UNLOCK this file
momentarily and allow for the occurance?

Thanks,
Steve M.
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