RE: Value in field does not match database????

This is weird...

Program was last compiled Aug 31 2015 (4 years ago)... has been used 445 days.

100% certain the program has no errors. File is defined as input only, accessed via keyed logical view (this field is the 3rd part of the key).

Here is the weird part... I used UPDDTA to "look" at the record. It looked fine. Not sure this had anything bearing.

So instead of a user running the program (where the error occurred 3 times), I ran the program after setting an SEP and a breakpoint (it runs in QBATCH).

PROBLEM IS GONE!!

ODSEQ# = 8. No program message or error.

Friday the 13th is NEXT week, right?



-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxxxxxxxx] On Behalf Of Jon Paris
Sent: Thursday, September 05, 2019 4:29 PM
To: RPG programming on IBM i <rpg400-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: Value in field does not match database????

Can't think of anything except either:

a) A programming error which has modified the value by mistake

b) Corruption probably due to mis-matched parameters

Has it been recently re-compiled for some reason? In the case of scenario b some causes of corruption can cause no apparent problems for years and then due to internal compiler changes a simple recompile causes it to crash and burn because the corruption now hits something that matters.

On Sep 5, 2019, at 4:08 PM, Greg Wilburn <gwilburn@xxxxxxxxxxxxxxxxxxxxxxx> wrote:

A program that is well over 4 years old failed today... When I view the suspect field value in debug (or do a PGM DUMP and view in spool file), I see a DIFFERENT value than what is actually in the database file.

How could this be??

The field in question ODSEQ# is packed (5,0) - it is the line sequence number for our Order Entry Detail file.

In debug (and in the dump) the value in this field is 03409.
In the database file, the value is 8.

I verified the database record using SQL select by

1. Keyed values, and

2. Relative Record Number (got this from WRKJOB)

The field inside the program is not manipulated or referenced anywhere in the code, other than the failing line:
EVAL %SUBST(PSQ:ODSEQ#:1) = 'X'

This is from the dump:
ODSEQ# PACKED(5,0) 03409. '03409F'X

This is from SQL select:
COMPANY ORDER WWSEQ5
014 10001831 8

Any ideas???

Greg
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