RE: Reading an RPG dump

Pete, before you give up, see the joblog (there ought to be one, where
someone replied with the "D" to generate the dump). Just before the
reply, you'll see the "Receiver value too small to hold result." F1 on
that message, then F9 to display the message details. Should show the

From module, From procedure (if any), and From statement. No guarantee

here, but that statement might correspond to the source line (which is
why we always put the "H option(*srcstmt)" in any program we touch
here). If that source statement has anything to do with putting data
into a variable or datastructure, use the dump to find the current
values and data-types of what is going into that, and see if the target
is too small, or if (as I discovered in a posted issue earlier this
week) there might be an intermediate result that could be insufficient.

I wish you luck.

-Michael

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Pete Helgren
Sent: Wednesday, September 29, 2010 1:36 PM
To: RPG programming on the IBM i / System i
Subject: Re: Reading an RPG dump

Ok. Great suggestions all. First I am reluctant to run the program
because I do not know enough about what it will impact since I am not
familiar with the program and function. Yes, I could run it in debugt
but since I am a consultant I'd hate to make this my last day by running

something that causes downstream problems. I guess I could try to
compile. The only thing that may come back to haunt me is that I don't
know if there is a "tool" I need to use to compile the source in BPCS.

I was hoping that I could figure out the issue, which I am certain is a
data issue (although the program should anticipate the possible data
issue) without running the program but I'll see if I can compile it and
get it to run in debug. No easy way out I guess.

Thanks for all the suggestions.

Pete Helgren
Value Added Software, Inc
www.valadd.com
www.opensource4i.com


On 9/29/2010 10:05 AM, Pete Helgren wrote:

Amazingly, in my 20+ years of RPG programming I have never had to

dump

an RPG program that was halted with an error. The software I work

with

is so familiar to me that IF I get an RPG error, I usually know where

to

look to fix it without much research.

However, I have taken an interim consulting gig with a company that

runs

BPCS (for reasons other than running their BPCS installation). It is

an

old version (at least 10 years old) and I have never had any BPCS
experience so when an error occurred, I had to start from scratch in
figuring out what went wrong.

The statement number in the RPG program doesn't resolve to a valid
statement number in the source referenced by the program (It has been
converted to ILE RPG). So, when the error occurred, I took the option
to dump the RPG program to figure out what went wrong.

The error is: The target for a numeric operation is too small to hold
the result. So I know what the problem is. Unfortunately the program
isn't kind enough to says: The target (MYFIELD) for a numeric

operation

is too small to hold the result. So I was hoping to find out what
*field* the program was complaining about.

So (this is NOT a BPCS question): How do I determine from the RPG

dump

which field is too small? Since I cannot reconcile the statement

number

to the source, I was hoping the dump would illuminate the problem.
After looking at the dump, there is so much information I can't sort

out

where to begin looking.

Suggestions?