RE: Does Qcmdexc return an error ??

CHKOBJ?

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of derek gonsalves
Sent: Wednesday, May 30, 2007 7:35 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: RE: Does Qcmdexc return an error ??


Sorry Joe,

I guess i typed it wrong.
My from file and to file are the same.
OVRDBF FILE(MPPMP100) TOFILE(DXGO/MPPMP100) The requirement of my
program is that, if file MPPMP100 does not exist in DXGO, then an error
message should be written to the printer file.Any suggestions for this??

From: "Joe Pluta" <joepluta@xxxxxxxxxxxxxxxxx>
Reply-To: RPG programming on the AS400 / iSeries
<rpg400-l@xxxxxxxxxxxx>
To: "'RPG programming on the AS400 / iSeries'" <rpg400-l@xxxxxxxxxxxx>
Subject: RE: Does Qcmdexc return an error ??
Date: Wed, 30 May 2007 07:29:55 -0500

From: derek gonsalves

Hi,

I have a Qcmdexc statement in a program.
OVRDBF FILE(ABC) TOFILE( )
Now for eg.
the TOFILE is DXGO/ABC. If MPPMP100 does not exist in DXGO, can i

capture

this error?(Or is there any other way of doing it)

Derek, the override command (OVRDBF) doesn't actually check for the

file.

It simply tells the operating system that any programs trying to open
file ABC should instead open MPPMP100 in DXGO. (I assume you meant
that your TOFILE is DXGO/MPPMP100.)

An error doesn't actually occur until a program tries to open file ABC.

At that point, the operating system sees the override and attempts to
open the TOFILE. Typically, this is when your RPG program first loads
(or if you have defined the USROPN keyword for the file, it happens
when you issue the OPEN opcode to the file).

The easiest way to handle this is probably with a USROPN file. You
could put an error indicator on your OPEN statement, or put a MONITOR
block around it.

Joe

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