Re: Divide by zero and monitor group...

[Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx>]

There's a nice method for removing distracting messages - it involves 
sending a message before whatever process you want to clean up in, get a 
msg key from that one, then do another at the end - then loop through 
the possible message keys (4-byte integer, basically) - IBM has  
knowledge base article on it, I don't have the link right now.

Vendors should be using this kind of technique to clean up their logs - 
far too easy just to leave junk lying around!!

Vern

On 7/1/2015 6:54 PM, Rich Marion wrote:
> This is the main reason why I try to avoid MONITOR.  It confused other
> programmers where I work when they read through job logs.
>
> Rich
>
>
> -----Original Message-----
> From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Robert
> Rogerson
> Sent: Wednesday, July 01, 2015 1:12 PM
> To: RPG programming on the IBM i / System i
> Subject: Divide by zero and monitor group...
>
> Hi all,
>
> I was somewhat surprised to find that a divide by zero error inside a
> monitor group still wrote/added an error/message to the joblog. The message
> I'm referring to is
> MCH1211 Escape 40 Message . . . . :   Attempt made to divide by zero for
> fixed point operation.
>
> I was pointed to this error as the reason for the program abending, but when
> I checked (the specific line specified in the message) in the program it was
> within a monitor group, so it was already being handled.
> In the end the issue was elsewhere in the program.
>
> With that being said, my question is, doesn't writing to the joblog take up
> processing time and isn't this message misleading when the program is
> already handling the error within a monitor group?
> I know that checking the divisor before doing the divide operation would
> avoid this issue, but I thought this was one of the purposes of the monitor
> group.
>
> Thanks,
>
> Rob
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