AW: Binding Directory and qualified Service Program Entries

Hi guys,

Thanks for your answers.

@Charles

"When ILE program A is activated, the following takes place:
v The service programs are located by using an explicit library
name or by using the current library list. This option is controlled
by you at the time the programs and service programs are created."

You hit the nail on the head! That's what I did not know!
It seems the problem occurred because the binding library entry for the
service program was changed from the qualified specification using the
library list.
May be someone had to test another program and had to use the service
program form another library and forget to reset to the qualified
specification)
In either way I found the problem, but before I got a lot of trouble because
I recompiled this CGI program (Never change a running system!!! Too goofy to
compile a program etc... with CC to almost everybody).

If I could do so, I'd rewrite this CGI program (in which by the way the
library list will be set) by splitting it in at least 2 programs. In the
first I'd set the environment (Library List, Language to be used etc.) and
the second one (in a different named activation group) would do the work.
... but unfortunately I'm not allowed to change anything in these programs.

Mit freundlichen Grüßen / Best regards

Birgitta Hauser

"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"

-----Ursprüngliche Nachricht-----
Von: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im
Auftrag von Charles Wilt
Gesendet: Friday, 26. August 2011 19:56
An: RPG programming on the IBM i / System i
Betreff: Re: Binding Directory and qualified Service Program Entries

Birgitta,

It's called "early binding" for a reason. :) A link to the service
program is created at bind time, and resolved to a physical address
when the calling program is activated. From the ILE concepts:

"When ILE program A is activated, the following takes place:
v The service programs are located by using an explicit library
name or by using the current library list. This option is controlled
by you at the time the programs and service programs are created."

It seems to me that the CGI jobs weren't restarted when the CGI and/or
service program was recreated. Given that for performance reasons,
CGI programs are likely to run in a named activation, I can easily
imagine that the CGI program had the address of the original service
program and thus the MCH3401.

HTH,
Charles


On Fri, Aug 26, 2011 at 1:15 PM, Birgitta Hauser <Hauser@xxxxxxxxxxxxxxx>
wrote:

Hi,

someone can explain the following situation.

I had to compile a CGI Program that calls procedures from a service

program.

This service program is located in a different library.
The service program is also located in a binding directory that is used

for

compiling the CGI program (H-Specs)

Until now everything worked great.

Yesterday the program was compiled (without problems), but as soon as it

get

called from an web application I got an "Internal Serve Error".
After searching through all available logs, I found out an MCH3401

(Service

Program could not be found) was sent.
The program was recompiled last time around a week ago. A modification in

a

procedure in the service program was made after.
So I also recreated the service program, recreated my program ... and

still

got the same error.

The program could be called from a command line without problems, that

means

the service program was found.

After a long search I found out the service program within the binding
directory was not specified with Library *LIBL.
I changed it to the library in which the service program is located.
... recreated everything ... and everything worked great.

... Is the library information stored somewhere in the caller
(service-)program so it is found and activated directly??????

Mit freundlichen Grüßen / Best regards

Birgitta Hauser

"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"


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