Re: 500 Error when trying to call a program with a service program

Do both programs call a function in the same service program?

Do any programs you call manipulate the library list? Maybe leaving a
library that contains the service program in the library list for one job,
while another job hasn't called a program that adds this library?

Remember that calls to the HTTP server are not always to the same job (they
are not persistent). If you have 3 requests coming in it will be split up
(most of the time) to 3 different jobs.

So, lets say you run a CGI program from your browser. It adds library
MYSRVPGM to the library list but does not remove it when it ends.

Now you call a CGI program (or a static page) that includes 2 AJAX calls.
Each call will most likely be run in a different job. The first call may
get the first job (that we used earlier) and have no issues since MYSRVPGM
is in the library list.

The second call will get a different (or even newly created in some cases)
job without MYSRVPGM in the library list and crash with that error.

The idea is, don't think of web jobs as interactive green screen type
jobs. They are "take requests as they come" and spread them out to
available jobs. And, as before, sometimes new jobs are started depending
on your server settings.

Brad
www.bvstools.com

On Thu, Mar 10, 2016 at 1:39 PM, Charles Wilt <charles.wilt@xxxxxxxxx>
wrote:

By default, the resolution happens when the program is
loaded(activated)...unless you have *DEFER specified for the service
program on the BNDSRVPGM() parm of CRTPGM. Once activated, the program &
services programs remain active till the activation group is ended or
reclaimed.

Do both Ajax calls call the same program?

Do both Ajax calls make use of procedures from the ITMCHNGSRV *SRVPGM?

Charles

On Thu, Mar 10, 2016 at 2:08 PM, Vicki Wilson <victwyh@xxxxxxxxx> wrote:

Charles,
I agree it's a library list issue. But I need to work my way back a
little to determine why the library list changed for the first ajax call
but not for the second???
I don't know the Apache config/QHTTPSVR jobs well enough to understand

why

the job gets invoked correctly on the first call but not the second.

And I

don't know where to look. Also - I realize that maybe I'm assuming that

the

binding reference is resolved every time the program is called. I think
this is correct.
Vicki Wilson








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