Re: Question about service programs

Only way I could think to do this is with a Data Queue server.

Start up the job as a service waiting on a data queue. The batch jobs send a request to the data queue and the program performs the request and sends it back.

The driving issue would be speed. How many requests and how fast you need to the response.

The other thing to look at is should the batch jobs you are submitting really should be submitted? In other words, should the batch jobs be data queue server jobs that you send a request to perform an action.

Two examples of how I have used this.

1. Needed to print shipping documents. Previous programmer had created a job for each print. I created a data queue server and just sent a request to the server to print the documents. Was basically instantaneous

2. I need to print invoices so created a data queue server. Sent message to it from two different places and it generated the invoice.

The other possibility would be a socket server instead of a data queue server but more complex. Data Queues are simple and pretty fast.

Other than that, each time you start up a job, the service programs are going to get loaded and unloaded when the job ends.

-------------- Original message ----------------------
From: "Charles St-Laurent" <dringpiece@xxxxxxxxxxx>

Hi!

I wonder if what I want to do is possible on iSeries (V5R4).

I want to load many service programs in a kind of shared memory and then use
the loaded service programs from interactive or batch jobs, so the loaded
programs won't be loaded each time I start a new batch or interactive job
that wants to use them.

For example:

1) I load all my service programs once and initialize them correctly
2a) I submit a job and I want the submitted job to use the loaded service
programs that have been loaded previously and passing them parameters
2b) I launch an interactive job and I want this interactive job to use
service programs that have been loaded previously and passing them
parameters

I read about activation groups. Activation groups are effective within the
same job. But in my case, I also want to use persistent programs between
jobs (each batch job is a new job and I don't want my service programs to be
allocated/released each time). I want my batch jobs to execute previously
loaded service programs, each time with different parameter values.


Charles St-Laurent
Consultant Berco
Technologies
Industrielle Alliance, Assurance auto et habitation
Téléphone : 418 650-4600, poste 3216
Sans frais : 1 800 463-4382
Télécopieur : 418 650-4612
Sans frais : 1 877 650-4612
Courriel : charles.st-laurent@xxxxxxx <mailto:pcharles.st-laurent@xxxxxxx>
www.inalco.com/assurancegenerale


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