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Sorry if I've come in late to this conversation.

Remember that an activation group is a job resource. It is not shared among jobs.

These days and times, I'd set this up as a web service. The java container (Websphere or Tomcat) will manage the threads for you, creating a new thread for each request until it can reuse threads that have completed and are returned to the pool. Use the JT400 toolkit to call the RPG program. Organize this so you have only one AS400 connection (one AS400 job), or only a few of them, rather than creating and ending one for each new request. Much simpler than data queues.


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Charles St-Laurent
Sent: Wednesday, August 13, 2008 3:04 PM
To: midrange-l@xxxxxxxxxxxx
Subject: RE: Subsystems and ODP - answer to Wilt, Charles

Hi!

I looked at the data performance analysis tool that is provided in iSeries Navigator when I launched the process. The big performance loss was when I have to open the database files for the first time. So I supposed that if I can keep these files open between calls, the entire process would be shorter than now. That's why the idea to have a server job with a specific activation group and many children threads sharing the same activation group appeared to me to be the best way to solve our performance loss. Once opened in the activation group, the ODPs will stay opened and will be re-used by subsequent requests.

I tested shared ODP locally on my user by calling the process interactively without reclaiming the activation group ressources between calls. The first time I launched the process, I got the result after 50 seconds, probably because it had to open files for the first time. Then, all my subsequent calls took an average of 5 - 10 seconds for exactly the same request.


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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