RE: Data Queues

[Chris Bipes <rpg@xxxxxxxxxxxxxxx>]

I would not have the trigger goto the ddm data queue.  If your
communications is ever down, your trigger will fail.  Use a local data queue
and a server program to read the local and send to remote.  This way if the
two as400s are not talking, the transactions remain queued until you can
re-establish communications.  Your applications will not crash because the
trigger will not crash.  We have the trigger write to a file and have a
server read the file, send to remote, delete the record from the file after
confirming the remote received the transaction.  Data queues are fast with
little overhead but have their limits.  Long term storage, more than a few
minutes), and power failures are two of their weaknesses.



Christopher K. Bipes     mailto:ChrisB@Cross-Check.com
Sr. Programmer/Analyst   mailto:Chris_Bipes@Yahoo.com
CrossCheck, Inc.         http://www.cross-check.com
6119 State Farm Drive    Phone: 707 586-0551 x 1102
Rohnert Park CA  94928 Fax: 707 586-1884

If consistency is the hobgoblin of little minds, only geniuses work here.
Karen Herbelin - Readers Digest 3/2000


-----Original Message-----
From: Jim Langston [mailto:jlangston@conexfreight.com]
Sent: Monday, June 12, 2000 8:35 AM
To: RPG400-L@midrange.com
Subject: Re: Data Queues


Thank you, Booth and Jodi and other people who responded.

This worked exactly as advertised, and is implemented.  Was quite
an interesting project, and even though I am still working on some of
the finer points of my data, the transfer is going quite well.

From a Trigger triggered on *Insert to an external data queue to a
remote system.  Ain't the AS/400 grand?

Regards,

Jim Langston

boothm@earth.Goddard.edu wrote:

> Here's some code I use that works:
>
> 0019.00       * DTAQ identification variables
> 0020.00      D DtaQ            s             10    Inz('xx4030DQ')
> 0021.00      D DtaQLib         s             10    Inz('*LIBL')
> 0022.00      D DtaQLen         s              5  0 Inz(1024)
> 0023.00      D DtaQData        S           1024
> 0024.00
> 0026.00      D DtaQDataDS      ds
> 0027.00      D  xxCONO
>
> 0042.00      C                   Movel     DtaQDataDS    DtaQData
> 0043.00      C                   call      'QSNDDTAQ'
> 0044.00      C                   parm                    DtaQ
> 0045.00      C                   parm                    DtaQLib
> 0046.00      C                   parm                    DtaQLen
> 0047.00      C                   parm                    DtaQData
>
> Good luck with it.

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