Re: Most efficient AS400 physical file building ?

["srichter " <srichter@xxxxxxxxxxxxxxxxxx>]

Tim,

The latentcy you describe is quite large. Can you describe the ddm transfer, 
how frequently it runs, how is it initiated.  ( system B pulls from system A or 
A pushes to B )

However you do it, another option is *Add, *Dlt and *Upd triggers on the system 
A file. This gives your trigger pgm each chgd rcd in the file. Then write a 
socket pgm to send the data to system b or use a data queue.

Steve Richter




---------- Original Message ----------------------------------
From: "Tim Truax" <truax@telerama.com>
Date: Wed, 8 Aug 2001 23:07:04 -0400

>Yes.. the file on (system A) is constantly receiving data nearly around the 
>clock.
>  ----- Original Message ----- 
>  From: rob@dekko.com 
>  To: MIDRANGE-L@midrange.com 
>  Sent: Wednesday, August 08, 2001 6:01 PM
>  Subject: Re: Most efficient AS400 physical file building ?
>
>
>
>  Did you create the DDM file using SNA (the default), or TCP/IP?  We've
>  discovered that TCP was much faster for DDM copy files.  But we also have 2
>  lan cards and the TCP is using the gigabit ethernet.
>
>  Perhaps this might also be better served by a Mimix like solution.  This
>  would keep the files in sync on a transactional basis.  Or,  is the file on
>  systemA filled with the data all at once also?
>
>  Rob Berendt
>
>  ==================
>  A smart person learns from their mistakes,
>  but a wise person learns from OTHER peoples mistakes.
>
>
>                                                                               
>                                           
>                      "Tim Truax"                                              
>                                           
>                      <truax@telerama.com       To:     
><MIDRANGE-L@midrange.com>                                         
>                      >                         cc:                            
>                                           
>                      Sent by:                  Subject:     Most efficient 
>AS400 physical file building ?                
>                      owner-midrange-l@mi                                      
>                                           
>                      drange.com                                               
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>                                           
>                                                                               
>                                           
>                      08/08/2001 04:30 PM                                      
>                                           
>                      Please respond to                                        
>                                           
>                      MIDRANGE-L                                               
>                                           
>                                                                               
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>                                                                               
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>
>
>
>  Hi All,
>  There's a process that I am analyzing that involves large volumes of data
>  records arriving in one (system A) AS400 physical file. Then another
>  (system B) AS400 that is attached to this physical file on (system A) via a
>  DDM file which resides on (system B).  This process that runs on (system B)
>  then uses this DDM file and simply transfers the data that arrived in the
>  physical file on (system A).
>  Lately this process that transfers data between the two systems is lagging
>  behind to the tune of millions of records.  These lags are happening at
>  heavy system use times.
>
>  I am wondering if there is an (overlooked by me) CRTPF option that I could
>  add to the (system B) receiving physical file when it's built weekly that
>  would minimize this lag on receiving data records?  ..possibly ALLOCATING
>  THE STORAGE or something?
>
>  I have been directed to simply break the process in two (duplicate it) in
>  order that the 2 duplicated jobs could run concurrently on (system B), and
>  then the (system A) physical file would require 2 file members in order to
>  attach two different DDM files to.
>
>  FYI) These AS400's I am talking about are not farty little boxes they are
>  big AS400's.
>
>  Any suggestions or comments appreciated.
>  Tim Truax  :-)
>
>
>
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