RE: Buffering and single level store (was RE: chain problem)

Charles,

I don't think single level store has much to do with IO blocking....  Data
management handles the retrieval of data, and can decide to block the data
as it deems necessary (or as we explicitly tell it).  Our RPG programs
simply ask OS400 for data.  If blocking is enabled, then data management
simply retrieves multiple records in succession and loads that data into the
buffer.  Subsequent sequential reads or writes are simply applied against
the copies of data in the buffers, and may or may not actually fetch or
write to DASD.  

Eric DeLong
Sally Beauty Company
MIS-Project Manager (BSG)
940-898-7863 or ext. 1863



-----Original Message-----
From: CWilt@xxxxxxxxxxxx [mailto:CWilt@xxxxxxxxxxxx]
Sent: Friday, August 13, 2004 9:53 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: Buffering and single level store (was RE: chain problem)


I read the same article.

One of the discussion posts about the article asks an interesting question,
"What happened to single-level store?"

>From my, admittingly simple, understanding of single level store the
buffering problem should really exist.  Yet obviously it does.  Does anyone
know why?

Thanks,
Charles


> -----Original Message-----
> From: Haas, Matt [mailto:Matt.Haas@xxxxxxxxxxx]
> Sent: Friday, August 13, 2004 9:36 AM
> To: RPG programming on the AS400 / iSeries
> Subject: RE: chain problem
> 
> 
> A newsletter I get from MC Press had an article on this 
> subject today. The link I have for the article is 
> http://www.mcpressonline.com/mc/1@xxxxxxxxxxxxxxxx@.6aecd92d. 
> You'll need to register for the site to access it.
> 
> Matt
> 
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