Re: NET.DATA demo from COMMON, Round 2

[Rob Berendt <rob@xxxxxxxxx>]

Thank you.  You're information makes sense to me.  My 
boss is pretty good on performance tuning.  Your clues 
should be of assistance.  Your ideas about tuning SQL 
make sense also.  Have tested the debug and it is a good 
idea.  Still remember John Sears sessions from years ago 
at COMMON on logical files, (or do we call them views or 
indexes now?).  John retitles his sessions to appeal to 
the latest buzz words but they usually boil down to the
same basic message, and are still valid.





joberhol@compures.com on 03/21/2000 03:28:19 PM
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Subject:        Re: NET.DATA demo from COMMON, Round 2

<*snip>
Boss has heard that net.data can have a performance impact.
<*endsnip>

The Net.Data macro will only have a performance impact if the SQL is
written poorly.  You also have to make sure the memory pool where the
Websphere server is running has sufficient activity level and memory to
support the activity levels.. It will use as many as 60 threads to start up
and periodically use that many depending on what else is going on.  In my
experience that is where the performance hit is, bad tuning and bad SQL.
The operating system can make up for bad code, not even OS/400.

Test the SQL statements with debug turned on and check the job logs for
messages to tune the SQL.  See other threads in the archive for tips on
that topic.

Jim Oberholtzer


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