Re: deleted records in file causing performance problem - HELP!!

["Booth Martin" <Booth@xxxxxxxxxxxx>]

I had one further thought on this problem.  If you are using SETLL, are you
also using READE?  If so, try changing to READ and  BLOCK(*YES) for greatly
improved performance.  READE is a real bad performer.
 
 
 
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Booth Martin   http://www.MartinVT.com
Booth@xxxxxxxxxxxx
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"Stone, Joel" <StoneJ@xxxxxxxxxxxxxxxx>
Sent by: midrange-l-bounces@xxxxxxxxxxxx
07/01/2003 08:57 PM
Please respond to Midrange Systems Technical Discussion
 
 
To: "'Midrange Systems Technical Discussion'" <midrange-l@xxxxxxxxxxxx>
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Subject: deleted records in file causing performance problem - HELP!!
 
 
 
I have a 30 million record file with 20% deleted records.
 
Some users are experiencing delays (up to 1 minute) in a critical RPG
interactive order entry program.
 
I can't seem to find an IBM utility to help diagnose the error.
 
I think the problem could be lots of deleted records in a file that the
program is performing a SETLL on to check for record existence.
 
I thought dspjob option 14 would reveal if the database is reading thru
1000's of deleted records, but apparently I cannot see that this is
occurring, and which file is causing the problem.
 
Is there any OS400 command to see my program reading thru thousands of
deleted record slots?
 
The file is set to reuse deleted records = *no.
 
 
PS only one or two activation groups exist, so I dont think it is building
1000's of those.
 
Also, other AS/400 programs running on the same PC on different
Client/access sessions are working fine.
 
Thanks!!