RE: Improve SQLRPGLE performance

["Haas, Matt" <Matt.Haas@xxxxxxxxxxx>]

If you have an access path that matches your selection and sort criteria, try 
compiling this with option ALWCPYDTA(*YES). If you don't have an access path, 
the one recommended by the query optimizer is usually a good place to start.

Matt

-----Original Message-----
From: Peter Colpaert [mailto:Peter.Colpaert@xxxxxxxxxxxx]
Sent: Wednesday, August 04, 2004 4:05 AM
To: RPG400-L@xxxxxxxxxxxx
Subject: Improve SQLRPGLE performance


Hi group,

I made an inquiry SQLRPGLE program where I have to do a count of records 
in a file, whereby one of the group-by fields is the date portion of a 
timestamp field.  The data is presented in a panelgroup application.

The performance, when running in production over a 600.000-record file, is 
very VERY bad.

When I debug the program, it says that arrival sequence is used to build 
the access path.

Is there a way to improve the performance, such as by creating an index 
that has only the date portion of the timestamp field?

Thanks in advance.

Peter Colpaert
iSeries Application Developer

Honda Europe NV
Langerbruggestraat 104
B-9000 GENT
Belgium
Peter.Colpaert@xxxxxxxxxxxx
Tel: +32 9 2501 334
Fax: +32 9 2501 231
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