• Subject: Re: Re[2]: AS400 and ODBC
  • From: "Joe Teff" <jteff19@xxxxxxx>
  • Date: Fri, 8 Oct 1999 10:06:51 -0500

>Also, for your ODBC request, are you using an "ORDER BY" statement,
>and if so, do you have an access path (Logical file) on the AS400 that
>corresponds to your Order By clause? Your problem sounds (to me) like
>the AS400 is having to build an access path to process your request.
>On small files, it's not too much of a problem, but as the file grows, the
>request will take longer to complete.

I have seen in the past where a new index is created which causes the
optimizer to quit looking at an existing path that it used to consider. I've
seen this happen in the past where a query is very quick and then all of
a sudden becomes very slow. The query advisor can tell you what the
optimizer is doing.

Joe Teff

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