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  • Subject: RE: Help!!!!! Access path size
  • From: Pete Hall <pbhall@xxxxxxxxxx>
  • Date: Fri, 04 Aug 2000 20:47:39 -0500

At 04:20 08/03/2000 , Brendan Bispham wrote:
>You might want to check the archives, but I believe the concesus was to
>remove the logical file members, increase the PF, and then ADDLFM the
>members again.
>Shouldnt they be changed to *MAX1TB as well?
>I think speed can be improved with SHARE(*YES).

The share attribute is not what's needed here. You're thinking of shared 
access path. SHARE(*YES) gives you (by default) a shared cursor, which can 
cause major problems if existing apps are using the files, and they were 
not designed to use a shared cursor. Access path sharing can be achieved by 
creating the logicals with the largest number of key fields first (no 
includes or omits). Other files that might use just the first part of the 
key will then share the access path automatically. There are also some 
caveats about *MAX1TB. It is generally true that the 1TB indexes perform 
better, but there are some conditions where they do not. Hopefully someone 
who is more familiar with that issue can comment on the specifics.
Pete Hall
pbhall@execpc.com
http://www.execpc.com/~pbhall
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