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Re: OW Co-existence and SQL indices

TAdams

Member
Re: OW Co-existence and SQL indices

Gordon,
I agree, you also may want to look at the file descriptions to see if the indices are being shared. If not then you may want to delete them, however you should setup test scenarios to ensure that the opimizer will select the index from the 'world logical' and not have to build one on the fly.

As a follow on to this, has anyone out there needed to add custom indices? We added several to Sales Order detail and Sales order history after suffering severe response time issues with order entry. These were suggested by IBM support after running and analyzing the AS/400 Database Monitor tool.

Tim Adams

B7332, SP 11.2 AS/400 V4R4 SQL 7.0


>>Gordon,
>> Not sure if i am remembering correctly but i thought that logicals with the same keys shared the same access path by default >> on the AS400 and therefore would not cause any additional overhead. (IMHO) i would be hesitant to delete any logicals
>> created by One World.
>>dave
 

Seano

Member
Re: OW Co-existence and SQL indices

Gordon,

I'm not so sure that you should delete the OW indices. In Oracle, they are
sequentially numbered. In World, they were labelled alphabetically.

I'm sure they've followed the same naming conventions for co-existence?

To delete an index will not resolve your problem, instead, you'll have lost
an object (obviously how OW views ALL components).

It's is true in OS/400 terms that "the best path" will be used for file
access, but an index is an object and will be specifically referenced in the
UBE's.

Seano.
B7332, HP9000, Oracle.
Ex. World.





>From: TAdams <TAdams@burpee.com>
>Reply-To: jdeowdev@jdelist.com
>To: jdeowdevml@jdelist.com
>Subject: Re: OW Co-existence and SQL indices ~~0:5218
>Date: Wed, 7 Feb 2001 12:32:43 -0800 (PST)
>
>Gordon,
>I agree, you also may want to look at the file descriptions to see if the
>indices are being shared. If not then you may want to delete them, however
>you should setup test scenarios to ensure that the opimizer will select the
>index from the 'world logical' and not have to build one on the fly.
>
>As a follow on to this, has anyone out there needed to add custom indices?
>We added several to Sales Order detail and Sales order history after
>suffering severe response time issues with order entry. These were
>suggested by IBM support after running and analyzing the AS/400 Database
>Monitor tool.
>
>Tim Adams
>
>B7332, SP 11.2 AS/400 V4R4 SQL 7.0
>
>
> >>Gordon,
> >> Not sure if i am remembering correctly but i thought that logicals
>with the same keys shared the same access path by default >> on the AS400
>and therefore would not cause any additional overhead. (IMHO) i would be
>hesitant to delete any logicals
> >> created by One World.
> >>dave
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> !
>!
>
>
>
>
>
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