× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.


  1.  Home
  2. MIDRANGE-L
  3. March 2023

Re: Do any of you have a policy on rebuilding indexes?

I agree with Mark. Create SQL Indexes. That will definitely give you better
performance.

On Thu, Mar 30, 2023, 8:53 AM Jim Oberholtzer <midrangel@xxxxxxxxxxxxxxxxx>
wrote:

I don't think it matters as much as it used to anymore with the updates to
the query engine.
It would however save some space by causing the system to reuse access
paths in the way that Mark pointed out.

Then again, is it worth the effort? Doubtful. The application performance
issues are likely due to other factors, and the only way to really ferret
those out is to use the performance tools in Navigator.

--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On Thu, Mar 30, 2023 at 10:48 AM Rob Berendt <robertowenberendt@xxxxxxxxx>
wrote:

This kind of stuff was what I was stressing that the order of creating
the
keys might matter.

On Thu, Mar 30, 2023 at 11:26 AM Mark Waterbury <
mark.s.waterbury@xxxxxxxxxxxxx> wrote:

See the following articles / presentations for details about sharing
access paths between DDS LFs and SQL INDEXes.




https://www.ibm.com/support/pages/system/files/inline-files/Indexing%20and%20Statistics_1.pdf

and
https://public.dhe.ibm.com/partnerworld/pub/pdf/courses/29a2.pdf

If you create SQL INDEXes first, when you create LFs over the same PFs
that have SQL INDEXes, they can "share" access paths, and you get the
benefit of the larger page size.

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list
To post a message email: MIDRANGE-L@xxxxxxxxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxxxxxxxx
Before posting, please take a moment to review the archives
at https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxxxxxxxxxx for any subscription
related
questions.


--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list
To post a message email: MIDRANGE-L@xxxxxxxxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxxxxxxxx
Before posting, please take a moment to review the archives
at https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxxxxxxxxxx for any subscription related
questions.


--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxxxxxxxx
Before posting, please take a moment to review the archives
at https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxxxxxxxxxx for any subscription related
questions.



As an Amazon Associate we earn from qualifying purchases.

This thread ...
Replies:
Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.