RE: re Rebuilding Indexes in Oracle Apps -- was RE: RE: Separate

The 'better performance' part is what I would like to see some metrics on.

How much better? Is it worth the trouble?

If your indexes continually build up to the same size, what is being gained by saving some space for a period of time?

Thanks,

Jared

On Wed, 2003-10-15 at 18:04, M Rafiq wrote:
> Jared,
>
> Those tables are transit type of tables and depending on your volume of
> data, there are lot of deletes and inserts all the time resuling index
> fragmentation(holes due to deletes) and space usage.
>
> The rebuilding not only release the space but also reduces the index
> fragmentation. If you don't have table truncation option for such tables
> then it is much better to rebuid indexes on such tables at regular interval
> to release space and for better performance.
>
> As regard quantification, you many release sufficient amount of space if
> your usage is higher. Here it was 7.3.4 database so no LMT involved.
>
> Regards
> Rafiq
>
>
>
>
>
>
>
> Reply-To: ORACLE-L_at_fatcity.com
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> Date: Wed, 15 Oct 2003 13:19:24 -0800
>
> Please explain why these indexes must be built.
>
> What benefits do you see from it?
>
> Are they quantifiable?
>
> Jared
>
>
>
>
>
> "M Rafiq" <rafiq9857_at_hotmail.com>
> Sent by: ml-errors_at_fatcity.com
> 10/14/2003 03:49 PM
> Please respond to ORACLE-L
>
>
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> cc:
> Subject: RE: re Rebuilding Indexes in Oracle Apps -- was RE:
> RE: Separate
>
>
> John
> What about gl_interface table indexes? I think indexes on all *interface(
> tables must be rebuild on a regular interval...I was building indexes on
> gl_interfaces and fnd_request* tables on monthly basis.
>
> Regards
> Rafiq
>
>
>
> Reply-To: ORACLE-L_at_fatcity.com
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> Date: Tue, 14 Oct 2003 13:34:24 -0800
>
> Hemant,
>
> This applies on 11i only. I would rebuild all indexes supporting the
> WF_ITEM_ACTIVITY_STATUSES and WF_ATTRIBUTE_VALUES tables. I have been
> working on some AOL table(space) problems in the background and noticed
> that
> in 11i by default, we are not be purging _all_ the WF data that we should
> be
> purging. I believe the current Purge routine purges activity rows whose
> persistence has expired and are marked 'TEMPORARY' and ignores those that
> are COMPLETE (see below). My contention is that it should be deleting old
> rows that are COMPLETEd... (Fyi, this is 12+ million rows...) Notes
> 141853.1, 144806.1, 132254.1, 148705.1, 148678.1 may help.
>
> You could check this using the following SQLs
>
> select activity_status, count(*)
> from applsys.wf_item_activity_statuses
> group by activity_status;
>
> select item_type,activity_status,count(*)
> from
> applsys.wf_item_activity_statuses where activity_status='COMPLETE'
> group by item_type,activity_status;
>
> Once the 'correct' purge is complete, the 'holey' indexes will need to be
> rebuilt and the WF_ tables copied/truncated/recopied to shrink the HWM to
> reasonable levels.
>
> Let me know what your install shows up.
> John Kanagaraj
> DB Soft Inc
> Phone: 408-970-7002 (W)
>
> Grace - Getting something we do NOT deserve
> Mercy - NOT getting something we DO deserve
> Click on 'http://www.needhim.org' for Grace and Mercy that is freely
> available!
>
> ** The opinions and facts contained in this message are entirely mine and
> do
> not reflect those of my employer or customers **
>
> -----Original Message-----
> Sent: Tuesday, October 14, 2003 8:39 AM
> To: Multiple recipients of list ORACLE-L
>
>
>
> John,
>
> I rebuild the FND_CONCURRENT_REQUESTS indexes every four months [and the
> table itself, occassionally].
> This Saturday I will also be rebuilding some ALR indexes.
> Which WorkFlow Indexes do you rebuild ?
>
> Hemant
>
> At 11:44 AM 13-10-03 -0800, you wrote:
>
> --
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> Author: John Kanagaraj
> INET: john.kanagaraj_at_hds.com
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> Author: M Rafiq
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Author: Jared Still
  INET: jkstill_at_cybcon.com

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