Hey,
I just stumbled into this interesting article:
https://oracle-base.com/articles/11g/adaptive-cursor-sharing-11gr1
It would seem Oracle could be made smarter in its plan choice, but one has
to tell it explicitly to be with a query hint?? :-)
I don't have time/mandate to work on this, but it could be useful to anyone
that does.
Cheers
Andrea
On Wed, Jul 27, 2016 at 11:41 AM, Rahkonen Jukka (MML) <
[email protected]> wrote:
> Hi,
>
> You should first test the view directly in Oracle with a bounding box and
> ANY_INTERACTION query. If such query is fast, change the logging level of
> your Geoserver into geotools developer, catch the SQL that Geoserver is
> generating and run queries directly from Oracle. You may find something
> interesting even the test is not totally reliable because Geoserver is
> using prepared statements and running the extracted SQL with SQL Plus is
> not exactly the same thing.
>
> One quick test would be to remove first separately and then both "where
> year=2016" and "where geom is not null". Oracle optimizer is sometimes
> making odd decisions.
>
> -Jukka Rahkonen-
>
> ________________________________________
> [email protected] wrote:
>
> Hi,
>
> no, my Select-Statement in the view is just sth. like 'select column abc
> as XY, select column bcd as XZ where year=2016 and geom is not null'.
> The rights don't seem to be a problem, since i have also tried to use the
> DBA-Account with no success.
> I'm using OJDBC7.jar as the driver (OJDBC6.jar was also tested).
>
> <quote author='Rahkonen Jukka (MML)'>
> Hi,
>
> If the view makes simple "SELECT geometry, other_stuff WHERE..." the
> spatial
> index works transparently for us. We do not run 2.9, though. Do you use
> some
> more advanced SQL in your views? Also giving GRANT SELECT ON VIEW for the
> geoserver user may not be enough but your user seems to have good rights
> because normat tables work fine.
>
> -Jukka Rahkonen-
> ________________________________________
> Lähettäjä: fmd.85 <[email protected]>
> Lähetetty: 27. heinäkuuta 2016 10:07
> Vastaanottaja: [email protected]
> Aihe: [Geoserver-users] Oracle view doesn't usw spatial index
>
> Hi,
>
> I'm using geoserver 2.9.0 with the oracle plugin and try to publish a layer
> of a view. I created the View in the database and in Geosever (add new
> layer
> -> create view) with the same results.
> The original table in the database has a spatial index and publishing the
> table directly works fine. If i use any kind of view, the spatial index of
> the table seems to be ignored. Even the computation of the Bounding Box
> takes ~30 minutes (with an index ~15 seconds).
>
> Does anyone else have the same problem? Any suggestions how to solve this
> problem? Creating materialized views for each table is no option for me
> since i'm running out of table space.
>
> Cheers,
> Max
>
>
>
> --
> View this message in context:
>
> http://osgeo-org.1560.x6.nabble.com/Oracle-view-doesn-t-usw-spatial-index-tp5278308.html
> Sent from the GeoServer - User mailing list archive at Nabble.com.
>
>
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> </quote>
> Quoted from:
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> http://osgeo-org.1560.x6.nabble.com/Oracle-view-doesn-t-use-spatial-index-tp5278308p5278311.html
>
>
> _____________________________________
> Sent from http://osgeo-org.1560.x6.nabble.com
>
>
>
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