[Qgis-user] [EXTERNAL] Re: Not query geometry types in layer browser?

[Bryan Hall]

Classification: DCL-Internal


Richard,

Yes, I understand how to do that, and this is not the issue.

The problem I have is that when I open the database connection, the layer/table list polls the database for each and every accessible item. That takes considerable time (I let it finish - the runtime was about an hour and a half).

I am asking if there is a configuration setting to disable this lookup (beyond just polling the mdsys.sdo_geom_metadata_table for the schema/table/column names) so that I can just open the browser, select a table, and go on without waiting for it to load metadata about all the other tables into the browser first.

Bryan

From: Qgis-user [mailto:qgis-user-bounces at lists.osgeo.org] On Behalf Of Richard McDonnell
Sent: Monday, July 02, 2018 08:59
To: qgis-user at lists.osgeo.org
Subject: [EXTERNAL] Re: [Qgis-user] Not query geometry types in layer browser?

Hi,
If I understand your question correctly.
I have little experience in Oracle DB's, but in PostgreSQL/PostGIS, you can create a Geometry Constraint within your table, which states what geometry is within the table, which speeds up QGIS in reading table lists, when loading them.
A quick search online resulted in

https://docs.oracle.com/database/121/SPATL/constraining-data-geometry-type.htm#SPATL584<https://urldefense.proofpoint.com/v2/url?u=https-3A__docs.oracle.com_database_121_SPATL_constraining-2Ddata-2Dgeometry-2Dtype.htm-23SPATL584&d=DwMDaQ&c=M7nMI6M-Uv3ihEfN-QJ3_sQdVexoO64eU4Ftr4lnVk0&r=-89XSUoV_kZKlHf89FQGuyqPyUjA53juyA-7r7GoZVA&m=kMsobCS1r-dtfVBLfC8RZmbtJAznC8lfOANCQ5nwhA8&s=S9z0VtIEHJoE-2R25LFRmKsUNxZRFR9i7AgsQo4TRmc&e=>

Hope this helps!
Regards,

Richard.

On 02/07/2018 14:34, Bryan Hall wrote:

Classification: DCL-Internal

Is there a way to configure QGIS to not query the geometry types from each registered shape with an Oracle database when opening the layer browser?

I ask because the database I am trying to load data from has 1486 registered tables, for which about 100 are external data (csv) tables (much slower to query), and a few dozen are huge collection geometry tables. QGIS currently takes "forever" (more than an hour - I gave up waiting) for the layer browser to query and load all the entries into the list. I really like QGIS in general, but this issue makes it unusable as it is currently.

Thanks in advance,

Bryan

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--
Richard McDonnell
GIS Specialist PgD GIS AssocSCSI
OPW FRM Data Management
52 Stephens Green, Dublin 2.
TEL: 01 6476543

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