Bryan,
I was having a similar issue before, it was due in my case to QGIS
looking through the whole table to find what kinds of Geometry were in
the table. In my case the addition of Geometry Constraints helped speed
things greatly.
The only other way I know, which is quicker for loading Tables (if you
have already added them as sources) would be to:
In QGIS 2.1X use the DB Manager, and drag and drop the Layers you want
into QGIS, its considerably quicker, also good for adding views!
In QGIS 3.X, you can use the Data Source Manager to add the Layers, Dont
use the icons on the Left (thats the same as the method you are having
issues with), drill down through the Browser instead, you can add them
from there, I find it much quicker. Again its a good method for adding
Views.
Hope it helps, Regards,
Richard.
On 02/07/2018 17:03, Bryan Hall wrote:
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-boun...@lists.osgeo.org] *On Behalf
Of *Richard McDonnell
*Sent:* Monday, July 02, 2018 08:59
*To:* qgis-user@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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