Eric,
Eric Wolf wrote:
I'm running Oracle 11g on the same machine as the Python script.
I did test cx_Oracle and found that it wasn't working. I was using the
Unicode cx_Oracle 5.0.3. Switching to the non-Unicode cx_Oracle got it
working. But OGR is still not connecting.
Does OGR rely on cx_Oracle?
No it doesn't but I was a good to clue.
I think I'll try regressing to an older version of GDAL and see if it works.
I running GDAL/OGR/Python/OCI on OpenSUSE and it works just fine. I am going to
test on Windows.
Regards,
Ivan
-Eric
-=--=---=----=----=---=--=-=--=---=----=---=--=-=-
Eric B. Wolf New! 720-334-7734
USGS Geographer
Center of Excellence in GIScience
PhD Student
CU-Boulder - Geography
GPG Public Key: http://www.h4h.net/ebwolf.public.key.txt
On Sun, Feb 14, 2010 at 12:45 PM, Abhay <abhay.me...@gmail.com
<mailto:abhay.me...@gmail.com>> wrote:
On Fri, Feb 12, 2010 at 11:32 PM, Eric Wolf <ebw...@gmail.com
<mailto:ebw...@gmail.com>> wrote:
Thanks for the replies. Sorry I didn't give more details on the
environment.
I am running on Windows, at the command line, both ogr2ogr and
the python script.
Created an environment variable for ORACLE_SID=ORCL
I double-checked my OCI string by using sqlplus to connect:
sqlplus scott/ti...@orcl
This works fine. I changed the script to use that in the call to
ogr.Open(). No luck.
I imported gdal and sprinkled print 'Error:',
gdal.GetLastErrorMsg() in my exception handlers. I got:
Unable to open Oracle connection None
Error:
Still no dice. If I take the same script and modify the
GetDriverByName and Open to use a shapefile, it works perfectly.
-Eric
-=--=---=----=----=---=--=-=--=---=----=---=--=-=-
Eric B. Wolf New! 720-334-7734
USGS Geographer
Center of Excellence in GIScience
PhD Student
CU-Boulder - Geography
GPG Public Key: http://www.h4h.net/ebwolf.public.key.txt
On Fri, Feb 12, 2010 at 6:56 AM, Abhay <abhay.me...@gmail.com
<mailto:abhay.me...@gmail.com>> wrote:
On Fri, Feb 12, 2010 at 2:48 PM, Eric Wolf <ebw...@gmail.com
<mailto:ebw...@gmail.com>> wrote:
I'm using GDAL/OGR 1.6.1 with ActivePython 2.6.4-10 and
cx_Oracle-5.0.3-11g. I am trying to connect to an Oracle
11g instance.
This works:
ogr2ogr -f "KML" emp.kml OCI:scott/tiger "EMP"
What am I doing wrong. This fails, ds is None:
from osgeo import ogr
try:
d = ogr.GetDriverByName('OCI')
except:
print "Unable to GetDriverByName"
quit()
ds = None
try:
ds = ogr.Open('OCI:scott/tiger')
except:
print "Unable to open OCI connection"
quit()
if ds is None:
print "Unable to open Oracle connection", ds
quit()
lyr = ds.GetLayerByName('EMP')
number = lyr.GetFeatureCount()
print "Features: " + str(number)
-=--=---=----=----=---=--=-=--=---=----=---=--=-=-
Eric B. Wolf New! 720-334-7734
USGS Geographer
Center of Excellence in GIScience
PhD Student
CU-Boulder - Geography
GPG Public Key: http://www.h4h.net/ebwolf.public.key.txt
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Hi Eric,
Form your mail it not clear what is cause of the problem.
There 2 scenario here
1) you are on a remote machine form where your trying to
connect oracle server machine:
a) Have you installed any Oracle Client in your system.
Considering that you are using the complete oracle client
installation you can use the following :
OCI:scott/tiger@<Tnsname entry for eg. ORCL>
b) if you are trying out with Instant client for 11g you
should try either of the following
OCI:scott/tiger@//localhost/<your ORACLE SERVICE IDENTIFIER
for eg ORCL>.
2) you are on the oracle server machine where
you must set the oracle SID. like the following
on windows
SET ORACLE_SID=ORCL
or
on *nix
export ORACLE_SID=ORCL
then try your implementation or use methods stated in 1)
Rgds.
Abhay.
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Hi Eric,
What I still did not get is whether your running Oracle Server 11g
on the same machine on which your developing.
Also have you tried connecting the same using "cx_Oracle.Connection"
whether this connect string is working.
Are you using gdal-1.6.1-py2.6-win32.egg install with Python or
build your on using SWIG python implementation.
Interestingly, what I found is that in gdal-1.6.1-py2.5-win32.egg
which install using easy_install seem not work with OCI driver as
way it should. But connection string using cx_Oracle is working. So
it seem gdal-1.6.1-py*-win32.egg is broken for OCI plugin or
probably it must be some setup I must have overlooked will setup, if
someone else is working with same setup could help on this or Howard
could comment on this.
I have build my own egg using latest repo of gdal build and is
working. If you need I can share the same egg file (for python 2.6)
or wait for Howard to compile for the latest build of GDAL-1.7 for
python officially as you would need gdalwin32-17 for this along with
OCI build plugin.
Rgds.
Abhay.
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