[Qgis-user] Not able to connect to Oracle via ODBC

[Tudorache, Marian]

Hi Stefan,

Thank you for your answer.
Initially the issue was somewhere between Linux Red Hat 7 and QGIS because the same error was when I tried to connect to Oracle using isql.

The reason fro this issue was a known Red hat issue.
Let me explain:
Oracle ODBC driver is libsqora.so.11.1. This file exists in my system under /usr/lib/oracle/11.2/client64/lib/.
I have run on a terminal ldd command like bellow.
ldd /usr/lib/oracle/11.2/client64/lib/libsqora.so.11.1

In one of the result line was: libodbcinst.so.1 => not found.

So I have created a symbolic link from /usr/lib64/libodbcinst.so.1 to /usr/lib64/libodbcinst.so.2.

This fix made my Oracle client workable from isql and sqlplus.

But QGIS still not able to add Oracle layer because the icon does not exists in QGIS Browser and ODBC still has the error:
Connection failed - Check settings and try again

Extended error information:
Unable to initialize ODBC connection to DSN for USER/PASS at CAAR,
[unixODBC][Driver Manager] Datasource name not found, and no default driver specified

So right now someone who knows the QGIS code should see why Oracle connectivity icon does not exist in QGIS 2.8.2 Linux Red Hat and why ODBC does not work when it tries to connect to Oracle.

Thanks,
Marian

From: Blumentrath, Stefan [mailto:Stefan.Blumentrath at nina.no]
Sent: June-26-15 3:20 AM
To: Tudorache, Marian; qgis-user at lists.osgeo.org; ottawa_users at lists.osgeo.org
Subject: RE: Not able to connect to Oracle via ODBC

I had a similar issue with unixODBC and MS SQL.
If I am not mistaken, the «host" parameter overrides the «Provider/DSN» parameter. It does so for MS SQL, at least.
For MS SQL it helped to leave the "host" parameter empty and only use Provider/DSN.

However, there does not seem to be a "Provider/DSN" parameter for neither "Add Oracle Spatial Layer" nor ODBC, ...

A Bug?

Cheers
Stefan

From: qgis-user-bounces at lists.osgeo.org<mailto:qgis-user-bounces at lists.osgeo.org> [mailto:qgis-user-bounces at lists.osgeo.org] On Behalf Of Tudorache, Marian
Sent: 25. juni 2015 23:04
To: qgis-user at lists.osgeo.org<mailto:qgis-user at lists.osgeo.org>; ottawa_users at lists.osgeo.org<mailto:ottawa_users at lists.osgeo.org>
Subject: [Qgis-user] Not able to connect to Oracle via ODBC

Hello,

What I am trying to do: Add a vector layer from an remote Oracle database.

Description:
I tried to add a vector layer using ODBC connectivity to an Oracle database on QGIS 2.8.2.
Add vector Layer
Choose Database
Type ODBC
Click New
I filled the form as:
Type ODBC
Name: myODBCConnection
Host: ssfdata
Database: CAAR
Port: 1521
Username: USER
Password: PASS

When I clicked Test Connection I got:
Connection failed - Check settings and try again

Extended error information:
Unable to initialize ODBC connection to DSN for USER/PASS at CAAR,
[unixODBC][Driver Manager] Datasource name not found, and no default driver specified

I opened a terminal window and I typed:
Isql -v caarODBC
I was able to connect to my database
+------------------------+
| Connected            |
|                              |
| sql -statement     |
| help [tablename] |
| quit                       |
+------------------------+
SQL>

So the unixODBC driver works for the database but QGIS is not able to access via ODBC.

Is any special settings related qgis to make ODBC working?

Thanks,
marian

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