Encountering error while fetching data in QGIS from omnisci

We have created odbc connection successfully, however we are getting below error while fetching data

Crash ID: d55a6df5c63a82aaa951f3bd17d68f23a72f2c6e

Stack Trace

memcpy_repmovs memcpy.asm:114
CPLODBCStatement::Fetch :
SBNSearchFreeIds :
SBNSearchFreeIds :
QgsOgrProviderUtils::querySubLayerList :
QgsProjectStorage::QgsProjectStorage :
QgsProviderRegistry::querySublayers :
QgsProviderSublayerTask::run :
QgsTask::start :
QThreadPoolPrivate::reset :
QThread::start :
BaseThreadInitThunk :
RtlUserThreadStart :

QGIS Version: 3.22.3-Bia?owie?a
QGIS code revision: 1628765ec7
Compiled against Qt: 5.15.2
Running against Qt: 5.15.2
Compiled against GDAL: 3.4.1
Running against GDAL: 3.4.1

System Info
CPU Type: x86_64
Kernel Type: winnt
Kernel Version: 10.0.22000

Hi @Vidur_Mittal,

Just to confirm. Are you connecting from qgis to an enterprise edition of omniscidb using the odbc driver, and thats crashing the qgis?

Which table are you trying to read and which version of the database are you using?

Hi Candido,

Yes we are connecting with enterprise version at our client place, where as in our office we are using trail version for replication of use case. We have seen Qgis crashing in both the environment.

We are trying to import vector data from the table to represent on qgis and do some viewshed analysis using qgis, we were not successful in porting GDAL lib for using it with omnisci. However we are still facing some issue and still trying for the same parallel.


could you give at least the DDL of the omnisci/heavyai table structure you are getting data from?

you can get this information using

show create table table_name;

and then you could enable the trace of the Odbc driver, to help us better what’s happening in there.

To enable the trace, just click on the Loggin Options, and then change the log level to LOG_TRACE

After the crash just uploads the logs here.

Are you getting the crashes, when you read the data from the db to the Qgis?


Hi @Vidur_Mittal ,

It would also beDoing this nice if your client could directly open an issue to the support.
Doing this would speed up the entire process to resolve the issue.

Best regards,