can not start transaction ORACLE OCI, while having QSqlQuery open in QSqlQueryModel

If you have a model view with QSqlQueryModel and the query remains open (which is normal) you are not able to start a transaction to do something else.
The databse will complain with ORA-01453: SET TRANSACTION must be first statement of transaction Unable to begin transaction.

I believe that the bug for that is based in qsql_oci.cpp line 1967

< // mode = OCI_DEFAULT;
> mode = d->transaction ? OCI_DEFAULT : OCI_COMMIT_ON_SUCCESS;

In my application it works fine.