How to select field types extended from Oracle Object type?

Hi

I want to select tables from Oracle 10gR2 database where some of filed types are extended from Oracle Object types. But i give error, and cant select. I have used OCCI connecion. In thi case all work fine. By when i select the table useing QOCI it fails. What is problem?

Query last error.
ORA-00932: inconsistent datatypes: expected BLOB got ADT


Thanks.