Problem with Netbeans 5.5 and Oracle

On my computer I have this software:

WinXp Pro SP2,
jdk-6u1 and jre-6u1
netbeans 5.5
netbeans visualweb 5.5
iReport-1.3.2
Oracle client Release 9.2.0.1.0


I would want to connect netbeans to database Oracle Release 9.0.1.1.1
In Windows\Runtime I want add a Driver and connection


Driver
------------
Driver file : classes12.jar
Driver Class : oracle.jdbc.driver.OracleDriver
Name : oracle


Connection
------------
Name : Oracle
Driver Class : oracle.jdbc.driver.OracleDriver
Database Url : jdbc:oracle:thin:@10.5.0.1:1521:ORCL
User Name : xxxxx
Password : xxxxx


This connection is OK. The the menu tree it visualizes the sottomenu
Tables, Views and Procedures.
It would seem all ok but when I click on Table menu have an error :

"Unable to read the database structure,connection is broken; Function
not Supported"


The same database configuration I use it with ireport and is ok!!!!

which it is the problem?
Where I mistake?


Sorry for my bad
excuse for my bad English.
Thanks
Drk.

.