MATLAB and ORACLE

[cal]

I try to initiate a connection between matlab and oracle, and all that
I get is:
java.lang.Class.forName('oracle.jdbc.driver.OracleDriver')
??? Java exception occurred:
java.lang.ClassNotFoundException: oracle/jdbc/driver/OracleDriver
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)

The problem do not come from the classpath, because the files:
C:\ORACLE\ORA92\jdbc\lib\ojdbc14.jar

C:\ORACLE\ORA92\jdbc\lib\nls_charset12.zip


are in my javaclasspath and when I try: oracle.jdbc.driver.OracleDriver

I get:
ans =
oracle.jdbc.driver.OracleDriver@11c248a

so it seems that matlab find the driver...

any idea?