RAD 6.0.1, ClassCastException

[Sean Sullivan]

I am using Rational Application Developer 6.0.1

Inside RAD, I have a web application that runs on the Websphere 6.0 Test Environment.

The application uses JNDI to lookup a DataSource. The lookup is successful but the cast is unsuccessful:

java.lang.Object objRef = ctx.lookup(dataSourceName);
DataSource dataSource = (DataSource) objRef;


java.lang.ClassCastException: com/ibm/ws/rsadapter/jdbc/WSJdbcDataSource incompatible with javax/sql/DataSource


I have also tried using

DataSource dataSource = (DataSource) PortableRemoteObject.narrow(objRef, DataSource.class);

but it I get the same ClassCastException.

How can I fix this?

Sean

[Sean Sullivan]

The ClassCastException was due to the fact that I had
a copy of the Oracle type 4 driver JAR in my WEB-INF/lib folder.

I removed the Oracle JAR from WEB-INF/lib and the ClassCastException went away!