Getting a handle to native Oracle Connection in Hibernate 4 to run a stored proc

Question

This is a follow-up to Executing native query with Hibernate 4.1

I\'ve tried the options in the listed answer but we get errors and are unable to unwrap the proxied

Answer 1

Option 2 code works correctly.

ie.

OracleConnection oracleConnection = connection.unwrap( OracleConnection.class );

The problem was we had 2 versions of ojbc.jar - one as a Jboss module and one within the EAR, hence the ClassCastException.

As mentioned in the comments, this code also works

oracle.jdbc.driver.OracleConnection oc = (oracle.jdbc.driver.OracleConnection) connection.getMetaData().getConnection();