Catching DataAccessExceptions with AOP

I have a webapp using Spring + Hibernate through JPA, Spring is effectively translating all persitence exceptions into variations of DataAccessException.

I am now trying to catch these DataAccessExceptions in an AOP pointcut like this:

@Aspect
public class AspectException {


    @AfterThrowing(pointcut = "within(com.mypackage.dao..*)", throwing = "error")
    public void catchException(Throwable error) {
      MyOwnException e = new MyOwnException("ERROR!", error);
       throw e;
    }
}

Now this aspect works if in my DAO I throw a custom exception, but won't work with Spring's DataAccessExceptions!

Any idea why this is happenning?