Make sure to use a 0 based value as the first parameter in the setXXX() methods used on the Query object when setting parameterized values instead of being 1 based.

Example:
Query query = session.createQuery(" from Widget as widget where widget.persistence = ? " );

setString( 1, "hibernate" ); //hibernate does not like you
setString( 0, "hibernate" ); //hibernate likes you

If this doesn't help anyone please disregard. The logs didn't do much to point to the mistake.

regards

I feel alot safer using named parameters instead. I would recommend using named parameters if possible. Some advantages include being self-documenting, and not as prone to errors related to the position of the parameter in the query.

Example:
Query query = session.createQuery(" from Widget as widget where widget.persistence = :persistence " );

setString( "persistence", "hibernate" ); //hibernate likes you


Joe