Hibernate version: 2.1.6

Name and version of the database you are using: Db2 v8.1.5

I need to override "net.sf.hibernate.sql.Update" class for parameterized sql statements created by hibernate & associated with each Business Object (Objects mapped to a *.hbm.xml to access database via hibernate). When I tried to override "net.sf.hibernate.sql.Update" class i failed. I have hibernate source & I can change this class code but this not licensed. Now I have a simple question that needs an answer: How could I override "net.sf.hibernate.sql.Update" class ?
Immediate help will be highly appreciated .. Thanks!

I don't really get your problem here. Do you have technical problems while changing this class?

my point is I want to override this class rather than changing it. When I tried to do so using inheritance (e.g. MyUpdate class) I found some final classes in my path from my own code using hiberbnate ending to hibernate core class Update .. see what I mean ?

Chage it to open it and provide this open version in the LGPL speaking way. Then you're fine with any licensing issue