Sushanth :
My hibernate version is 4.2.18 and oracle is 11G The dialect used to connect to 11G is Oracle9iDialect Now we are upgrading the DB to 12C, should my dialect also gets changed to Oracle10gDialect or is it okay if I continue with Oracle9iDialect?
Karol Dowbecki :
You can try continue using Oracle9iDialect and see what happens but that's definitely not a good idea as Hibernate 4.2 is a legacy (4.2.18 was released in early 2015). You should update Hibernate and use Oracle12cDialect which is now provided.