hibernate can tell me witch field too long?

hi:
every code in my system runs ok,but when some variable that i insert into oracle is too long,hibernate can not tell me witch field is too long,this make the debug become very difficult!the hibernate only tell me witch entity error,it can not tell me ,witch field error(just throw some exception,tell me witch field is too long)!

thanks a lot!

It seems unlikely that the Hibernate folks would parse exception messages to see if the columns referred to are mapped columns that it knows something about.

On the other hand, they could try providing some form of validation that is based on the DDL of your database schema. If you think that would be a useful feature perhaps you should ask for that.

Another alternative would be for you to write your own validation that checks these things prior to attempting to persist a particular object.

You can use the validator framework for that.
http://www.hibernate.org/hib_docs/annotations/reference/en/html_single/#validator