Hello, guys...

I'm pretty new to Nhibernate, and I'm having problems with the hibernate.hbm2ddl.auto parameter in the configuration XML.

I'm bulding a CRUD generator based on POCOs, to speed up my team development, and that includes creating a dynamic hbm.xml file and database stuff. The hbm.xml is running well, but the oracle stuff is driving me nuts. I set up the hibernate.hbm2ddl.auto property as "create", so if a table doesn't exists, hibernate creates it for me. But I'm having problems with the data and the generator. Why the generator is re-set everytime the applications starts? Why the data is droped in every application start? I thought it just happened if the hibernate.hbm2ddl.auto is set as "create-drop".

Anybody know why is this happening? What workaround should I do?

Thankfully..
Luiz Cavalcanti

I'm having the same problem, hibernate.hbm2ddl.auto is set to 'create' and everytime i restart the application all the data in the db disappears. Is this actually what it is supposed to do? Is there a way to make it do nothing if the tables are already generated?.. thanks

The configuration is documented at:
http://www.hibernate.org/hib_docs/v3/re ... ation.html

the value creates the tables only if they are missing.

i'm not sure.. but i think nh does not implement schema update.. only create and create-drop