With 3.1 there seems to be a bug generating upgrade scripts if the table names are quoted.

In org.hibernate.tool.hbm2ddl.DatabaseMetadata.getTableMetadata() there is a check that looks if the database storesUpperCaseIdentifiers() or storesLowerCaseIdentifiers(). PostgreSQL e.g. returns on the second true which is the default behaviour for it if NO quoted identifiers are used.

In my case, I use upper letters within in my quoted table name, getTableMasterdata() tries to convert my table name into lower case first. Of course after that, the lowercase latter is not found within the databse anymore, so the method returns null.

I think there are some checks missing against storesLowerCaseQuotedIdentifiers(), ...

Regards
Darius

Ok, after diggin' around for a while, I've found a Jira that was created already on exactly the same issue:

http://opensource.atlassian.com/projects/hibernate/browse/HHH-1205

I am not that happy about the fact that the jira was closed with the reason that this is not a public API ...

create a patch and submit it as a new jira with a testcase that shows it working.