For test purposes I create org.hibernate.eclipse.console.test -> org.hibernate.eclipse.console.db.test.BigDBCreateTest - the main goal of this class is creation test database with specified number of related tables. Then with help of BigDBCreateTest I create a big enough database with 3000 tables in it. I use MySQL as DBMS. I create Hibernate configuration for this test db. Then I try to run Hibernate Code Generation on it. Screenshots in attachment.