thanks to u , i got it right this time ... and thought of describing the method i followed for the help of any other , who might need this in the future.. what i did was i add the following property to persistence.xml <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" /> also , as u said , <property name="hibernate.hbm2ddl.auto" value="update"/> too.. so this works fine.Even i restart the JBOSS server , the table is persistent in the database.. But , if i used <property name="hibernate.hbm2ddl.auto" value="create-drop"/> instead. ( which i tested by using it earlier ) and , when the JBOSS restarted the table will be created from the beginning , when the JBOSS is shutdown , the table is vanished. regds Saji View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4137893#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...