Dear Users,

I found strange problem while implementing below classes.
When i started tomcat server, I found tables not getting created for Oracle database.
Below is code snaps. Please help.

In persistence.xml I configured like below.
<property name="hibernate.hbm2ddl.auto" value="create-drop" />


@Entity
@Table(name = "sub_invoice")
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name = "type_col", discriminatorType = DiscriminatorType.INTEGER)
public abstract class Invoice implements java.io.Serializable, Cloneable {}

@Entity
@DiscriminatorValue("1")
public class CustomerInvoice extends Invoice {}