HibernateException：在Oracle DB中将列从数字更改为varchar2后，列类型错误

Question

I've got a strange behaviour in Hibernate after changing a column from number to varchar2 in a Oracle Database.

Caused by: org.hibernate.HibernateException: Wrong column type in XXX for column SESSION_TOKEN. Found: varchar2, expected: number(10,0)

In my corresponding domain object I changed the variable from Integer to String like this:

@Column(name = "SESSION_TOKEN", nullable = true)
private String sessionToken;

I already have the following property in the persistence.xml

<property name="hibernate.hbm2ddl.auto" value="validate"/>            

So it seems to me, that there is something like a internal cache which still contains the old description of the table? Any ideas?? My Environment: JBoss AS: 7.1.1 Oracle: 11.2

Answer 1

Problem solved! Very strange!! After reboot of my laptop the problem was gone! Thanx zombie!