I was deploying my proyect and this exception occur...
How can fix that problem?
C'ya

--- MBeans waiting for other MBeans ---
ObjectName: persistence.units:ear=TissCA.ear,jar=TissCA.jar,unitName=TissCA
State: FAILED
Reason: javax.persistence.PersistenceException: org.hibernate.HibernateException: Hibernate Dialect must be explicitly set
I Depend On:
jboss.jca:service=DataSourceBinding,name=TissCADatasource

--- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
ObjectName: persistence.units:ear=TissCA.ear,jar=TissCA.jar,unitName=TissCA
State: FAILED
Reason: javax.persistence.PersistenceException: org.hibernate.HibernateException: Hibernate Dialect must be explicitly set
I Depend On:
jboss.jca:service=DataSourceBinding,name=TissCADatasource

The error clearly says that you have not set the dialect in the hibernate configuration file
Do something like this
<property name="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</property>
in the configuration fiile.

The dialect depends on the DB you are using.

**Don't forget to rate **

[quote="parasjain01"]The error clearly says that you have not set the dialect in the hibernate configuration file
Do something like this
<property name="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</property>
in the configuration fiile.

The dialect depends on the DB you are using.

**Don't forget to rate **[/quote]


look, In which put it in persistense.xml file , bucause I'm not using hibernate, I'm using EJB3.0 instead but occured the same exception ...

Could you help me to solve this problem?

Sincerelly,

Even in case of JPA with EJB3 you must be doing something like following
<persistence-unit name="sample">
<jta-data-source>java:/DefaultDS</jta-data-source>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/>
<property name="hibernate.hbm2ddl.auto" value="create-drop"/>
</properties>
</persistence-unit>

or in your persistence.xml you must be referring to the hibernate.cfg.xml

Since in you exception you are getting hibernate exception I am assuming that you are using hibenrate as the ORM solution

see
http://www.hibernate.org/hib_docs/entit ... ation.html
for more configuration options