Erro no Hibernate

Galera olha o erro que ta danu no hibernate, na hora em que eu mando gravar no banco.

exception

javax.servlet.ServletException: could not insert: [br.com.marcelo.modelo.Cliente]
	org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:523)
	org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

org.hibernate.exception.GenericJDBCException: could not insert: [br.com.marcelo.modelo.Cliente]
	org.hibernate.exception.ErrorCodeConverter.handledNonSpecificException(ErrorCodeConverter.java:92)
	org.hibernate.exception.ErrorCodeConverter.convert(ErrorCodeConverter.java:80)
	org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
	org.hibernate.persister.entity.BasicEntityPersister.insert(BasicEntityPersister.java:1786)
	org.hibernate.persister.entity.BasicEntityPersister.insert(BasicEntityPersister.java:2187)
	org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:34)
	org.hibernate.engine.ActionQueue.execute(ActionQueue.java:239)
	org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:238)
	org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:158)
	org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:104)
	org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:184)
	org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
	org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:173)
	org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
	org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
	org.hibernate.impl.SessionImpl.save(SessionImpl.java:445)
	org.hibernate.impl.SessionImpl.save(SessionImpl.java:440)
	br.com.marcelo.hibernate.DAO.adiciona(DAO.java:22)
	br.com.marcelo.action.CadastrarClienteAction.execute(CadastrarClienteAction.java:22)
	org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

O que pode ser?

resolvido…

foi so baixar a nova versao do drive do mysql…

valeu