Boa noite pessoal, estou desenvolvendo uma aplicação utilizando Hibernate porém ao gravar as informações gera esta exceção, poderiam me ajudar a respeito?
Desde já, agradeço. 
run:
log4j:WARN No appenders could be found for logger (org.hibernate.cfg.annotations.Version).
log4j:WARN Please initialize the log4j system properly.
Hibernate: select pessoa_.idpessoa, pessoa_.nomepessoa as nomepessoa1_, pessoa_.rg as rg1_, pessoa_.cpf as cpf1_, pessoa_.email as email1_, pessoa_.endereco as endereco1_, pessoa_.complemento as compleme7_1_, pessoa_.bairro as bairro1_, pessoa_.cep as cep1_, pessoa_.uf as uf1_, pessoa_.cidade as cidade1_, pessoa_.telres as telres1_, pessoa_.telcel as telcel1_, pessoa_.telcom as telcom1_, pessoa_.sexo as sexo1_, pessoa_.dtnasc as dtnasc1_, pessoa_.numero as numero1_, pessoa_.tip_logr as tip18_1_ from public.pessoa pessoa_ where pessoa_.idpessoa=?
Hibernate: insert into public.paciente (tipopele, tiposangue, nompai, nommae, altura, peso, idpaciente) values (?, ?, ?, ?, ?, ?, ?)
06/06/2011 23:14:22 pep.business.bo.PacienteBO addPaciente
GRAVE: null
org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update
	at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:71)
	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
	at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:253)
	at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:237)
	at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:141)
	at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
	at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
	at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
	at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
	at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
	at pep.integration.dao.DAOHibernateImpl.commit(DAOHibernateImpl.java:33)
	at pep.integration.dao.DAOHibernateImpl.adiciona(DAOHibernateImpl.java:66)
	at pep.integration.dao.postgresql.PacienteDbDAO.manterPaciente(PacienteDbDAO.java:20)
	at pep.integration.dao.PepPST.manterPaciente(PepPST.java:29)
	at pep.business.bo.PacienteBO.addPaciente(PacienteBO.java:34)
	at pep.business.bo.PacienteBO.addPacienteBO(PacienteBO.java:30)
	at pep.business.bd.PacienteBD.addPacienteBO(PacienteBD.java:20)
	at pep.client.FormPaciente.gravar(FormPaciente.java:774)
	at pep.client.FormPaciente.jGravarActionPerformed(FormPaciente.java:744)
	at pep.client.FormPaciente.access$100(FormPaciente.java:12)
	at pep.client.FormPaciente$2.actionPerformed(FormPaciente.java:183)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
	at java.awt.Component.processMouseEvent(Component.java:6289)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
	at java.awt.Component.processEvent(Component.java:6054)
	at java.awt.Container.processEvent(Container.java:2041)
	at java.awt.Component.dispatchEventImpl(Component.java:4652)
	at java.awt.Container.dispatchEventImpl(Container.java:2099)
	at java.awt.Component.dispatchEvent(Component.java:4482)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
	at java.awt.Container.dispatchEventImpl(Container.java:2085)
	at java.awt.Window.dispatchEventImpl(Window.java:2478)
	at java.awt.Component.dispatchEvent(Component.java:4482)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:644)
	at java.awt.EventQueue.access$000(EventQueue.java:85)
	at java.awt.EventQueue$1.run(EventQueue.java:603)
	at java.awt.EventQueue$1.run(EventQueue.java:601)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
	at java.awt.EventQueue$2.run(EventQueue.java:617)
	at java.awt.EventQueue$2.run(EventQueue.java:615)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:614)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused by: java.sql.BatchUpdateException: Entrada em lote 0 insert into public.paciente (tipopele, tiposangue, nompai, nommae, altura, peso, idpaciente) values (, , kkaskskl, sdlkjflsjdflkjdfldskjfklsdj, 1.58, 51.0, 34) foi abortada. Chame getNextException para ver a causa.
	at org.postgresql.jdbc2.AbstractJdbc2Statement$BatchResultHandler.handleError(AbstractJdbc2Statement.java:2537)
	at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1328)
	at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:351)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeBatch(AbstractJdbc2Statement.java:2674)
	at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
	at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246)
	... 54 more