Error com insert no hibernate usando postgree

Could not synchrorg.hibernate.exception.DataException: Could not execute JDBC batch update

at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:77)

at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)

at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:249)

at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:235)

at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)

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 hibernateUtility.HibernateUtility.commitTransaction(HibernateUtility.java:63)

at hibernate.pesistencia.AreaDeEntregaDao.inserir(AreaDeEntregaDao.java:25)

at test.Test.main(Test.java:16)

Caused by: java.sql.BatchUpdateException: Entrada em lote 0 /* update classesbasicas.AreaDeEntrega */ update public.areadeentrega set nome=Boa Viagem, descricao=Area de entrega com grante potencial where id=1 foi abortada. Chame getNextException para ver a causa.

at org.postgresql.jdbc2.AbstractJdbc2Statement$BatchResultHandler.handleError(AbstractJdbc2Statement.java:2497)

at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1298)

at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:347)

at org.postgresql.jdbc2.AbstractJdbc2Statement.executeBatch(AbstractJdbc2Statement.java:2559)

at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeBatch(NewProxyPreparedStatement.java:1723)

at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)

at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:242)

… 10 more

<property name="nome" column="nome"/>
<property name="descricao" column="descricao"/>

public void inserir(AreaDeEntrega area)throws Exception{

Session session = HibernateUtility.getSession();

HibernateUtility.beginTransaction();

session.saveOrUpdate(area);

<a href="//session.flush">//session.flush</a>();

HibernateUtility.commitTransaction();

HibernateUtility.closeSession();

}