Hibernate version:
3.1
Mapping documents:
..
<class name="Colore" >
<id type="java.lang.Long" name="id" >
<column name="id" />
<generator class="native" />
</id>
<property type="string" name="descrizione" />
<property type="string" name="name" not-null="true" unique="true" />
</class>
....
<class name="Taglia" >
<id type="java.lang.Long" name="id" >
<column name="id" />
<generator class="native" />
</id>
<property type="string" name="name" not-null="true" unique="true" /> <property type="string" name="descrizione" />
</class>
...
Code between sessionFactory.openSession() and session.close():
..
int numberofItems = 40;
HibernateUtil.getSessionFactory().getCurrentSession().beginTransaction();
List colori = new ArrayList();
List taglie = new ArrayList();
for (int i=0;i<numberofItems;i++) {

final Colore greenGrass = new Colore();
greenGrass.setName("colorAuto"+i);
PersistedObjectManager.persist(greenGrass);
colori.add(greenGrass);

final Taglia taglia = new Taglia();
taglia.setName("autoTaglia"+i);
PersistedObjectManager.persist(taglia);
taglie.add(taglia);

log.debug("Current color and taglia added");
}
HibernateUtil.getSessionFactory().getCurrentSession().flush();
HibernateUtil.getSessionFactory().getCurrentSession().clear();
HibernateUtil.getSessionFactory().getCurrentSession().getTransaction().commit();
..
Full stack trace of any exception that occurs:
[java] Exception in thread "main" java.lang.StackOverflowError
[java] at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:188)
[java] at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1900)
[java] at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2349)
[java] at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2860)
[java] at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:771)
[java] at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1289)
[java] at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:2259)
[java] at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:423)
[java] at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:1960)
[java] at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1385)
[java] at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1138)
[java] at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:675)
[java] at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1027)
[java] at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
[java] at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:139)
[java] at org.hibernate.loader.Loader.getResultSet(Loader.java:1669)
[java] at org.hibernate.loader.Loader.doQuery(Loader.java:662)
[java] at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
[java] at org.hibernate.loader.Loader.doList(Loader.java:2150)
[java] at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029)
[java] at org.hibernate.loader.Loader.list(Loader.java:2024)
[java] at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:94)
[java] at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1550)
[java] at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:298)
......
Name and version of the database you are using:
5.0 Mysql
The generated SQL (show_sql=true):
Nothing ... it crash before start to generate it.
[b]Debug level Hibernate log excerpt:[/b
Nothing ... it crash before start to generate it.

Others interested hbm.properties:
hibernate.default_batch_fetch_size 500
hibernate.jdbc.batch_size 5000

Any Ideas ?
I've used also a StatelessSession but the same error occur.....

Bye
Stefano

Stefano,

What version of the JDBC driver is this? It looks like it's not one of the more current ones from the line numbers in the stack trace. I'd suggest upgrading to Connector/J 3.1.12 or 5.0.0 beta.

-Mark