the file looks OK. Does xwiki run with java 1.5_0x an dtomcat 5.5 ? Regards, Miguel A. Bayona ===== file hibernate.cfg.xml ====== <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <property name="show_sql">false</property> <property name="use_outer_join">true</property> <property name="dbcp.defaultAutoCommit">false</property> <property name="dbcp.maxActive">50</property> <property name="dbcp.maxIdle">5</property> <property name="dbcp.maxWait">30000</property> <property name="dbcp.whenExhaustedAction">1</property> <property name="dbcp.ps.whenExhaustedAction">1</property> <property name="dbcp.ps.maxActive">20</property> <property name="dbcp.ps.maxWait">120000</property> <property name="dbcp.ps.maxIdle">20</property> <property name="connection.url">jdbc:mysql://localhost/xwiki</property> <property name="connection.username">xwiki</property> <property name="connection.password">xwiki</property> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <property name="connection.provider_class">com.xpn.xwiki.store.DBCPConnectionProvider</property> <property name="connection.pool_size">50</property> <property name="statement_cache.size">50</property> <property name="dialect">org.hibernate.dialect.MySQLDialect</property> <!-- Mapping files --> <mapping resource="xwiki.hbm.xml"/> </session-factory> </hibernate-configuration>