<hibernate-configuration> <session-factory> ... <property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property> <property name="hibernate.c3p0.min_size">5</property> <property name="hibernate.c3p0.max_size">20</property> <property name="hibernate.c3p0.timeout">1800</property> <property name="hibernate.c3p0.max_statements">50</property> ... </session-factory> </hibernate-configuration>