Hibernate不能实时获取MySQL数据库的更新

<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
               <property name="hibernate.c3p0.max_size">20</property>  <!-- 在连接池中可用数据库连接的最大数目-->
               <property name="hibernate.c3p0.min_size">5</property>  <!-- 在连接池中可用数据库连接的最小数目-->
               <property name="hibernate.c3p0.max_statements">100</property>
               <property name="hibernate.c3p0.idle_test_period">120</property>
               <property name="hibernate.c3p0.acquire_increment">1</property>
               <property name="c3p0.testConnectionOnCheckout">true</property>
               <property name="c3p0.idleConnectionTestPeriod">18000</property>
               <property name="c3p0.maxIdleTime">25000</property>