SSH 连接DB2的问题

Question

项目使用的框架环境是：
hibernate 3.3.2
struts 2.1.8.1
spring 2.5.6
DB2版本为 8.2在spring的配置文件中；
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
  <property name="driverClassName" value="${jdbc.driverClassName}" />
  <property name="url" value="${jdbc.url}" />
  <property name="username" value="${jdbc.username}" />
  <property name="password" value="${jdbc.password}" />
  <!--<property name="autoCommit" value="true" />-->
</bean><bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan">
<list>
<value>com.tt.model</value>
</list>
</property>
<property name="hibernateProperties">
<props>
     <prop key="hibernate.dialect">org.hibernate.dialect.DB2Dialect/prop>
        <prop key="hibernate.current_session_context_class">thread</prop>
        <prop key="hibernate.show_sql">true</prop>
        <prop key="hibernate.format_sql">true</prop>
        <!--<prop key="hibernate.hbm2ddl.auto">create</prop>-->
    </props>
</property>
</bean>Properties文件：
jdbc.driverClassName=COM.ibm.db2.jdbc.app.DB2Driver
jdbc.url=jdbc:db2:testdb
jdbc.username=db2admin
jdbc.password=123456在DB2的命令行环境中连接数据库是正常的，但是TOMCAT就是启动不起来，报错信息：
07:04:17,609 ERROR ContextLoader:215 - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in file [D:\servicer\tomcat-6.0.20\webapps\familyPlanning\WEB-INF\classes\applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.AbstractMethodError: COM.ibm.db2.jdbc.app.DB2DatabaseMetaData.supportsGetGeneratedKeys()Z
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1338)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)....................
..............  请教是什么原因啊？？