Using JOTM transaction manager Doesn't works on Tomcat

Facing a strange problem here, below is the configuration i am using: 1. Apache Tomcat 6.0.26 2. mySql 3. Spring framework+ Hibernate

We have used JOTM for transaction management

<bean id="jotm"
      class="org.springframework.transaction.jta.JotmFactoryBean" />
<bean id="transactionManager"
      class="org.springframework.transaction.jta.JtaTransactionManager">
    < property name="userTransaction" ref="jotm" />
</bean>

The problem is that i have one service which creates and entity on my local DB and then calls a web service on failiure of which the created entity in local DB should be rolled back. On failure of the web service c开发者_运维知识库all i am throwing RunTimeException which should ideally rollback the transaction as per mentioned in the spring configuration file. However this is not happening. Instead of JOTM if i am using Hibernate transaction manager it is rolling back the transaction. Can someone please throw some light on if i am missing out on anything while implementing through JOTM.

Appreciate the help in advance,

Vaibhav