I need help urgently.

I am using Spring 1.1 + JPOX JDO 1.1 Alpha 2 with the JDOTemplate and Spring JdoTransactionManager.

I have set the JDO properties

"javax.jdo.option.NontransactionalRead=true"

I found no problem in doing read only stuffs, but when i try to make persist an object, I got the following error:

Code:
Transaction is not active; nested exception is org.jpox.exceptions.TransactionNotActiveException: Transaction is not active
org.springframework.orm.jdo.JdoUsageException
This is my DAO for your reference:

Code:
    public void insert(Object object) throws DataAccessException
    {
        Container container = (Container) object;
        getJdoTemplate().makePersistent(container);
    }
THANKS A LOT FOR YOUR HELP!