Spring Application Context Oracle Cache

I have a problem with the sync between oracle database and my spring web application . I'm able to insert in the database from my application back-office but when i try to add a row in the database and then adding an insert from my application i get a constraint error because the id already exist .

So i think that's a caching problem

This is my application Context xml file

 <bean id="dataSource" class="oracle.jdbc.pool.OracleDataSource" destroy-method="close"> 
    <property name="URL" value="myurl" /> 
    <property name="user" value="myuser"/> 
    <property name="password" value="mypass"/> 
    <property name="connectionCachingEnabled" value="true"/> 
</bean>