Problems Overriding DBTransactionImpl2/DatabaseTransactionFactory

I have been following the tutorial in the JDeveloper Developer's Guide 25.8.4 How to Implement a Custom Constraint Error Handling Routine to catch and handle database constraint messages in our JHeadstart-based applications.
Implementing and testing the code through my Embedded OC4J worked flawlessly. However, a flagrant problem occurred when the app was deployed to a real application server. When deployed to our Oracle SOA Suite instance the customized code is simply not being used. My implementing is doing nearly the exact same thing as the tutorial in the Developer's Guide, except that instead of nulling the exceptions, I am throwing a new JboException with a nice error message for the user.
What would cause my code to work fine in the Embedded OC4J, but not in a deployed Oracle Application Sever instance? Would a simple library version conflict cause such a disparity? If so, how would I go about comparing my Embedded OC4J ADF libraries to the ADF libraries on our application server?
Thanks
Enviroment Information
JDeveloeper 10.1.3.1.0.3984
JHeadstart 10.1.3.26
Oracle SOA Suite 10.1.3.1.0

Hello,
> What would cause my code to work fine in the Embedded OC4J, but not in a
deployed Oracle Application Sever instance? Would a simple library version
conflict cause such a disparity?
In general, we indeed suspect a different version of the ADF Faces libraries.
For what concerns your case, would it be possible that another ADF BC application is running in the same OC4J instance ?
I'm asking that because I logged the following bug a few days after a customer reported that the first application was using the correct DBTransactionFactory, but any other application deployed in the same OC4J was using the same instance of the same DBTransactionFactory (Bug 7000435 - ADF BC APPS DEPLOYED ON THE SAME OC4J INSTANCE SHARE SAME DBTRANSACTIONFACTORY).
> If so, how would I go about comparing my Embedded OC4J ADF libraries
to the ADF libraries on our application server?
No easy way that I'm aware of.
We often recommend to re-install the ADF libraries, that's faster than trying to find out the difference.
If you really want to check the versions, you can see them by opening the JAR files and checking the version in the MANIFEST.
Regards,
Didier.

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