Using apllication jars before weblogic ones

Question

Hi,
we have an old j2ee application based on ADF (version 10.1.3)/TopLink
and need to deploy it on WebLogic (10.3.6). After many trials and errors we
were successfull, but this action was needed - removing library
com.oracle.toplink_1.1.0.0_11-1-1-6-0.jar from weblogic. We were not able
to make our apllication's library toplink.jar (in WEB-INF\lib) be used first.
We tried to modify weblogic.xml on Weblogic server
<container-descriptor>
*<prefer-web-inf-classes>true</prefer-web-inf-classes>*
</container-descriptor>
, tried to deploy our apllication via ear instead of war with
META-INF\weblogic-application.xml:
<?xml version="1.0" encoding="UTF-8"?>
<weblogic-application xmlns="http://www.bea.com/ns/weblogic/90">
<application-param>
<param-name>webapp.encoding.default</param-name>
<param-value>UTF-8</param-value>
</application-param>
<prefer-application-packages>
<package-name>oracle.toplink.tools.*</package-name>
</prefer-application-packages>
</weblogic-application>
But application still reports
java.lang.VerifyError: (class: oracle/toplink/tools/sessionmanagement/SessionManager, method: getWASSession signature: (Loracle/toplink/tools/sessionconfiguration/WASXMLSessionConfigLoader;Ljava/lang/ClassLoader;)Loracle/toplink/publicinterface/Session;) Wrong return type in fu...
which means, that still WebLogic version of toplink library is used before application one...
Do you have any other idea, what we must to do ? Thanks

Answer 1

Hi,
What you've tried doing is inducing a filtering classloader..
Have you ensured to add the dependency toplink library in the APP-INF/lib directory ?
As you have set the filtering classloader in the weblogic-application.xml file
If you've set filtering classloader in weblogic.xml, you need to add the dependency library under web-inf/lib directory.
Hope this helps!!
Also share the complete stacktrace of the error if the issue still persists...
Thanks,
Vijaya