(un)deploy a single component in an .ear File in WLS 6.1

Question

I deployed a .ear File, that contains 25 EJBs and 5 webapplications) in WLS
6.1. Everything is fine. Now i tried to undeploy a single EJB that is
contained in the .ear File. But when i mark this EJB in the WLS admin
console as undeployed, all other EJBs and WARs are marked as undeployed.
Is this becaue of the J2EE specification or is it a weblogic feature /
problem?
alexander

Answer 1

This issue is seen only with IBM JDK 1.6 (any SR) because, IBM packages the xerces version 2.9 as a part of $IBM_JDK_HOME/jre/lib/xml.jar.
I think/understand that, your application is also packaging a xerces impl jar(different version otherthan xerces version 2.9) in WEB-INF/lib of you application.
So, to make sure that the WebLogic Server uses the xerces impl jar that has been packaged, you are trying to use the filtered classloader in weblogic-application.xml
But the filtered classloader would not have any effect, since, the IBM JDK packaged xerces parsers would also be with the same package structure. So, I think you should try with setting the following in WEB-INF/weblogic.xml inside the <weblogic-web-app> tag.
<container-descriptor>
<prefer-web-inf-classes>true</prefer-web-inf-classes>
</container-descriptor>
I think this should work with WLS 11gR1PS2 (WLS 10.3.3).