Dynamicaly add a shared lib using deployment plan

Question

Hi,
I would like to dynamically add a shared lib reference to my EAR application.
It seems to be possible using deployement plan but to take effect weblogic want I redeploy the application.
When I update my application and if I choose Update this application in place with new deployment plan changes. (A deployment plan must be specified for this option), thre is no error but when I try to instanciate my class, I get a "ClassNotFoundException"
If I choose Redeploy this application using the following deployment files: it works fine but it is not compliant with my requirements (I don't want to redeploy for that).
is it the normal behavior or I miss something ?
Best Regards,
C.

Answer 1

WebLogic does the following if an application references a shared library:
Classes of the library are added to the classpath of the application and the deployment descriptors are merged in memory.
When an application (ear) is deployed weblogic creates application classloaders. Now if we add a shared library we need
to create the classloaders again (to load the classes of the shared library) - this can be accomplished by redeploying the
application.