Problem: Invalid usage of undeployed classloader

I'm working on WAS 7 app server.

I got : "Problem: Invalid usage of undeployed classloader" and my applications 开发者_如何转开发deployed dont work anymore

Meanwhile i had made no changes at all to app server. I restarted servers but no effect. Should I try to redeploy all applications?

Any similar experience?

Any help or hint would be highly appreciated. Thank you very much in advance.

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Look at the META-INF directory inside the EAR file that you deployed. Does it happen to have an ibmconfig directory?

If so, then this directory contains what's called "Application-Scoped Resources" and it is the root of your problem. Delete it, redeploy the EAR file and it might help.