java.lang.ClassCastException: [B cannot be cast to weblogic.servlet.internal.AttributeWrapper appearing on Server Log files causing performance issues on Console and other components

(Doc ID 2002004.1)

Last updated on NOVEMBER 05, 2016

Applies to:

Oracle WebLogic Server - Version and later
Information in this document applies to any platform.


The following error will appear on WebLogic Server log files when running stress tests on session intensive applications using lazy de-serialization. When this occurs, several issues will appear around the environment, such as stuck threads on several servers along with the Administration Console getting stuck trying to get the healthstate from the servers impacted by this problem.


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