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Oracle Access Manager (OAM) WLS Server Running But Default Port Is Not Listening On oam_server After Applying Patch (Doc ID 2917153.1)

Last updated on DECEMBER 21, 2022

Applies to:

Oracle Access Manager - Version and later
Information in this document applies to any platform.


After patching the OAM, the managed server was coming up to running but the oam.proxy listener component (the piece that webgates connect to ) was not coming up.

Verified by observing these messages in the Weblogic console:

the following error messages upon activation of changes.
* Error An error occurred during activation of changes, please see the log for details.
* Error java.lang.ClassCastException: cannot be cast to
* Error cannot be cast to


 Patches were applied.


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