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OVM Manager GUI Becomes Unusable with error "UnexpectedCharException: Illegal character" in AdminServer.log (Doc ID 2284059.1)

Last updated on OCTOBER 25, 2020

Applies to:

Oracle VM - Version 3.3.1 to 3.4.3 [Release OVM33 to OVM34]
Oracle Cloud Infrastructure - Version N/A and later
Linux x86-64


On Oracle VM 3.3.1 to 3.4.3 version, Oracle VM Manager becomes unusable, and it throws XMLMarshalException messages after REST API calls

Sometimes OVMM will throw the following exception, repeatedly, every 5 seconds:

Performing any action from the graphical interface fails, however, the REST interface and command line appears to still be responsive.

The issue can be reproduced at will with the following steps:


On the Oracle VM Manager server:


On a virtual machine, run this in a shell:


You will immediately see the error appear in the log.


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