Despite that the vague error, Remote host closed connection during handshake, maybe a result of multitude of possible reasons, the reason why this is occurring is because the remove client is dropping the connection.
I notice this issue once the WLS admin was restarted after the schedule task became unresponsive and remaining in the Interrupt status despite that I bounced the WLS managed server.
While integrating OIM 11g with the ICF connector resource for reconciliation, I would often get the following error, javax.servlet.ServletException: java.lang.InstantiationError: java.lang.VirtualMachineError after a couple of attempts:
When integrating the Shibboleth IDP and the Shibboleth SP, I would receive the following saml2 metadata issue
The system encountered an error at
To report this problem, please contact the site administrator at root@localhost.
Please include the following message in any email:
opensaml::saml2md::MetadataException at (http://HOSTNAME/secure/)
Unable to locate metadata for identity provider (https://HOSTNAME/idp/shibboleth)