Upgrade issue: SEVERE *** ERROR *** Could not initialize class javax.xml.bind.DatatypeConverterImpl Issue During an upgrade observed that the upgrade monitor seems to be stuck on the loading plugins phase and the MID servers don't appear to have been upgraded. ReleaseUpgrade to any version of Orlando below Patch 6 or Paris below Patch 1CauseEffectively this issue is an accumulation of the above problem leading up to the observed issue as per known problem. KB0827022 - Outbound HTTP/REST communication is not working as expected as a result this may impact integration of instance with HI and other outbound requests - must be logged into NowSupport to view. The upgraded monitor gets stuck on the step before the point of failure, in the observed case this was loading file sys_user_role_ea2b1689b7e1401032d189fbde11a99fResolutionBased on the problem upgrading to Orlando Patch 6, Paris Patch 1 or up.