Undeploying a monitored component from a node agent can cause a deadlock (6481273)

In the process of disabling a monitored component, it should be undeployed from its node agent, but this sometimes freezes. Specifically, the cacaoadm undeploy command never returns and monitoring is blocked in the entire node agent.

Solution Kill the process and restart the node agent, the master agent, and the Monitoring Console with the procedure To Restart a Node Agent in Sun Java Enterprise System 5 Monitoring Guide.