All Diagnostic Agents unassigned
since the day before yesterday we have major problems with our Diagnostic Manager environment.
All Agents unassigned itself and disappeared from the Agent Administration and are now shown as offline.
On OS they are running. But in the work logs i found following error, wich appears every minute in every Agent-Log (dev_smdagent):
J Fri Oct 23 07:34:03 2015
38933 J :  07:34:03 ***Warning: Thread.stop(): Thread.stop() called using java.lang.ThreadDeath in com.sap.engine.services.rmi_p4.P4ObjectBrokerClientImpl. close()V:264
We changed nothing in the Solution Manager 7.1, user SMD_AGT is all right und properly configured.
The only thing was, that our SLD was offline for two days, due to an Oracle 12 Upgrade.
Any Ideas ?