If you are unable to see the events under events tab in components detail pane and if you are getting the error message
SPC-OCC-10298:An error occurred obtaining events from server xxxxx : NO_USER.
Please follow the below steps.
1) This is related to Archive Manager issue as that is responsible for the Events.
2) Check whether the Archive manager is running or not.
3) If it is not running please start the Archive manager.
4) In case it is running and not displaying the events please restart the Archive manager.
5) Now close the OneClick console and open a new console.
6) Now you should be able to see the Events under Events tab.
If this does not resolve your problem please open an issue with CA Support for further investigations.