We are running Oracle Enterprise Manager 10g Release 5 Grid Control 10.2.0.5.0
There are two critical alerts but I think they are related to the same problem. Both problems are with the target "Management Services and Repository". One is the metric Notification UpDown - the current status is down with the message, "NOTIFICATION JOB ERROR: Job schedule time is invalid".
The other metric is DBMS Job Invalid Schedule, the job name is Notification Check, critical severity and the message, "DBMS Job Invalid Schedule for Notification Check exceeded the critical threshold (INVALID). Current value: INVALID".
I've trawled Google and found this OMS and Repository but it only tells you how to disable the job and run it. This has not cleared the problem. Does anyone have any ideas?