changes after migrating from 10.2.0.4 to 10.2.0.5
I recently upgraded my 10.2.0.4 instance to 10.2.0.5 and I have noticed that the alert areas in the OEM screens have not had any new messages posted since before the upgrade to 10.2.0.5. And also in the OEM, when I first log on, the performance areas for instance disk i/o and instance throughput are 'unavailable' until 1 cycle of reporting has past. then the full width of the graphs is filled with the 'correct' data.
Is there something that I can check or change so that the alerts get posted? The performance displays are a minor nuscience but I don't want to ignore them incase they are an indicator that something is not setup correctly in OEM for 10.2.0.5.