I was recently asked by someone to investigate a problem they had with their EM12c implementation and one of the things I wanted to look at was the repository errors. These errors are stored within the SYSMAN schema in a table called MGMT_SYSTEM_ERROR_LOG, there is also a table called MGMT_SYSTEM_PERFORMANCE_LOG that makes for interesting reading but we'll cover that another time.
The data in these tables doesn't hang around forever, it is purged after 30 days.
In 10g this was easy you simply navigated to https://yourhost.com:7799/em/console/health/healthSystemError and you could filter the errors by various attributes. This was one of the pages I visited regularly to make sure that my EM system was running smoothly, okay in 10g it had it's limitations, it only displayed the first 2000 errors (what the hell first 2000 errors I hear you gasp), yes that's right just the first 2000, but as I said you can filter the results. My small test system has a mere 20 agents but it has generated approximately 2500 errors in the last 30 days. Okay it's not as bad as it first seems there are only 185 distinct errors but nonetheless that's 185 things I could potentially have to do something about.
So the point of this blog.
Don't despair, the page is still there, it's not gone there is just no link to it from the current UI, you just have to know it exists and bobs your uncle ....
