Where does Oracle Enterprise Manager derive the "User Logon Time" metrics from? Oracle's enterprise manager has a metric named "User Logon Time" and will show an alert if that exceeds a certain threshold. 

I would like to retrieve the numbers stored for this metrics directly using a SQL query.

However, I cannot find any view where this is stored. I can find "Logons Per Sec", "Logons Per Txn", "Current Logons Count" in the DBA_HIST_SYSMETRIC_SUMMARY view and "logons cumulative" and "logons current" in the DBA_HIST_SYSSTAT  view. 

The view DBA_HIST_METRIC_NAME also doesn't list any metric of that name. 

So where does the Enterprise Manager get that information from? 

I'm talking about this alert:
"Logon Per Sec" and "Logon Per Tx" can be found in OEM REPOSITORY (e.g. look in sysman.mgmt$metrics_daily view, the metric_name = 'instance_throughput' and metric_column like 'logons%'). The other metric will also be there, these are maintained in OEM REPO not in individual targets.