Not clearable : 1 distinct types of ORA- errors have been found in the alert log.

Question

( Correct me if I'm wrong.)
What could be the reason for the fact that the event "1 distinct types of ORA- errors have been found in the alert log." is not clearable?
Even if the problem is solved, the ORA- error will still be in the alert.log.
Therefore the event would eventually only disappear after 7 days.
Doesn't sound very logical to me.

Answer 1

- The event page showing a warning event for "Generic Alert Log Error Status" metric,
- "Generic Alert Log Error Status" event is a statefull metric,
- On each evaluation of the metric defined as 'Statefull', the Cloud Control Agent recalculates the severity,
- This means, EM Agent scans the alert log for ORA errors, "Generic Alert Log Error Status" will return the number of ORA error found,
- Whenever the returned number is grater than the assigned thresholds of "Generic Alert Log Error Status", an alert is raised on EM console,
- On the next scan of alert log file, this alert will be cleared ONLY if the collected value is less than the assigned threshold,
- By checking your system, the warning threshold of "Generic Alert Log Error Status" is 0, so whenever a single ORA error is found in alert log, a warning event will be raised and you will not be able to clear it manually as this is a stateful metric.
There are three cases where this alert can be cleared:
1. The agent found 0 ORA errors in Alert log, then the alert will be cleared automatically
2. Manual clear: By disabling/enabling the metric
3. Manual clear and further not receiving similar alerts frequently: By assigning higher thresholds values
So, I suggest to disable the metric, then, enable it after some time as follows as follows:
- Go to the problematic database home page >> open the 'Oracle Database' drop-down menu >> 'Monitoring' >> 'Metric and Collection Settings',
- Choose 'All metrics' from the 'View' drop-down list >> search for the 'Generic Alert Log Error Status' metric,
- Click the pencil icon under 'Edit' column opposite to the above metric >> remove the Warning Threshold (make it empty) >> 'Continue' >> 'OK'.
- Wait for the next collection schedule in order for the warning events to be cleared, then, enable the metric again with the same steps (setting Warning Threshold=0).
References:
Note 604385.1 Receiving "Clear" Notifications Unexpectedly for 'Generic Alert Log Error Status' Metric
Note 733784.1 What are Statefull and Stateless Metrics in Enterprise Manager - Explanation and Example
HTH
Mani