On the All Metric Errors page, you can:
View all the metric errors associated with all the targets you manage within Enterprise Manager.
Access overview information about the target by clicking the target's name.
Access error details information about the target by clicking the message associated with the metric.
A metric error is an error received when the Management Agent tried to evaluate the metric. Metric errors are usually due to configuration issues. Once you fix the cause of the error, the metric error will be automatically cleared during the next metric evaluation cycle.
To obtain detailed information about the error, click the message associated with the target. For example, if you get the message: 'Could not login to DB', the Error Details page will explain why you cannot log into the database (TNS: no listener or invalid username/password).
Many times these errors are due to installation and configurations issues. See the following manuals for information:
Enterprise Manager Information Roadmap
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