One of the most confusing (and frustrating) things with Oracle Enterprise Manager is figuring out why agents are not uploading from time-to-time .
An unreachable agent could be almost anything, a firewall blocking the required upload port, invalid DNS entries, and hostname configuration issues to network related issues. In most of these cases, except for agent configuration issues, the DBA doesn’t have access to resolve these issues and require the assistance of different departments within the IT. Sometimes these external resources are not available to help troubleshoot and resolve network issues.
An unreachable agent could be almost anything, a firewall blocking the required upload port, invalid DNS entries, and hostname configuration issues to network related issues. In most of these cases, except for agent configuration issues, the DBA doesn’t have access to resolve these issues and require the assistance of different departments within the IT. Sometimes these external resources are not available to help troubleshoot and resolve network issues.
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