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EM 13c: Connection to the Target Database Fails with Error "IO Error: The Network Adapter could not establish connection" (Doc ID 2502523.1)

Last updated on APRIL 12, 2023

Applies to:

Enterprise Manager for Oracle Database - Version and later
Information in this document applies to any platform.


From EM Console, Connecting to the Target database by OMS fails with the following error:


Database target > Performance > Top Activity

Enter the Credentials and click on Login. This gives the error: "IO Error: The Network Adapter could not establish connection"

Database target status shows as UP and the "Test Connection" works always from "Monitoring Configuration" page.


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