Using Oracle JDeveloper on Linux the Test Connection Database Wizard Throws "Test failed: The Network Adapter could not establish the connection"
Last updated on JANUARY 09, 2018
Applies to:Oracle JDeveloper - Version 10.1.3.1.0 to 18.104.22.168.0 [Release Oracle10g to Oracle11g]
Information in this document applies to any platform.
The issue happens using Oracle JDeveloper on a Linux machine.
When testing a database connection to a previously created database in another machine, the following error message is thrown:
"Test failed: The Network Adapter could not establish the connection"
This error typically happens when you have no connectivity with the remote machine where the database is located, but in this case the connection can be established using a telnet to the database listener port.
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