IO Error: The Network Adapter could not establish the connection When Connecting Using SCAN

(Doc ID 2318934.1)

Last updated on OCTOBER 23, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 and later
Information in this document applies to any platform.

Symptoms

JDBC connections via SCAN listener to a 2-node 11.2.0.4 RAC database fail with :
oracle.net.ns.NetException: The Network Adapter could not establish the connection

JDBC connections via either of the two node VIPs work successfully.


ERROR
-----------------------
IO Error: The Network Adapter could not establish the connection


Cause

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