SQL Developer Throws "The Network Adapter Could Not Establish The Connection" at Windows Operating System When Connecting Against A RAC Database (Doc ID 1539731.1)

Last updated on AUGUST 28, 2017

Applies to:

Oracle SQL Developer - Version 3.2 and later
Information in this document applies to any platform.

Symptoms

Environment
-------------------
Sql Developer 3.2.2
JDK 1.6.x
Rdbms RAC 11.2 ( release 2 )

Problem
------------
When making a connection to the database, the following error occurs intermittently

Error
-------
oracle.javatools.db.DBException: java.sql.SQLException: Exception d'E/S: The Network Adapter could not establish the connection
  at oracle.jdevimpl.db.adapter.CADatabaseFactory.createConnectionImpl(CADatabaseFactory.java:66)
  at oracle.javatools.db.DatabaseFactory.createConnection(DatabaseFactory.java:534)
  at oracle.javatools.db.DatabaseFactory.createDatabase(DatabaseFactory.java:208)
  at oracle.jdeveloper.db.DatabaseConnections.getDatabase(DatabaseConnections.java:607)
  at oracle.jdeveloper.db.DatabaseConnections.getDatabase(DatabaseConnections.java:562)
  at oracle.dbtools.raptor.utils.Connections$ConnectionInfo.getDatabase(Connections.java:149)
  at oracle.dbtools.raptor.utils.Connections.getConnection(Connections.java:896)
  at oracle.dbtools.raptor.utils.Connections.getConnection(Connections.java:877)
  at oracle.dbtools.raptor.connections.ConnectionDialog$8$1.run(ConnectionDialog.java:461)
  at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
  at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
  at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
  at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
  at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
  at java

What works
------------------
Once in the 4 times, the connection works fine



Cause

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