IO Error: The Network Adapter Could Not Establish The Connection and java.net.UnknownHostException When Connection Using SCAN With Oracle JDBC Driver (Doc ID 1583883.1)

Last updated on MARCH 08, 2017

Applies to:

JDBC - Version 11.2.0.1 and later
Information in this document applies to any platform.

Symptoms

After following the instructions to test connectivity using SCAN with Oracle JDBC driver 11.2.0.3 to an 11g RAC database as per <document 1290193.1> Using SCAN With Oracle JDBC 11g Thin Driver, the following error is encountered:

java.sql.SQLRecoverableException: IO Error: The Network Adapter could not establish the connection
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:475)
at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:552)
at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:253)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:526)
at oracle.jdbc.pool.OracleDataSource.getPhysicalConnection(OracleDataSource.java:280)
at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:207)
at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:157)
at JDBCInfo.main(JDBCInfo.java:63)
Caused by: oracle.net.ns.NetException: The Network Adapter could not establish the connection
at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:439)
at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:434)
at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:687)
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:343)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1126)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:337)
... 8 more
Caused by: java.net.UnknownHostException: node-VIP
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:877)
at java.net.InetAddress.getAddressFromNameService(InetAddress.java:1230)
at java.net.InetAddress.getAllByName0(InetAddress.java:1181)
at java.net.InetAddress.getAllByName(InetAddress.java:1111)
at java.net.InetAddress.getAllByName(InetAddress.java:1047)
at oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:117)
at oracle.net.nt.ConnOption.connect(ConnOption.java:133)
at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:405)
... 13 more

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms