I cant connect to my java application to oracle 11

Question

i am posting my question after alot of research and alot of google stuff .
i have an oracle 11g 11.1.0.6.0 that is installed on my Laptop all i am trying to do is to connect my java application to the database
i am geting this exception : java.sql.SQLRecoverableException: IO Error: The Network Adapter could not establish the connection .
the listener is giving me an error as i show below .
i cant telnet the port also 1521 .
i couldnt connect also through sql developer .
the microsoft windows firewall is off .
the code that i am using to connect :
Connection con=null ;
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
System.out.println("The driver has been loaded");
con=DriverManager.getConnection("jdbc:oracle:thin:@AMRO-PC:1521:XE", "aa" , "aa");
System.out.println("Connection was established");
catch (Exception e)
System.out.println(e.toString() );
}//catch
my tnsnames.ora is like this
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = Amro-PC)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
the full stacktrace :
java.sql.SQLRecoverableException: IO Error: The Network Adapter could not establish the connection
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:458)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:546)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:236)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:521)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at Main.main(Main.java:31)
Caused by: oracle.net.ns.NetException: The Network Adapter could not establish the connection
at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:392)
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:247)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1102)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:320)
... 7 more
Caused by: java.net.UnknownHostException: //localhost
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$1.lookupAllHostAddr(Unknown Source)
at java.net.InetAddress.getAddressesFromNameService(Unknown Source)
at java.net.InetAddress.getAllByName0(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
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:370)
... 12 more
the listener.ora
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:\oracle\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = D:\oracle\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = Amro-PC)(PORT = 1521))
DEFAULT_SERVICE_LISTENER = (XE)
it gives me an error when I try to start the listener through LSNCTRL that says :
Message 1070 not found; No message file for product=NETWORK, facility=TNSTNS-125
60: Message 12560 not found; No message file for product=NETWORK, facility=TNS
TNS-00530: Message 530 not found; No message file for product=NETWORK, facility
=TNS
And when I try to see the status of the Listener it says :
Message 1053 not found; No message file for product=NETWORK, facility=TNSTNS-125
41: Message 12541 not found; No message file for product=NETWORK, facility=TNS
TNS-12560: Message 12560 not found; No message file for product=NETWORK, facili
ty=TNS
TNS-00511: Message 511 not found; No message file for product=NETWORK, facilit
y=TNS
32-bit Windows Error: 61: Unknown error
So please can someone help me ?! Thanks in advance
Edited by: 913402 on Feb 9, 2012 12:10 AM

Answer 1

You put the machine name as the host name. I would put the (internal) network address of the laptop there and try again - and make sure that Oracle is actually listening on your internal network address in stead of only the localhost. Or are you running the java application on the same laptop? Then you can simply use 'localhost' as the host name.