Java 1.6 + JDBC + Oracle, what is wrong?

Question

I Instaled the Oracle Enterprise 11.2, The Database Control Tool report me the following informations:
Status : Active
Instance name : orcl
Version: 11.2.0.1.0
Read only : Not
Oracle Home : C:\app\xxxx\product\11.2.0\dbhome_1
Host : localhost
Listener : LISTENER_localhost
Database Vault : not instaled
In my app java i add the ojodbc6.jar that i find on the directory where Oracle database was instaled.
My connection class
import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import org.apache.log4j.Logger; public class DataSourceDAO { private static Logger log = Logger.getLogger( DataSourceDAO.class ); protected Connection connection; private static final String OracleDriver = "oracle.jdbc.driver.OracleDriver"; private static final String OracleURL = "jdbc:oracle:thin:@localhost:1521:orcl"; private static final String OracleUSER = "SYSTEM"; private static final String OraclePASSWORD = "minhasenha"; public DataSourceDAO( ) { init( ); } private void init( ) { try { Class.forName( OracleDriver ); connection = DriverManager.getConnection( OracleURL, OracleUSER, OraclePASSWORD ); } catch ( Exception e ) { log.error( e ) ; throw new RuntimeException( " Impossivel localizar DataSource " ); } } public final void connect( ) throws SQLException { if ( connection == null ) { init( ); } } public final void close( ) throws SQLException { if ( connection != null ) { connection.close( ); } } public final void commit( ) { try { if ( connection != null ) { connection.commit( ); } } catch ( SQLException e ) { log.error( e ) ; throw new RuntimeException( "Impossivel comitar!", e ); } } public final void rollback( ) { try { if ( connection != null ) { connection.rollback( ); } } catch ( SQLException e ) { log.error( e ) ; throw new RuntimeException( "Impossivel desfazer!", e ); } } }
This code was workng in a pc with oracle 11g express editon, but with oracle Enterprise Edition the following erro happens:
Error:
012-06-11 02:46:03,590][enviar] ERROR br.com.ftt.view.TratarClienteVIEW ErroConnection refused: connect
java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at br.com.ftt.view.TratarClienteVIEW.enviar(TratarClienteVIEW.java:352)
at br.com.ftt.view.TratarClienteVIEW.inserir(TratarClienteVIEW.java:233)
at br.com.ftt.view.TratarClienteVIEW.access$0(TratarClienteVIEW.java:220)
at br.com.ftt.view.TratarClienteVIEW$1.widgetSelected(TratarClienteVIEW.java:140)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at br.com.ftt.view.TratarClienteVIEW.main(TratarClienteVIEW.java:59)
[2012-06-11 02:46:03,606][main] ERROR br.com.ftt.view.TratarClienteVIEW java.lang.NullPointerException

Answer 1

user9981176 wrote:
This code was workng in a pc with oracle 11g express editon, but with oracle Enterprise Edition the following erro happens:Expanding on the previous answer....because there is nothing wrong with the code.
The error indicates a box to box connection problem. Usual causes but others are possible.
1. Database isn't up (or listener isn't up)
2. Wrong port
3. Wrong host
4. Firewall issue.