如何連接Oracle 11g R1數據庫

Question

我正在嘗試使用Eclipse IDE將oracle數據庫與我的java程序連接，我已將JDBC驅動程序ojdbc6.jar添加到類路徑中。

正在使用：數據庫是： Oracle 11g r1企業版 。 操作系統： Windows 7 64bit 。 JDK版本： 1.7.0 。

我已經在瀏覽器中使用url作為“ localhost：1158”進行了測試，它會打開oracle登錄頁面，並且還成功使用用戶名和密碼作為“ SYSTEM”和“ 12345”登錄，在我的代碼中也是如此，但是在嘗試運行Java程序時一個例外。

我的用於測試數據庫連接的Java程序是：

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class Connect 
{
    public static void main(String[] args) {
        try {
            Class.forName("oracle.jdbc.OracleDriver");
            Connection con = DriverManager.getConnection("jdbc:oracle:thin:@//localhost:1158:v$instance","SYSTEM","12345");
            System.out.println("connected.."+con);
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}

例外情況是 ：

java.sql.SQLException: The Network Adapter could not establish the connection
    at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:70)
    at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:133)
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:199)
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:480)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:413)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:508)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:203)
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:33)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:510)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at abhishek.Connect.main(Connect.java:12)
Caused by: oracle.net.ns.NetException: The Network Adapter could not establish the connection
    at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:328)
    at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:421)
    at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:630)
    at oracle.net.ns.NSProtocol.connect(NSProtocol.java:206)
    at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:966)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:292)
    ... 7 more
Caused by: java.net.UnknownHostException: //localhost
    at java.net.AbstractPlainSocketImpl.connect(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 oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:127)
    at oracle.net.nt.ConnOption.connect(ConnOption.java:126)
    at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:306)
    ... 12 more

誰能告訴我我做錯了什么以及例外的含義。

Answer 1

端口1158用於DbConsole接口，不適用於JDBC。

JDBC應該連接到的Oracle偵聽器的默認端口是端口1521 。