我在同一个wifi网络中有两台笔记本电脑。
笔记本电脑A的IP地址为192.168.1.102 我已经在笔记本电脑A上安装了Oracle数据库。
我想从笔记本电脑B访问数据库。
我第一次尝试ping命令
然后我尝试使用以下代码从笔记本电脑B访问笔记本电脑A上安装的数据库,
package test.remote.server;
import java.sql.*;
import javax.swing.JOptionPane;
public class TestRemoteServer
{
public static void main(String args[])
{
try
{
String IPAddress="192.168.1.102";
Class.forName("oracle.jdbc.driver.OracleDriver");
System.out.println("Class Found !");
Connection con=DriverManager.getConnection("jdbc:oracle:thin:@"+IPAddress+":1521:XE","system","manager");
System.out.println("Connection Established !");
}
catch(Exception ex)
{
ex.printStackTrace();
}
}
}
如果我从笔记本电脑A(已安装数据库)运行此代码,则输出为
Class Found !
Connection Established !
当我在笔记本电脑B上运行相同的代码时,出现如下错误
Class found !
java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112) at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:414)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at test.remote.server.TestRemoteServer.main(TestRemoteServer.java:20)
如何从笔记本电脑B访问笔记本电脑A上安装的数据库?