Question

我正在编写一个可以更新另一台服务器上的一个数据库表的程序。假设我的程序在服务器192.168.195.103上，从这里我试图连接到数据库服务器IP 54.246.193.86和端口号1521.所以在这里我很震惊，请帮助我这些人。但我在下面标记为

的第13行收到错误

Exception in thread "main" java.sql.SQLException: Io exception: The Network Adap
ter could not establish the connection
        at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:189)
        at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:231)
        at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:345)
        at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:428)
        at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.ja
va:515)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:345)
        at java.sql.DriverManager.getConnection(Unknown Source)
        at java.sql.DriverManager.getConnection(Unknown Source)
        at Conn.main(Conn.java:13)




import java.sql.*;
import java.io.*;
class Conn {
  public static void main (String[] args) throws Exception
  {
System.out.println("hid");
  // Class.forName ("oracle.jdbc.driver.OracleDriver");


DriverManager.registerDriver( new oracle.jdbc.driver.OracleDriver());

System.out.println("hidd222");      
 **LINE13** --->>Connection conn = DriverManager.getConnection
   ("jdbc:oracle:thin:@54.246.193.86:1521:ROW0", "azglobal_users_prd", "catcat1");
                        // @//machineName:port/SID,   userid,  password

 //Connection conn = DriverManager.getConnection
   // ("jdbc:oracle:thin:@//54.246.193.86:1521/ROW0", "azglobal_users_prd", "catcat1");

System.out.println("hidd");   
try {
     Statement stmt = conn.createStatement();
     try {
    String s="France";
   String d="update ogl_table_status set status = 1 where mc_name='"+ s +"'";
System.out.println(d);
       //ResultSet rset = stmt.executeUpdate(d);
  stmt.executeUpdate(d);
       try {
         //while (rset.next())
          // System.out.println (rset.getString(1));   // Print col 1
       } 
       finally {
         // try { rset.close(); } catch (Exception ignore) {}
       }
     } 
     finally {
       try { stmt.close(); } catch (Exception ignore) {}
     }
   } 
   finally {
     try { conn.close(); } catch (Exception ignore) {}
   }
  }
}

Answer 1

您可能未将数据库服务器的AWS安全组配置为接受端口1521或IP地址上的连接。

只需从左侧菜单中选择EC2或RDS中的“安全组”（取决于您启动数据库的方式），找到您的安全组并进行相应更新。

无法在JAVA中将db表从一台服务器更新到另一台服务器

1 个答案: