java将oracle一个表的数据同步到另一个数据库的表（转载）

Java代码  

import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;


 public class Bak {

     public static String shengchanku = "aaa";//生产库登录名
     public static String shengchanku_pw = "1";//生产库密码
     public static String shengchanku_serviceName = "127.0.0.1";//生产库服务名

     public static String ceshiku = "aaatest";//测试库登录名
     public static String ceshiku_pw = "1";//测试库密码
     public static String ceshiku_serviceName = "127.0.0.1";//测试库服务名

     /**
     * @param args
     * @throws SQLException
     */
     public static void main(String[] args){
         Date d = new Date();
         long start = d.getTime();
         String msg = "";
         Connection conn = null;
         try {
            conn = getConnection();
         } catch (Exception e1) {
             msg = "获取生产库链接失败";
        }
         Connection connTest = null;
         try {
            connTest = getTestConnection();
         } catch (Exception e1) {
             msg = "获取测试库链接失败";
        }
         if("".equals(msg)){
             try {
                 //开启事务
                 conn.setAutoCommit(false);

                 //查询出生产库所有表的名称
                 List list_table_names = new ArrayList();
                Statement stmt = conn.createStatement();
                 ResultSet rs = stmt.executeQuery("select table_name from user_tables");
                 while(rs.next()){
                     list_table_names.add(rs.getString(1));
                }
                rs.close();
                stmt.close();

                 //查询测试库所有表的名称
                 List list_table_names_test = new ArrayList();
                stmt = connTest.createStatement();
                 rs = stmt.executeQuery("select table_name from user_tables");
                 while(rs.next()){
                     list_table_names_test.add(rs.getString(1));
                }

                 //拼接往测试库每个表插数据的sql
                 String table_name = "";
                 List sql_create = new ArrayList();
                 for(int i =0;i
                    table_name = list_table_names.get(i);
                     sql_create.add("create table "+ceshiku+"."+table_name+" AS SELECT * FROM "+shengchanku+"."+table_name+"");
                }

                 //拼接删除测试库表的sql
                 List sql_drop = new ArrayList();
                 for(int i =0;i
                    table_name = list_table_names_test.get(i);
                     sql_drop.add("drop table "+ceshiku+"." + table_name);
                }

                 //删除测试库的数据
                stmt = conn.createStatement();
                 for(int i = 0 ;i
                    stmt.addBatch(sql_drop.get(i));
                }

                 //执行删除sql
                 int[] result = stmt.executeBatch();
                 System.out.println("执行删除表：" + result.length);
                stmt.close();

                 //重新创建测试库的数据
                stmt = connTest.createStatement();
                 for(int i = 0 ;i
                    stmt.addBatch(sql_create.get(i));
                }

                 //执行创建sql
                result = stmt.executeBatch();
                 System.out.println("执行创建表：" + result.length);
                stmt.close();

                 //提交事务
                 conn.setAutoCommit(true);
             } catch (SQLException e) {
                e.printStackTrace();
             }finally{
                 try {
                    conn.close();
                    connTest.close();
                 } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
         }else{
            System.out.println(msg);
        }

         d = new Date();
         long end = d.getTime();

         System.out.println("执行时间：" + (end-start) + "毫秒");
    }

     //获取生产库链接
     public static Connection getConnection() throws Exception{
         Connection ct = null;
         Class.forName("oracle.jdbc.driver.OracleDriver");
         ct = DriverManager.getConnection("jdbc:oracle:thin:"+shengchanku+"/"+shengchanku_pw+"@"+shengchanku_serviceName+":1521:orcl");
         return ct;
    }

     //获取测试库链接
     public static Connection getTestConnection() throws Exception{
         Connection ct = null;
         Class.forName("oracle.jdbc.driver.OracleDriver");
         ct = DriverManager.getConnection("jdbc:oracle:thin:"+ceshiku+"/"+ceshiku_pw+"@"+ceshiku_serviceName+":1521:orcl");
         return ct;
    }

}
如果是我实现的话，我会选择用存储过程来写，用dblink 获取正式库的数据，插入到测试库的表