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 package cn.edu.bit.test;
import java.sql.*;
public class Jdbc {
 public static void main(String[] args)
 {
     try{ 
      Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
     System.out.println("×¢²á³É¹¦");    
     String URL = "jdbc:oracle:thin:localhost:1521:orcl";
      String user = "username";  //Á¬½ÓÊý¾Ý¿âµÄÓû§Ãû
      String password = "password";//Á¬½ÓÊý¾Ý¿âµÄÃÜÂë
      Connection conn = DriverManager.getConnection(URL, user, password); 
     System.out.println("Á¬½Ó³É¹¦"); 
      Statement st;
       st = conn.createStatement(); 
     ResultSet rs; 
       rs = st.executeQuery("select * from scott.project"); 
    while(rs.next()){ 
       System.out.println(rs.getString("time")); 
     } 
       }catch(Exception e)
     {     e.printStackTrace();    
    
     System.out.println("Á¬½Óʧ°Ü");    
   } 
      } 
}


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    SQL> select to_char(sysdate,dd-mm-yyyy day) from dual;
    TO_CHAR(SYSDATE,
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    trunc(date,fmt)°´ÕÕ¸ø³öµÄÒªÇó½«ÈÕÆÚ½Ø¶Ï,È ......

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select object_id,session_id,locked_mode from v$locked_object;
¡¡¡¡select t2.username,t2.sid,t2.serial#,t2.logon_time
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