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package DBbean;
import java.sql.*;
public class ConnBean
{
private Connection con;
//³õʼ»¯Á¬½Ó¡£
public ConnBean()
{
        
  try
  {
   Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
   String url="jdbc:oracle:thin:@localhost:1521:orcl";
         String user="scott";
         String password="tiger";
         con= DriverManager.getConnection(url,user,password);
  }
  catch (InstantiationException e)
  {
      e.printStackTrace();
  } catch (IllegalAccessException e)
  {
      e.printStackTrace();
  }
  catch(ClassNotFoundException e)
   {
    System.out.println("DRIVER NOT FOUND!");
    con=null;
   }
  catch(SQLException e)
   {
    con=null;
   }
    
}
//²éѯÊý¾Ý¿â
public  ResultSet getContact(String id)
{
  try
  {
   Statement stm=con.createStatement();
   ResultSet result=stm.executeQuery("select * from student where id='"+id+"'");
   return result;
  }
  catch(Exception e)
  {
  }
  return null;
}
}  


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oracle nvl decode

SELECT
DECODE(ÁÐ,0,'Q'1,'P',2,'O')¡¡AS ret
from dual
--·ÖÎö: µ± ÁÐ=0ʱ,½«"Q"¸³Öµ
--µ± ÁÐ =1ʱ,½«"P"¸³Öµ
--µ± ÁÐ=2ʱ,½«"O"¸³Öµ
--NVL()º¯Êý:
--NVL(ARG,VALUE)´ï±êÈç¹ûÇ°ÃæµÄARGֵΪNULLÄÇô·µ»ØµÄֵΪºóÃæµÄVALUE¶þÕß½áºÏʹÓÃ:
DECODE(NVL(±äÁ¿ ''),'','-','OK')
//·ÖÎö:
--Èô ±äÁ¿ ÊÇ·ñΪ¿Õ.ÈôΪ¿Õ¸³¸ø¿ ......

oracle PL SQLѧϰ°¸Àý£¨¶þ£©

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BEGIN
  UPDATE emp SET sal=sal+100 WHERE empno=1234;
  IF SQL%FOUND THEN
       DBMS_OUTPUT.PUT_LINE('³É¹¦Ð޸ĹÍÔ±¹¤×Ê£¡');
       ......

oracle grant

oracle grant
ÊÚȨÓï¾ä--select * from dba_users; ²éѯÊý¾Ý¿âÖеÄËùÓÐÓû§
--alter user TEST_SELECT account lock; Ëø×¡Óû§
--alter user TEST_SELECT account unlock; ¸øÓû§½âËø
--create user xujin identified by   xujin; ½¨Á¢Óû§
--grant create tablespace to xujin; ÊÚȨ
--grant select ......

LinuxÏÂÆô¶¯OracleÊý¾Ý¿â


[root@GISDB ~]$ su - oracle
[oracle@GISDB ~]$ sqlplus /nolog
SQL*Plus: Release 10.2.0.4.0 - Production on Tue Oct 13 11:03:03 2009
Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.
SQL> conn /as sysdba
Connected to an idle instance.
SQL> startup
ORACLE instance started.
To ......

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Õë¶ÔgetÌá½»·½Ê½¡¢ÂÒÂë½â¾ö·½Ê½
tomcat5ÖУ¬ÎªÁ˱£Ö¤getÊý¾Ý²ÉÓÃGBK±àÂ룬ÔÚserver.xmlÖнøÐÐÁËÈçÏÂÉèÖ㺸ıäwebÈÝÆ÷ÇëÇóÊý¾ÝµÄ±àÂë¸ñʽ(¶ÔpostÇëÇó·½Ê½ÎÞЧ)
    <Connector port="8080" maxHttpHeaderSize="8192"
            &nbs ......
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