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ORACLE ÈçºÎ²úÉúÒ»¸öËæ»úÊý

ORACLE ÈçºÎ²úÉúÒ»¸öËæ»úÊý:DBMS_RANDOM
--1¡¢Ð¡Êý( 0 ~ 1)
     select dbms_random.value from dual ;
--2¡¢Ö¸¶¨·¶Î§ÄÚµÄСÊý ( 0 ~ 100 )
     select dbms_random.value(0,100) from dual ;
--3¡¢Ö¸¶¨·¶Î§ÄÚµÄÕûÊý ( 0 ~ 100 )
     select trunc(dbms_random.value(0,100)) from dual ;
--4¡¢³¤¶ÈΪ20µÄËæ»úÊý×Ö´®
     select substr(cast(dbms_random.value as varchar2(38)),0,10) from dual ;
--5¡¢Õý̬·Ö²¼µÄËæ»úÊý
     select dbms_random.normal from dual ;
--6¡¢Ëæ»ú×Ö·û´®
     select dbms_random.string('x', 3) from dual ;
     /* opt¿ÉȡֵÈçÏ£º
      'u','U'    :    ´óд×Öĸ
      'l','L'    :    Сд×Öĸ
      'a','A'    :    ´ó¡¢Ð¡Ð´×Öĸ
      'x','X'    :    Êý×Ö¡¢´óд×Öĸ
      'p','P'    :    ¿É´òÓ¡×Ö·û*/
--7¡¢Ëæ»úÈÕÆÚ
     select to_date(2454084+TRUNC(DBMS_RANDOM.VALUE(0,365)),'J') from dual ;
   /* ͨ¹ýÏÂÃæµÄÓï¾ä»ñµÃÖ¸¶¨ÈÕÆÚµÄ»ùÊý*/
     select to_char(sysdate,'J') from dual ;
--8¡¢Éú³ÉGUID
     select sys_guid() from dual ;
--Éú³É´ø·Ö¸ô·û(-)µÄGUIDµÄ×Ô¶¨Ò庯Êý
--create or replace function my_guid
return varchar2
is
    guid varchar(36);
    temp varchar(32);
begin
    temp:=sys_guid();
    guid:= substr(temp,1,8) || '-'
         ||substr(temp,9,4) || '-'
         ||substr(temp,13,4)|| '-'
         ||substr(temp,17,4)|| '-'
         ||substr(temp,21,12)


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oracle IMP ÃüÁîÏê½â


Ô­ÎĵØÖ·£ºhttp://www.bokee.net/bloggermodule/blog_viewblog.do?id=465310
OracleµÄµ¼ÈëʵÓóÌÐò(Import utility)ÔÊÐí´ÓÊý¾Ý¿âÌáÈ¡Êý¾Ý£¬²¢ÇÒ½«Êý¾ÝдÈë²Ù×÷ϵͳÎļþ¡£impʹÓõĻù±¾¸ñʽ£ºimp[username[/password[@service]]]£¬ÒÔÏÂÀý¾Ùimp³£ÓÃÓ÷¨¡£
 
1. »ñÈ¡°ïÖú
imp help=y
2. µ¼ÈëÒ»¸öÍêÕûÊý¾Ý¿â
i ......

oracle JOB

ÿÌì1µãÖ´ÐеÄoracle JOBÑùÀý
DECLARE
X NUMBER;
BEGIN
SYS.DBMS_JOB.SUBMIT
( job => X,
what => 'ETL_RUN_D_Date;',
next_date => to_date('2009-08-26 01:00:00','yyyy-mm-dd hh24:mi:ss'),
interval => 'trunc(sysdate)+1+1/24',
no_parse => FALSE
);
SYS.DBMS_OUTPUT.PUT_LINE('Job Number ......

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dc-test2<oracle>sqlplus /nolog
SQL*Plus: Release 10.2.0.4.0 - Production on Thu Feb 25 19:23:35 2010
Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.
SQL> desc v$datafile;
SP2-0640: Not connected
SP2-0641: "DESCRIBE" requires connection to server
SQL> conn / a ......

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¿ÉÒÔÖ§³Ö¶àÖÖÓïÑÔ¼°×Ö·û¼ ......
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