Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

Oracle È¡µÃµ±Ìì0ʱ0·Ö0ÃëºÍ23ʱ59·Ö59Ãë

--È¡µÃµ±Ìì0ʱ0·Ö0Ãë
select TRUNC(SYSDATE) from dual;
--È¡µÃµ±Ìì23ʱ59·Ö59Ãë(ÔÚµ±Ìì0ʱ0·Ö0ÃëµÄ»ù´¡ÉϼÓ1ÌìºóÔÙ¼õ1Ãë)
SELECT TRUNC(SYSDATE)+1-1/86400 from dual;
--È¡µÃµ±Ç°ÈÕÆÚÊÇÒ»¸öÐÇÆÚÖеĵڼ¸Ìì,×¢Ò⣺ÐÇÆÚÈÕÊǵÚÒ»Ìì
select to_char(sysdate,'D'),to_char(sysdate,'DAY') from dual;
--ÔÚoracleÖÐÈçºÎµÃµ½µ±ÌìÔ·ݵĵÚÒ»ÌìºÍ×îºóÒ»Ìì
select to_char(sysdate,'yyyy-mm')||'-01' firstday,to_char(last_day(sysdate),'yyyy-mm-dd') lastday from dual
--ʵÏÖµ±Ìì16µãǰÊý¾Ý¼õÈ¥×òÌì16µãµÄ£¬¹ýÁË16µã¼õÈ¥½ñÌì16µã
select field1, field2 from mytable
where time = decode(sign(sysdate-trunc(sysdate)-16/24), --ʱ¼äÅжÏ
-1,trunc(sysdate)-1+16/24, --СÓÚ16µãÈ¡×òÌì16µã
trunc(sysdate)+16/24) --´óÓÚ16µãÈ¡µ±Ìì16µã
Ïà¹ØÔĶÁ£ºOracle ÖÐµÄ TO_DATE ºÍ TO_CHAR º¯Êý
.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }


Ïà¹ØÎĵµ£º

ÔÚOracleÊý¾Ý¿â´´½¨½Å±¾ÖÐÈçºÎ³õʼ»¯Ä³Ð©±í

Sample
±í¿Õ¼ä£ºIMPTEMP
±í£ºRoles ¡¢Users
ͨ¹ýPL/SQLµ¼³öµÄÊý¾Ý¿â½Å±¾
-----------------------------------------------------
-- Export file for user IMPTEMP                    --
-- Created by Administ ......

oracleÊÂÎñ´¦Àí

1.»ØÍËÊÂÎñ
×îºÃÉèÖÃÒ»¸ö±£´æµã£¬Àýsavepoint a,»òÕßÖ´ÐÐ exec dbms_transaction.savepoint('a')(Ö´ÐÐǰÐèÒªÖ´ÐÐset serveroutput onÓï¾ä)£»È¡Ïû²¿·ÖÊÂÎñ¾Í¿ÉÒÔʹÓÃrollback to a,»òÕßÖ´ÐÐexec dbms_transaction.rollback_savepoint('a');È¡ÏûÈ«²¿ÊÂÎñ¿ÉÒÔÖ´ÐÐrollback,»òÕßexec dbms_transaction.rollback;
2.Ö»¶ÁÊÂÎñ
......

²é¿´¡¢ÐÞ¸Äoracle×Ö·û¼¯£¬²é¿´oracle°æ±¾

1¡¢²é¿´Êý¾Ý¿â×Ö·û¼¯
Êý¾Ý¿â·þÎñÆ÷×Ö·û¼¯select * from nls_database_parameters£¬ÆäÀ´Ô´ÓÚprops$£¬ÊDZíʾÊý¾Ý¿âµÄ×Ö·û¼¯¡£
¡¡¡¡
¡¡¡¡¿Í»§¶Ë×Ö·û¼¯»·¾³select * from nls_instance_parameters,ÆäÀ´Ô´ÓÚv$parameter£¬
¡¡¡¡
¡¡¡¡±íʾ¿Í»§¶ËµÄ×Ö·û¼¯µÄÉèÖ㬿ÉÄÜÊDzÎÊýÎļþ£¬»·¾³±äÁ¿»òÕßÊÇ×¢²á±í
¡¡¡¡
¡¡¡¡»á»°×Ö·û¼¯» ......

Oracle ·ÖÒ³

<!-- 
@Name£º·ÖÀàͳ¼ÆÃ÷ϸ
@Time£º2010.01.05
@author JZP
--->
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%@ page language="java" import="wfc.service.database.DB"%>
<%@ page import="java.sql.Connection"%>
<%@ page import="java.sql.Resul ......

ORACLEÊý¾Ý¿â×Ô¶¯±¸·ÝÈÎÎñ

For win:
1¡¢Ð½¨Ò»¸öÅú´¦ÀíÎļþb.bat£¬¸ÃÎļþĿ¼ÏÂÒªÓÐexp.exeÎļþ
    Åú´¦ÀíÎļþÄÚÈÝ£º
  exp userid=user/passfile=i:\db%date:~0,10%.dmp log=i:\db%date:~0,10%.log
2¡¢Ð½¨ÈÎÎñ¹ØÁªb.batÎļþ¼´¿É¡£
For linux:
1¡¢Çе½oracleÓû§ÏÂн¨Ò»¸öÎļþ£¬Èçb.sh  £¬²¢¸³ÓÚ¿ÉÖ´ÐÐȨÏÞ c ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ