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 1. ´´½¨±íblog_info, ¾ßÓÐIDºÍtitleÁ½¸ö×Ö¶Î, ÆäÖÐID½«ÉèÖÃΪ×Ô¶¯Ôö³¤ÁÐ;
 2. ´´½¨ÐòÁÐ:
    create sequence sq_blog_info
    start with 1
    increment by 1
    nomaxvalue
    nocycle
    cache 10;
 3. ´´½¨´¥·¢Æ÷:
    create or replace trigger tg_blog_info
       before insert on blog_info for each row
    begin
       select sq_blog_info.nextval into :NEW.id from dual; --¡ï×¢Òâ: ´Ë´¦µÄ;ÊDZØÐëµÄ
    end;
 4. ²âÊÔ:
    insert into blog_info (title) values('a');


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1.view ÏÞÖÆ
create or replace view my_view01
as select * from emp
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create synonym dept for scott.dept;
select * from dept;
3.sysdba ¹«¹²
drop synonym dept;
create public synonym dept for scott.dept;
desc dba_synonyms
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D:\>lsnrctl stop eygle
LSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 28-11ÔÂ-2007 10:02:40
Copyright (c) 1991, 2006, Oracle. All rights reserved.
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http://www.sysab.cn/a/db/oracle/2009/1020/2433.html
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1. ÔÚ´ò¿ªEnterprise Manager Consolʱ±¨´í: "ÕÒ²»µ½Ä¿±êÖ÷»ú";
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 ºÍʵ¼ÊµÄÖ÷»úÃû²»Ò»ÖÂ. ½â¾ö·½·¨ÈçÏÂ: 
 (1) Enterprise Manager Consol -> ¹¤¾ß²Ëµ¥ ->·þÎñ¹ÜÀí -> Oracle Net Manager;
 (2) ½«"±¾µØ ......
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