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oracle link

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        1¡¢ÒѾ­ÅäÖñ¾µØ·þÎñ
        create public database
link fwq12 connect to fzept
identified by neu using 'fjept'       CREATE DATABASE LINKÊý¾Ý¿âÁ´½ÓÃûCONNECT TO Óû§Ãû IDENTIFIED BY ÃÜÂë USING ‘±¾µØÅäÖõÄÊý¾ÝµÄʵÀýÃû’;
     2¡¢Î´ÅäÖñ¾µØ·þÎñ
create database link linkfwq
  connect to fzept identified by neu
  using '(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.142.202.12)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = fjept)
    )
  )';
host£½Êý¾Ý¿âµÄipµØÖ·£¬service_name£½Êý¾Ý¿âµÄssid¡£
       ÆäʵÁ½ÖÖ·½·¨ÅäÖÃdblinkÊDz¶àµÄ£¬ÎÒ¸öÈ˸оõ»¹ÊǵڶþÖÖ·½·¨±È½ÏºÃ£¬ÕâÑù²»Êܱ¾µØ·þÎñµÄÓ°Ïì¡£
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       Êý¾Ý¿â²ÎÊýglobal_name=trueʱҪÇóÊý¾Ý¿âÁ´½ÓÃû³Æ¸úÔ¶¶ËÊý¾Ý¿âÃû³ÆÒ»Ñù
       Êý¾Ý¿âÈ«¾ÖÃû³Æ¿ÉÒÔÓÃÒÔÏÂÃüÁî²é³ö
       SELECT * from GLOBAL_NAME;
       ²éѯԶ¶ËÊý¾Ý¿âÀïµÄ±í
       SELECT …… from ±íÃû@Êý¾Ý¿âÁ´½ÓÃû;
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±äÁ¿2 DATE;
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where <Conditional-1>
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http://blog.itpub.net/post/468/12962
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