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28.2.4 °²×°Oracle 11g

28.2.4  °²×°Oracle 11g
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1¡¢pfile Îı¾Îļþ client¶Ë²ÎÊýÎļþ£»²»Äܶ¯Ì¬Ð޸ģ¬¿ÉÒÔÓÃÆÕͨµÄ±à¼­Æ÷Ð޸ģ¬ÐÞ¸ÄÖ®ºóÐèÒªÖØÆô¡£pfile¿ÉÄܻᵼÖ·þÎñÆ÷Æô¶¯²»Ò»Ö£¬ÒòΪ¿ÉÒÔÔÚ¿Í»§¶ËÆô¶¯¡£ 2¡¢spfile ¶þ½øÖÆÎļþ·þÎñÆ÷¶Ë²ÎÊýÎļþ£¬ÓÐÁËspfile£¬oracle¿ÉÒÔʵÏÖ¶¯Ì¬²ÎÊýÔÚÏßÐ޸ģ¬²¿·Ö²ÎÊýÐÞ¸ÄÖ®ºóÎÞÐèÖØÆô¡£µ«ÊÇ£¬ÒòΪÊǶþ½øÖÆÎļþ£¬ËùÒÔ²»ÄÜÓÃÆÕͨµÄ±à¼­ ......

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alter   table tb_test modify permile number(5,2);
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alter table tb_test add permile_temp number(5,2)
update tb_test set permile_temp=permile;
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µÚ28Õ Oracle·þÎñÆ÷ÅäÖú͹ÜÀí

µÚ28Õ  Oracle·þÎñÆ÷ÅäÖú͹ÜÀí
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28.1 Oracle 11g¼ò½é

28.1  Oracle 11g¼ò½é
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