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½ñÌìɾ³ýµÄ±í¿Õ¼ä°üº¬ÎﻯÊÓͼ±¨´í£¬ORA-23515: ʵÌ廯ÊÓͼºÍ/»òËüÃǵÄË÷Òý´æÔÚÓÚ±í¿Õ¼äÖÐ
¿´À´ÊÇÐèҪɾ³ýÎﻯÊÓͼ£¬Ö´ÐÐɾ³ý²Ù×÷£¬ÒòΪÊý¾ÝÌ«´óÁË£¬°ëÌìҲûŪÍ꣬ȡÏûÁË£¬ÉÏÍø²éÁíÍâÒ»ÖÖ·½·¨£¬É¾³ýÓû§£¬Ö¸¶¨cascade ²ÎÊý£¬ÕâÑù¾Í¿ÉÒÔÁË
ÎÒÊÔÁËһϸоõÓÃ
drop user user_name cascade;
ɾ³ýµÄ»¹ÊÇͦ¿ìµÄ£¬±Èɾ³ýÎﻯÊÓͼҪ¿ì
×ܽá ɾ³ý°üº¬ÎﻯÊÓͼµÄ±í¿Õ¼äµÄ·½·¨
1¡£ÏÈɾ³ýÎﻯÊÓͼµÄÓû§
drop user user_name cascade;
ÔÚɾ³ý±í¿Õ¼ä
drop tablespace tablespace_name INCLUDING CONTENTS and datafiles;
2.ÏÈɾ³ýÎﻯÊÓͼ£¬ÔÙɾ³ý±í¿Õ¼ä
DROP MATERIALIZED VIEW view_name;
ÔÙɾ³ý±í¿Õ¼ä
drop tablespace tablespace_name INCLUDING CONTENTS and datafiles;
Èç¹ûÊý¾ÝÁ¿Ð¡µÄ»°ÄǸö¶¼ÎÞËùν£¬Èç¹ûÊý¾ÝÁ¿±È½Ï´óµÄ»°½¨ÒéÓõÚÒ»ÖÖ·½·¨¡£
from:http://www.cnblogs.com/interboy/archive/2008/07/22/1248807.html


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OracleÊý¾Ý¿â


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¡¾×ª¡¿ Ïê½éoracleµÄRBO/CBOÓÅ»¯Æ÷

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OracleµÄÓÅ»¯Æ÷ÓÐÁ½ÖÖÓÅ»¯·½Ê½,¼´»ùÓÚ¹æÔòµÄÓÅ»¯·½Ê½(Rule-Based Optimization£¬¼ò³ÆΪRBO)ºÍ»ùÓÚ´ú¼ÛµÄÓÅ»¯·½Ê½(Cost-Based Optimization£¬¼ò³ÆΪCBO)£¬ÔÚOracle8¼°ÒÔºóµÄ°æ±¾,OracleÇ¿ÁÐÍƼöÓÃCBOµÄ·½Ê½
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oracleÊý¾Ý¿âͨ¹ýÃüÁîµÇ¼£¬Ö´ÐÐSQLÓï¾ä

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Oracle ¿ìÕÕ¼° dblinkʹÓà £¨Á½Ì¨·þÎñÆ÷Êý¾Ýͬ²½£©


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/*Ò»¡¢´´½¨dblink£º*/
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drop database link dblink_anson;
Create public
database link dblink_an ......

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    ÖÜÎåÍíÉÏ»»ÁË·þÎñÆ÷£¬ÖÜÒ»ÔçÉÏ·¢ÏÖ³¬ÉùµÄ¹¤×÷Õ ......
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