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[Oracle 10g] ÉÁ»Ø»Ö¸´Çø (Flash Recovery Area)

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Oracle 10g ÓÐÒ»Ïîй¦ÄܳÆÎª:×Ô¶¯µÄ»ùÓÚ´ÅÅ̵ı¸·ÝÓë»Ö¸´( Automatic Disk-Based Backup and Recovery )¡£ÊµÏָù¦ÄܵĻù´¡Îª±¾ÎÄÒª½²ÊöµÄÉÁ»Ø»Ö¸´Çø( Flash Recovery Area )¡£ÉÁ»Ø»Ö¸´ÇøÊÇ Oracle 10g ÖеÄÐÂÊÂÎï¡£¼òµ¥µÄ˵£¬ÉÁ»Ø»Ö¸´ÇøÊÇÒ»¿éÓÃÒÔ´æ´¢»Ö¸´Ïà¹ØµÄÎļþµÄ´æ´¢¿Õ¼ä¡£ÔÊÐíÓû§¼¯Öд洢ËùÓлָ ......

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oracleÓÅ»¯Æ÷

What circumstances we use ALL_ROWS and what circumstances we use FIRST_ROWS optimizer mode? This article is written in oracle9i.
First_rows attempts to optimize the query to get the very first row back to the client as fast as possible. This is good for an interactive client server environment wher ......

Oracle DBAʵս°à


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