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3. ÈçºÎת»»init.oraµ½spfile?
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4. ½âÊÍdata block , extent ºÍ segmentµÄÇø±ð(ÕâÀィÒéÓÃÓ¢ÎÄÊõÓï)
½â´ð:data blockÊÇÊý¾Ý¿âÖÐ×îСµÄÂß¼´æ´¢µ¥Ôª¡£µ±Êý¾Ý¿âµÄ¶ÔÏóÐèÒª¸ü¶àµÄÎïÀí´æ´¢¿Õ¼äʱ£¬Á¬ÐøµÄdata block¾Í×é³ÉÁËextent . Ò»¸öÊý¾Ý¿â¶ÔÏóÓµÓеÄËùÓÐextents±»³ÆΪ¸Ã¶ÔÏóµÄsegment.
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2.DBMS_METADATA.GET_DDL °ü
6. ÔõÑù²é¿´Êý¾Ý¿âÒýÇæµÄ±¨´í
½â´ð:alert log.
7. ±È½ÏtruncateºÍdelete ÃüÁî
½â´ð:Á½Õ߶¼¿ÉÒÔÓÃÀ´É¾³ý±íÖÐËùÓеļǼ¡£Çø±ðÔÚÓÚ:truncateÊÇDDL²Ù×÷£¬ËüÒƶ¯HWK£¬²»ÐèÒª rollback segment .¶øDeleteÊÇDML²Ù×÷, ÐèÒªrollback segment ÇÒ»¨·Ñ½Ï³¤Ê±¼ä.
8. ʹÓÃË÷ÒýµÄÀíÓÉ
½â´ð:¿ìËÙ·ÃÎʱíÖеÄdata block
9. ¸ø³öÔÚSTAR SCHEMAÖеÄÁ½ÖÖ±í¼°ËüÃÇ·Ö±ðº¬ÓеÄÊý¾Ý
½â´ð:Fact tables ºÍdimension tables. fact table °üº¬´óÁ¿µÄÖ÷ÒªµÄÐÅÏ¢¶ø dimension tables ´æ·Å¶Ôfact table ijЩÊôÐÔÃèÊöµÄÐÅÏ¢
10. FACT TableÉÏÐèÒª½¨Á¢ºÎÖÖË÷Òý?
½â´ð:λͼË÷Òý (bitmap index)
11. ¸ø³öÁ½ÖÖÏà¹ØÔ¼Êø?
½â´ð:Ö÷¼üºÍÍâ¼ü
12. ÈçºÎÔÚ²»Ó°Ïì×Ó±íµÄÇ°ÌáÏ£¬Öؽ¨Ò»¸öĸ±í
½â´ð:×Ó±íµÄÍâ¼üÇ¿ÖÆʵЧ£¬Öؽ¨Ä¸±í£¬¼¤»îÍâ¼ü
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½â´ð:¹éµµÄ£Ê½ÊÇÖ¸Äã¿ÉÒÔ±¸·ÝËùÓеÄÊý¾Ý¿â transactions²¢»Ö¸´µ½ÈÎÒâÒ»¸öʱ¼äµã¡£·Ç¹éµµÄ£Ê½ÔòÏà·´£¬²»Äָܻ´µ½ÈÎÒâÒ»¸öʱ¼äµã¡£µ«ÊǷǹ鵵ģʽ¿ÉÒÔ´øÀ´Êý¾Ý¿âÐÔÄÜÉϵÄÉÙÐíÌá¸ß.
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½â´ð:Alter database backup control file to trace.
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