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       Conventional Insert Operations£º´«Í³²åÈë»áÓÅÏÈʹÓøßˮλ֮Ï£¬»á±£Ö¤Êý¾ÝÓ¦ÓÃÍêÕûÐÔ£º¸ßˮλ֮ÏÂÊÇÖ¸£ºÉ¾³ýÖ®ºóµÄÊ£Óà¿Õ¼ä£¬¸ßˮλ֮ÉÏÊÇÖ¸£º´ÓÀ´Ã»ÓÐÓùýµÄ´¦Å®¿é¡£
       Direct-path Insert Operations:Êý¾Ý²åÈë»áÀûÓøßˮλ֮ÉÏ£¬²»Óøßˮλ֮Ï¡£²ÉÓÃAppends×·¼Ó·½Ê½¡¢²»¾­¹ýBuffer Catch Õâ¸ö¹ý³Ì»á´ó´óÌá¸ßÐÔÄÜ¡£
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1 Serial Direct-path Insert £ºSingle proces Insert (Ó÷ÖÇø»òû·ÖÇø)Ò»¸ö½ø³Ì¡£²åÈë֮ǰÊDz»»áÓøßˮλ֮ϵĿ顣ËùÒÔ²åÈëÇ°Òªrebuild ±íʹ¸ßˮϵĿé½áÊø¿Õ״̬
2 Parallel Direct-path Insert£¨Ó÷ÖÇø£© £º¶à½ø³Ì²¢ÐвåÈë·ÖÇø±í¡£Ò»¸ö·ÖÇøÉÏ¿ÉÓöà¸ö½ø³Ì£¬µ«ÊÇÒ»¸ö½ø³Ì²»ÄܽøÈë¶à¸öÇø¡£ºÍ1ÖÖ·½Ê½Ò»Ñù¡¢
3 Parallel Direct-path Insert £¨·Ç·ÖÇø£©£º¶à½ø³Ì²¢ÐвåÈë·Ç·ÖÇø±í¡£Ã¿¸öÐèÒª¸É»îµÄ½ø³Ì»á·ÖÒ»¸öÁÙʱµÄsegment¡£×îºó»áÓÐÒ»¸öЭµ÷Õß½ø³Ì°ÑsegmentºÏ²¢Òƶ¯µ½primary table segment ÉÏ¡£
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1 £¨´®ÐУ© £ºinsert /*+Append*/ into temp nologging select * from all_objects;
/*+Append*/ :£¨´®ÐУ©¿é¿½±´Ö±½ÓʹÓøßˮλ¡£
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2 £¨²¢Ðк¬·ÖÇø£©£ºÄ¬ÈϾÍÊÇ/*+Append*/
   Alter sesion enable parallel DML;
   INSERT /*+Parallel £¨Óû§.±í, ·ÖÇøÊý£©*/  into ±í nologging select * from Ô´±í¡£
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¿ÉÒԸıäËùÔÚ±í¿Õ¼äµÄnologging¸Ä±äÆäϵıíµÄnologgingģʽ
set autot :¿ÉÒԲ鿴Statistics loggingÈÕÖ¾
²»¹ýÕâÑùnologgingÊÇûÓÐÓõġ£¿ÉÒÔʹÓÃalter table xxx nologging£»
ÔÚinsert /*+Append*/ into temp nologging select * from all_objects; ÊÇ»á²úÉúredo size·Ç³£µÄÉÙ¡¢


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OracleжÔØж²»¸É¾»£¬Oracle³¹µ×ɾ³ýµÄ°ì·¨(winxp)
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conn sys/sysem_pwd as sysdba;
£¨2£©´´½¨amlyÓû§
create user amly identified by 9imly;
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create tablespace ts_amly datafile 'd:\amlyfile\test.dbf' size 100M;
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alter user amly default tablespace ts_amly;
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grant create sess ......

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