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     oracleʵÀýÆô¶¯Ê±¶ÁÈ¡pfile²ÎÊýÎļþ£¬ÐÞ¸Äpfile³õʼ»¯²ÎÊýÎļþºó£¬±ØÐëÖØÐÂÆô¶¯ÊµÀý²ÅÄÜÉúЧ¡£ 
     pfile²ÎÊýÎļþÓëspfile²ÎÊýÎļþ¶¼ÊÇÓÃÀ´´æ·Å³õʼ»¯²ÎÊýµÄÎïÀíÎļþ£¬pfileÒÔÎı¾ÎļþµÄÐÎʽ´æ´¢£¬ÓŵãÊÇÒ×Óڲ鿴ÓëÐ޸ģ»spfileÒÔ¶þ½øÖƵÄÐÎʽ´æ´¢£¬ËäÈ»ÄÜʵÏÖÒÔʵÀý²ÎÊýµÄ¶¯Ì¬Ð޸쬵«²»ÄÜÖ±½ÓÐ޸ģ¬Ö±½ÓÐ޸ĻáËð»µspfile²ÎÊýÎļþ£¬´Ó¶øÒýÆðʵÀýÆô¶¯Ê§°Ü¡£
     pfileÎļþµÄĬÈÏÃû³ÆÎª init<SID>.ora
     spfileÎļþµÄĬÈÏÃû³ÆÎª  spfile<SID>.ora
     Á©ÎļþµÄλÖÃÔÚ  <$oracle_home>/product/10.2.1/db_1/dbs/
     ³õʼ»¯²ÎÊýÎļþµÄÓÅÏȼ¶Îª spfile<sid>.ora   ---->  spfile.ora ---->  init<SID>.ora
     ¿ÉÒÔʹÓà show parameter spfile ²é¿´µ±Ç°¿´ÕýÔÚʹÓõijõʼ»¯²ÎÊýÎļþÊÇÄĸö
spfileÓëpfileµÄ»¥Ïàͬ²½
create pfile from spfile  »ò
create pfile = <pfilename> from spfile = <spfilename>
create spfile from pfile »ò
create spfile = <spfilename> from pfile = <pfilename>
Ö»ÄÜÔÚÊý¾Ý¿â¹Ø±ÕµÄÇé¿öϽøÐÐcreate spfile²Ù×÷£¬ÇÒÎļþÃû²»ÄÜÓëÕýÔÚʹÓõÄÊý¾Ý¿âµÄspfileÏàͬ£¬·ñÔò»á´´½¨Ê§°Ü¡£


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spring+hibernateÖд¦Àíoracle BLOB

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    1.1¡¢ÅäÖÃhibernateµÄ³Ö¾ÃÀàÎļþÖжÔÓ¦µÄ×Ö¶ÎΪbyte[]ÀàÐÍ
    2.2¡¢ÅäÖÃhibernateµÄÀàÓ³ÉäÎļþÖжÔÓ¦µÄ×Ö¶ÎtypeΪ 
            org.springframework.orm.hibernate3.support.BlobByteArray ......

oracleÖÐrownumµÄÓ÷¨

 
rownum ÕæµÄÊǺܺõĶ«Î÷£¬ÏÖÔÚ´ó¶àÊýÓÃÓÚ´æ´¢¹ý³Ì·ÖÒ³. µ«ÔõôÓÃÄØ£¿Õâ¾ÍÀ´Ñо¿Ò»Ï¡£ ºÙºÙ
--- ÒÔÏÂÎª×ªÔØÖ®´¦£¬½ö¹©Ñ§Ï°
¶ÔÓÚrownumÀ´ËµËüÊÇoracleϵͳ˳Ðò·ÖÅäΪ´Ó²éѯ·µ»ØµÄÐеıàºÅ£¬·µ»ØµÄµÚÒ»ÐзÖÅäµÄÊÇ1£¬µÚ¶þÐÐÊÇ2£¬ÒÀ´ËÀàÍÆ£¬Õâ¸öα×ֶοÉÒÔÓÃÓÚÏÞÖÆ²éѯ·µ»ØµÄ×ÜÐÐÊý£¬¶øÇÒrownum²»ÄÜÒÔÈκαíµÄà ......

oracle·ÖÒ³²éѯ

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SELECT * from
(
SELECT A.*, ROWNUM RN
from (SELECT * from TABLE_NAME) A
WHERE ROWNUM <= 40
)
WHERE RN >= 21
ÆäÖÐ×îÄÚ²ãµÄ²éѯSELECT * from TABLE_NAME±íʾ²»½øÐз­Ò³µÄԭʼ²éѯÓï¾ä¡£ROWNUM <= 40ºÍRN >= 21 ......

Oracle Job Óï·¨ºÍʱ¼ä¼ä¸ôµÄÉ趨

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alter system set job_queue_processes=39 scope=spfile;//×î´óÖµ²»Äܳ¬¹ý1000 ;job_queue_interval = 10 //µ÷¶È×÷ҵˢÐÂÆµÂÊÃëΪµ¥Î»
job_queue_process ±íʾoracleÄܹ»²¢·¢µÄjobµÄÊýÁ¿£¬¿ÉÒÔͨ¹ýÓï¾ä¡¡¡¡
show parameter job_queue_process;
À´²é¿´oracleÖÐjob_queue_processµÄÖµ¡ ......

hpux+slvm+mc/sg+oracle 10g racʵʩÊÖ²á

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Èí¼þ»·¾³:hpux 11.23,oracle 10g for hpux,oracle clusterware,mc/serviguard 11.18
1.°²×°HPUX
2.´ò²¹¶¡,²ÎÕÕÎĵµ¼´¿É,»ò´òµ½magepatch dec.12.07ÒÔºóÒ²¿ÉÒÔ
3.°²×°mc/sg+SGeRAC(hp MC/ServiceguardΪÅäºÏoracle racËùʹÓõÄÄ£¿é)
4.¹æ»®´æ´¢
lock vg:1G
rac:100G
5.ÐÞ¸ÄÄÚ ......
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