Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

OracleÊý¾Ýµ¼³öµ½DBFµÄÎÊÌâ

 OracleÊý¾Ýµ¼³öºÜ¼òµ¥£¬µ«ÎªÁËÌá¸ßËÙ¶È£¬ÎÒÒ»°ã²»Ö±½Óµ¼³ö³ÉDBF£¬¶øÊÇÏȵ¼³ö³ÉCSV¸ñʽµÄÎı¾Îļþ¡£
½ñÌì¾ÍÓöµ½Ò»¸öÎÊÌ⣬µ¼³öµÄcsvÔÚת»»³Édbfʱ³öÏÖÁ˺ܶà¿ÕÐС£¾­¹ý²éÕÒÎÊÌ⣬·¢ÏÖÊÇ×Ö¶ÎÖк¬Óл»Ðзûµ¼Ö¡£
ʹÓÃ
select Replace(zsyj,chr(13)||chr(10),'')  as SXPD  from TableName
½â¾öÎÊÌâ¡£


Ïà¹ØÎĵµ£º

ÈçºÎ¿ª·¢ORACLE´æ´¢¹ý³Ì

 Ò». ¸ÅÊö
¡¡¡¡Oracle´æ´¢¹ý³Ì¿ª·¢µÄÒªµãÊÇ£º
¡¡¡¡• ʹÓÃNotepadÎı¾±à¼­Æ÷£¬ÓÃOracle PL/SQL±à³ÌÓïÑÔдһ¸ö´æ´¢¹ý³Ì;
¡¡¡¡• ÔÚOracleÊý¾Ý¿âÖд´½¨Ò»¸ö´æ´¢¹ý³Ì;
¡¡¡¡• ÔÚOracleÊý¾Ý¿âÖÐʹÓÃSQL*Plus¹¤¾ßÔËÐд洢¹ý³Ì;
¡¡¡¡• ÔÚOracleÊý¾Ý¿âÖÐÐ޸Ĵ洢¹ý³Ì;
¡¡¡¡• ͨ¹ý±àÒë´íÎóµ÷ÊÔ´æ´ ......

OracleÖØ×öÈÕÖ¾Îļþ³£ÓòÙ×÷

Ç¿ÖÆÇл»ÖØ×öÈÕÖ¾
ALTER SYSTEM SWITCH LOGFILE; Ç¿ÖÆ²úÉú¼ì²éµã
ALTER SYSTEM CHECKPOINT; ¼ä½Ó²úÉú¼ì²éµã(É趨ʵÀý»Ö¸´Ê±¼ä²»³¬¹ýmmÃë,Ò༴ִÐмì²éµãÖ®ºóÔËÐг¬¹ýÕâ¸öʱ¼ä¾ÍÔÙ´ÎÖ´Ðмì²éµã)
ALTER SYSTEM SET FAST_START_MTTR_TARGET = ÃëÊý; »ñÈ¡ÖØ×öÈÕÖ¾ÎļþÐÅÏ¢
SELECT group#, ......

oracle±í·ÖÇøÏê½â

http://tianzt.blog.51cto.com/459544/171759
 ´ËÎÄ´ÓÒÔϼ¸¸ö·½ÃæÀ´ÕûÀí¹ØÓÚ·ÖÇø±íµÄ¸ÅÄî¼°²Ù×÷:
        1.±í¿Õ¼ä¼°·ÖÇø±íµÄ¸ÅÄî
        2.±í·ÖÇøµÄ¾ßÌå×÷ÓÃ
        3.±í·ÖÇøµÄÓÅȱµã
 &nbs ......

Oracle 10g StatisticÊý¾Ýͳ¼Æ

http://www.ej38.com/showinfo/Oracle-108709.html
 Oracle 10g statisticÊý¾Ýͳ¼Æ,Oracle»á¸ù¾ÝÕâЩͳ¼ÆÐÅÏ¢À´¾ö¶¨ÊÇ×ßRBO(Rule-BasedOptimization)£¬»¹ÊÇ×ßCBO(Cost-BasedOptimization)£¬»áȥѡÔñÄÄÖÖÖ´Ðмƻ®¸ü»®Ëã,Ó°ÏìÊÇ·ñ×ßÏà¹ØµÄË÷ÒýµÈ.Èç¹ûÊÇCBOµÄ»°£¬ËüÒÀ¿¿×¼È·µÄ£¨»òÕß˵±È½Ï׼ȷµÄ£©Í³¼ÆÐÅÏ¢À´²úÉúÓÅ»¯µÄÖ ......

¹ØÓÚoracleµÄ±í¿Õ¼ä£¬·ÖÇø±í£¬ÒÔ¼°Ë÷ÒýµÄ×ܽá

 http://episode.javaeye.com/blog/183016
±í¿Õ¼ä£º 
OracleµÄUNDOTBS01.DBFÎļþÌ«´óµÄ½â¾ö°ì·¨ 
1¡¢.½ûÖ¹undo tablespace×Ô¶¯Ôö³¤ 
alter   database   datafile   'full_path\undotbs01.dbf'   autoextend   off; 
2.-- ´´½¨Ò»¸öеÄС ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ