Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

oracle ÈÕÆÚº¯Êý

sqlÓï¾äÈçÏÂ:
select * from userdb40.numservice  where ServiceNumber =88880068
 and applytime <= to_date('2009-12-26 10:41:44','yyyy-MM-dd HH24:mi:ss')
select to_date('2007-06-28 19:51:20.0','yyyy-MM-dd HH24:mi:ss') from dual;


Ïà¹ØÎĵµ£º

oracle ±í¿Õ¼ä²Ù×÷

oracle±í¿Õ¼ä²Ù×÷Ïê½â
  1
  2
  3×÷Õߣº   À´Ô´£º    ¸üÐÂÈÕÆÚ£º2006-01-04 
  5
  6 
  7½¨Á¢±í¿Õ¼ä
  8
  9CREATE TABLESPACE data01
 10DATAFILE '/ora ......

ÔÚJAVA Ô´³ÌÐòÖбàдSQLÓï¾äʱʹÓÃORACLE °ó¶¨±äÁ¿

ÔÚJAVAÖеÄSQL Óï¾äµÄ±àд·½Ã棬ûÓÐʹÓÃORACLE °ó¶¨±äÁ¿£¬ºÜ´ó³Ì¶ÈÉϽµµÍÁËÊý¾Ý¿âµÄÐÔÄÜ£¬±íÏÖÔÚÁ½¸ö·½Ã棺
 
1¡¢SQLÓï¾äÓ²·ÖÎö(Hard Parse)Ì«¶à£¬ÑÏÖØÏûºÄCPU×ÊÔ´£¬ÑÓ³¤ÁËSQLÓï¾ä×ܵÄÖ´ÐÐʱ¼ä
SQLÓï¾äµÄÖ´Ðйý³Ì·Ö¼¸¸ö²½Ö裺Óï·¨¼ì²é¡¢·ÖÎö¡¢Ö´ÐС¢·µ»Ø½á¹û¡£ÆäÖзÖÎöÓÖ·ÖΪӲ·ÖÎö(Hard Parse)ºÍÈí·ÖÎö(Soft Pars ......

OracleÈ«¾ÖÊý¾Ý¿âÃû¡¢»·¾³±äÁ¿ºÍsidµÄÇø±ð


http://www.haoxiai.net/shujuku/Oracle/111145.html
Ò»¡¢Êý¾Ý¿âÃû
ʲôÊÇÊý¾Ý¿âÃû
Êý¾Ý¿âÃû¾ÍÊÇÒ»¸öÊý¾Ý¿âµÄ±êʶ£¬¾ÍÏñÈ˵ÄÉí·ÝÖ¤ºÅÒ»Ñù¡£ËûÓòÎÊýDB_NAME±íʾ£¬Èç¹ûһ̨»úÆ÷ÉÏ×°Á˶àÈ«Êý¾Ý¿â£¬ÄÇôÿһ¸öÊý¾Ý¿â¶¼ÓÐÒ»¸öÊý¾Ý¿âÃû¡£ÔÚÊý¾Ý¿â°²×°»ò´´½¨Íê³ÉÖ®ºó£¬²ÎÊýDB_NAME±»Ð´Èë²ÎÊýÎļþÖ®ÖС£¸ñʽÈçÏ£º
DB_NAME=m ......

Oracle AQ ʹÓÃ

 Ëæ×Ų»Í¬Ó¦ÓÃÄ£¿é¼äµÄÏûÏ¢½»»¥ºÍͨÐųÉΪһ¸ö¹Ø¼üµÄ¹¦ÄÜ£¬²¢ÇÒ±äµÃÔ½À´Ô½ÖØÒª¡£OracleÒýÈëÁËÒ»ÖÖÇ¿´óµÄ¶ÓÁлúÖÆ£¬Í¨¹ýËü³ÌÐò¼ä¿ÉÒÔʵÏÖÐÅÏ¢µÄ½»»¥£¬oracle°ÑËü³Æ×÷ΪAQ - Advanced Queuing. ʹÓÃOracle AQ£¬ÎÒÃDz»ÐèÒª°²×°¶îÍâµÄÖмä¼þ£¬ËüÊÇOracleÊý¾Ý¿âµÄÒ»¸ö¹¦ÄÜ×é¼þ£¬Ö»ÒªÄã°²×°ÁËOracle Êý¾Ý¿â¾Í¿ÉÒÔʹÓÃAQÁË¡£½ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ