Sql Server Á¬½ÓOracle µÄMSDTCÉèÖÃ
´ò¿ª“¹ÜÀí¹¤¾ß¨D¨D×é¼þ·þÎñ”£¬ÒÔ´Ë´ò¿ª“×é¼þ·þÎñ¨D¨D¼ÆËã»ú”£¬ÔÚ“ÎҵĵçÄÔ”Éϵã»÷ÓÒ¼ü¡£
ÔÚMSDTCÑ¡ÏÖУ¬µã»÷“°²È«ÅäÖÔ°´Å¥¡£
ÔÚ°²È«ÅäÖô°¿ÚÖÐ×öÈçÏÂÉèÖãº
Ñ¡ÖÐ“ÍøÂçDTC·ÃÎÊ”
ÔÚ¿Í»§¶Ë¹ÜÀíÖÐÑ¡ÖГÔÊÐíÔ¶³Ì¿Í»§¶Ë”“ÔÊÐíÔ¶³Ì¹ÜÀí”
ÔÚÊÂÎñ¹ÜÀíͨѶÖÐÑ¡“ÔÊÐíÈëÕ¾”“ÔÊÐí³öÕ¾”“²»ÒªÇó½øÐÐÑéÖ¤”
±£Ö¤DTCµÇ½ÕË»§Îª£ºNT Authority\NetworkService
ÏÂÃæÊÇÎҵĽØÍ¼
²»ÐпÉÒÔ³¢ÊÔ£ºÌí¼ÓWINDOWS×é¼þ--Ó¦ÓóÌÐò·þÆ÷--Ó¦ÓÃÍøÂçDTC·ÃÎÊ È»ºóÖØÆôÊÔÊÔ.
Ïà¹ØÎĵµ£º
1¡¢µÇ¼·½·¨:£ºsys or systemµÇ¼
Õ˺ţºsystem
ÃÜÂ룺system as sysdba---------¡·ÃÜÂë+as sysdba
conn system/password as sysdba
ʹÓÃÃüÁ
sql>alter user scott account unlock;
sql> commit;
Í ......
OracleµÄÓÅ»¯Æ÷ÓÐÁ½ÖÖÓÅ»¯·½Ê½(ÕûÀí), 2010-04-13
RBO·½Ê½£º»ùÓÚ¹æÔòµÄÓÅ»¯·½Ê½(Rule-Based Optimization£¬¼ò³ÆÎªRBO)
ÓÅ»¯Æ÷ÔÚ·ÖÎöSQLÓï¾äʱ,Ëù×ñѵÄÊÇOracleÄÚ²¿Ô¤¶¨µÄһЩ¹æÔò¡£±ÈÈçÎÒÃdz£¼ûµÄ£¬µ±Ò»¸öwhere×Ó¾äÖеÄÒ»ÁÐÓÐË÷Òýʱȥ×ßË÷Òý¡£
CBO·½Ê½£º»ùÓÚ´ú¼ÛµÄÓÅ»¯·½Ê½(Cost-Based Optimization£¬¼ò³ÆÎªCBO ......
ÔÚ×öÏîÄ¿¾³£Óöµ½·Ö¿ÆÊÒ¡¢ÈËÔ±½øÐлã×ܵÄÎÊÌ⣬ÔÚORACLEÖжԴËÀàÎÊÌâµÄ´¦ÀíÏ൱·½±ã£¡ÏÂÃæÒÔÏîÄ¿ÖÐÓöµ½µÄʵÀý½øÐÐ˵Ã÷£º
²éѯÓï¾äÈçÏ£º
select f_sys_getsectnamebysectid(a.sectionid) as sectname,
--a.sectionid,
f_sys_employin ......
ÔÚWeb¿ª·¢ÖУ¬´ÓÒ³Ãæ×¢ÈëµÄʱ¼äÒ»°ãΪStringÀàÐÍ£¬ÔõôȥºÍOracleÖеÄʱ¼ä½øÐбȽÏ
·½·¨£º
String Time£»
.......// Ò»¶Î´úÂë
¼ÙÉèTimeÎªÒ³Ãæ×¢ÈëStringÀàÐÍÊý¾Ý£¬Îª"2010-10-10 12:02:01"¡£
ÔÚдSQLÓ ......
ÍæOracleÒ²ÓÐ2ÄêµÄʱ¼äÁË£¬ ÁãÁãɢɢµÄÒ²ÕûÀíһЩ×ÊÁÏ¡£ ¶«Î÷Ò»¶àÁË£¬¾ÍÀí²»Çå³þ¡£ ËùÒÔ½áºÏÕÅÏþÃ÷µÄ¡¶´ó»°Oracle RAC¡·µÄһЩÄÚÈÝ£¬ºÍ×Ô¼ºÕûÀíµÄһЩ±Ê¼Ç£¬¶ÔOracle µÄ±¸·ÝºÍ»Ö¸´×öÁËÒ»¸öϵͳµÄÕûÀí¡£ Ò²ÊÇ×Ô¼º¶Ô֪ʶµÄÒ»¸ö¹®¹Ì°É¡£
Ò»£® ×¼±¸ÖªÊ¶
ÏÈÀ´¿´Ò»Ð©×¼±¸ÖªÊ¶£¬Á˽â ......