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

oracleÖÐDateÀàÐÍ×Ö¶ÎÊý¾Ý²åÈë¸ñʽ

   oracle±íÖÐÓÐDateÀàÐ͵Ä×ֶΣ¬ÓÃPD×Ô¶¯Éú³É²âÊÔÊý¾Ý£¬¸ñʽΪ‘yyyy-mm-dd’£¬¶øoracleÖвåÈëDateÀàÐ͵Ä×ֶθñʽΪ'dd-mmÔÂ-yyyy'¡£Èç¹ûÊý¾ÝÁ¿ÉÙ£¬¿ÉÒÔÓÃto_date()£¬
to_date('2008-01-25 12:39:49','YYYY-MM-DD HH24:MI:SS')
µ«ÊDzâÊÔÓÃÊý¾ÝÓÐ10ÍòÌõ£¬Èç¹ûÊܶ¯È¥Ð´ÏÔÈ»ÊDz»Êµ¼ÊµÄ¡£
ÏÖÔÚÕâ¸öÎÊÌâ½â¾öÁË¡£ÔÚ½¨±íÇ°ÔÚPL/SQLÖÐÊäÈë
alter session set nls_date_formate='yyyy-mm-dd';
¾Í¿ÉÒÔ¾ö¶¨²åÈëDATEÀàÐÍ×ֶεÄÊý¾ÝµÄ¸ñʽ£¬¶øÇÒ²»»áÓ°ÏìÆäËûÓû§¡£


Ïà¹ØÎĵµ£º

oracle¸´Ï°£¨Ò»£© Ö®OracleÌåϵ½á¹¹

      ѧϰOracle DBAÒ²°ë¸ö¶àѧÆÚÁË£¬½ñÌìÃÍÈ»²Å·¢ÏÖ£¬Ô­À´ÎÒµÄÊ黹ÊǺÜеģ¬ÉϿβÙ×÷ʱºòÒ²Ö»ÊÇÖªµÀ´ó¸ÅÔõô×ö£¬µ«ÊÇÒªÕæµÄÈ«²¿×Ô¼º×ö£¬¶ø²»È¥·­Ê黹ÊÇÓÐÒ»¶¨µÄÄѶȵģ¬ËùÒÔÄØ£¬½ñÌ쿪ʼ½«DBA´ÓÍ·¸´Ï°Ò»±é£¬Í¬Ê±ÔÙ²Ù×÷Ò»±é¡£
      µÚÒ»Õ£¬Ñ§µÄÊÇOracleµÄÌåϵ½á¹¹£ ......

ORACLE³õʼ»¯²ÎÊýÎļþÏêϸÎĵµ

1.¼ò½é
ÔÚ9i֮ǰ£¬²ÎÊýÎļþÖ»ÓÐÒ»ÖÖ£¬ËüÊÇÎı¾¸ñʽµÄ£¬³ÆΪpfile£¬ÔÚ9i¼°ÒÔºóµÄ°æ±¾ÖУ¬ÐÂÔöÁË·þÎñÆ÷²ÎÊýÎļþ,³ÆΪspfile,ËüÊǶþ½øÖƸñʽµÄ¡£ÕâÁ½ÖÖ²ÎÊýÎļþ¶¼ÊÇÓÃÀ´´æ´¢²Î ÊýÅäÖÃÒÔ¹©oracle¶ÁÈ¡µÄ£¬µ«Ò²Óв»Í¬µã£¬×¢ÒâÒÔϼ¸µã£º
1)pfileÊÇÎı¾Îļþ£¬spfileÊǶþ½øÖÆÎļþ£»
2) ¶ÔÓÚ²ÎÊýµÄÅäÖã¬pfile¿ÉÒÔÖ±½ÓÒÔÎı¾±à¼­Æ ......

oracle ÐÂÔöÓû§,ÉèÖÃȨÏÞ

ÿ¸öOracleÓû§¶¼ÓÐÒ»¸öÃû×ֺͿÚÁî,²¢ÓµÓÐһЩÓÉÆä´´½¨µÄ±í¡¢ÊÓͼºÍÆäËû×ÊÔ´¡£Oracle½ÇÉ«£¨role£©¾ÍÊÇÒ»×éȨÏÞ£¨privilege£©(»òÕßÊÇÿ¸öÓû§¸ù¾ÝÆä״̬ºÍÌõ¼þËùÐèµÄ·ÃÎÊÀàÐÍ)¡£Óû§¿ÉÒÔ¸ø½ÇÉ«ÊÚÓè»ò¸³ÓèÖ¸¶¨µÄȨÏÞ£¬È»ºó½«½ÇÉ«¸³¸øÏàÓ¦µÄÓû§¡£Ò»¸öÓû§Ò²¿ÉÒÔÖ±½Ó¸øÆäËûÓû§ÊÚȨ¡£
    Êý¾Ý¿âϵͳȨÏÞ£¨Dat ......

db2ºÍoracleÖеÄÊ÷²éѯ£¨µÝ¹é²éѯ£©Óï¾ä

ÔÚdb2ºÍoracleÖеĶÔÊ÷µÄµÝ¹é²éѯÓï¾ä¡£
±í½á¹¹£º
create table  MAIN_NODE (
MLA_ID               INTEGER     not null        ,   //½ÚµãID
MLA_ROOTID &nb ......

Oracle High Water Mask

High Water Mask£¨×î¸ßˮλÏߣ¬ºÇºÇ£©ÒÔϼò³ÆHWM
deleteÃüÁî²»Ó°Ïì±í×ÔÉíµÄHWM£¬¼´±íÖеÄÇø¿é»áËæ×ÅÊý¾ÝÁ¿µÄÔö´ó¶øÔö´ó£¬µ«É¾³ýÊý¾Ýʱ£¬
Çø¿é²¢²»»á¼õÉÙ£¬µ±²éѯʱ£¬»á°´ÕÕHWMµÄ±ê׼ȥɨÃè±í£¬¼´Ê¹Ê¹ÓÃdelete½«±íÊý¾ÝÇå¿Õ£¬²éѯʱ£¬
ÒÀ¾É»áɨÃèHWMµÄÇø¿é£¬²éѯËÙ¶ÈÒ²¾ÍºÍûʹÓÃdeleteÃüÁî֮ǰÊÇÒ»ÑùµÄ£¬¶øtruncate¿ÉÒÔ½ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ