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

Oracle¸ü¸ÄÊý¾ÝÎļþλÖÃ


·½·¨Ò»£ºoffline±í¿Õ¼ä
1¡¢offline±í¿Õ¼ä£ºalter tablespace tablespace_name offline£»
2¡¢¸´ÖÆÊý¾ÝÎļþµ½ÐµÄĿ¼£»
3¡¢renameÐ޸ıí¿Õ¼ä£¬²¢Ð޸ĿØÖÆÎļþ£»
4¡¢online±í¿Õ¼ä£»
1¡¢offline±í¿Õ¼äzerone
SQL> select name from v$datafile;
NAME
--------------------------------------------------------------------------------
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSTEM01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\UNDOTBS01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSAUX01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\USERS01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\EXAMPLE01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ZERONE01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\RMANTS.DBF
ÒÑÑ¡Ôñ7ÐС£
SQL> alter tablespace zerone offline;
±í¿Õ¼äÒѸü¸Ä¡£
2¡¢¸´ÖÆÊý¾ÝÎļþµ½ÐµÄĿ¼
¸´ÖÆÊý¾ÝÎļþC:\ORACLE\PRODUCT\10.2.0\ORADATA\ZERONE01.DBFµ½C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\ZERONE01.DBF¡£
3¡¢renameÐ޸ıí¿Õ¼äÊý¾ÝÎļþΪеÄλÖ㬲¢Ð޸ĿØÖÆÎļþ
SQL> alter tablespace zerone rename datafile 'c:\oracle\product\10.2.0\oradata\zerone01.dbf' to 'c:\oracle\product\10.2.0\oradata\orcl\zerone01.dbf';
±í¿Õ¼äÒѸü¸Ä¡£
4¡¢online±í¿Õ¼ä
SQL> alter tablespace zerone online;
±í¿Õ¼äÒѸü¸Ä¡£
SQL> select name from v$datafile;
NAME
--------------------------------------------------------------------------------
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSTEM01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\UNDOTBS01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSAUX01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\USERS01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\EXAMPLE01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\ZERONE01.DBF
C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\RMANTS.DBF
ÒÑÑ¡Ôñ7ÐС£
SQL> select file_name,tablespace_name from dba_data_files where tablespace_name='ZERONE';
FILE_NAME             TABLESPACE_NAME
------------------------------------------------------------------------------------------------
ZERONE C:\OR


Ïà¹ØÎĵµ£º

oracle ÐÞ¸Ä×Ö¶ÎÀàÐ͵ķ½·¨

½ñÌ칫˾ÒòΪҵÎñÐèÒª,ÐÞÒªÐÞ¸Äij¸ö×Ö¶ÎÊý¾ÝÀàÐÍÓÐnumber(5),±äΪnumber(5,2)ÐÍ
ÒªÊÇûÓÐÊý¾ÝµÄ»°Ö±½ÓÓÃÒÔÏÂÓï¾ä¼´¿É
alter   table  tb_test  modify permile  number(5,2);
µ«ÊÇÓÐÊý¾ÝµÄ»° ¾Í²»ÄÜÓÃÉÏÃæ·½·¨ÁË,
alter table tb_test add permile_temp number(5,2)
update tb_test set  ......

ORACLE 11GR2 RAC new features ÐÂÌØÐÔ¡£

2009Äê9ÔÂOracle¹«Ë¾·¢²¼ÁËÆÚ´ýÒѾõÄOracle 11g R2£¬±¾ÏµÁÐÎÄÕ½«¸ø¶ÁÕßÒ»Ò»½Ò¿ªÐ°汾ÖеÄÐÂÌØÐÔ£¬²¢»á½éÉÜÆóÒµÈçºÎÀûÓÃÕâЩÐÂÌØÐÔ½«ÏÖÓеÄOracle 9i£¬10g£¬11g R1Éý¼¶µ½Oracle 11g R2.
¡¡¡¡¾­ÀúÁËÄÑÒÔÈÌÊܵij¤Ê±¼äµÈ´ý£¬Oracle¹«Ë¾Í»È»ÔÚ9ÔÂ1·¢²¼ÁËOracle 11g R2£¬ÎÒ²»µÃ²»³ÐÈÏOracleµÄ±£Ãܹ¤×÷×öµÃ¶àôºÃ£¬ÎÒÏàÐÅOracl ......

oracle SQLÐÔÄÜÓÅ»¯

ÎÒÃÇÒª×öµ½²»µ«»áдSQL,»¹Òª×öµ½Ð´³öÐÔÄÜÓÅÁ¼µÄSQL,ÒÔÏÂΪ±ÊÕßѧϰ¡¢ÕªÂ¼¡¢²¢»ã×ܲ¿·Ö×ÊÁÏÓë´ó¼Ò·ÖÏí£¡
£¨1£©      Ñ¡Ôñ×îÓÐЧÂʵıíÃû˳Ðò(Ö»ÔÚ»ùÓÚ¹æÔòµÄÓÅ»¯Æ÷ÖÐÓÐЧ)£º
ORACLEµÄ½âÎöÆ÷°´ÕÕ´ÓÓÒµ½×óµÄ˳Ðò´¦Àífrom×Ó¾äÖеıíÃû£¬from×Ó¾äÖÐдÔÚ×îºóµÄ±í(»ù´¡±í driving table)½«±»×îÏÈ´¦Àí£ ......

ÔÚhibernateÖÐʵÏÖoracleµÄÖ÷¼ü×ÔÔö²ßÂÔ

ת×Ô£ºhttp://blog.csdn.net/scorpio3k/archive/2009/05/09/4162079.aspx
 ÔںܶàÇé¿öÏ£¬ÎÒÃÇʹÓÃHibernateÔÚÒѾ­½¨Á¢ºÃÊý¾Ý¿âµÄ»ù´¡ÉÏ¡£ÔÚoracleÖУ¬Èç¹ûÒѾ­½¨Á¢ºÃµÄÊý¾Ý¿âÖÐʹÓÃÁËsequence
,Ôò¿ÉÒÔ°´ÕÕÏÂÃæµÄ²½Öè°ÑËüÒýÈëµ½HibernateÖУº
   
   1¡¢ÔÚoracle Ê×ÏÈ´´½¨sequence ......

Oracle ²»Ê¹ÓÃË÷Òý£¬Ë÷ÒýʧЧµÄ¼¸ÖÖÇé¿ö

1,<>
2,µ¥¶ÀµÄ>,<,(ÓÐʱ»áÓõ½£¬ÓÐʱ²»»á)
3,like "%_" °Ù·ÖºÅÔÚǰ.
4,±íû·ÖÎö.
5,µ¥¶ÀÒýÓø´ºÏË÷ÒýÀï·ÇµÚһλÖõÄË÷ÒýÁÐ.
6,×Ö·ûÐÍ×Ö¶ÎΪÊý×ÖʱÔÚwhereÌõ¼þÀï²»Ìí¼ÓÒýºÅ.
7,¶ÔË÷ÒýÁнøÐÐÔËËã.ÐèÒª½¨Á¢º¯ÊýË÷Òý.
8,not in ,not exist.
9,µ±±äÁ¿²ÉÓõÄÊÇtimes±äÁ¿£¬¶ø±íµÄ×ֶβÉÓõÄÊÇdate±äÁ¿Ê±.»òÏà· ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ