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

ORACLEÎóɾÊý¾ÝÎļþµ¼ÖÂORA

×Ô´ÓѧORACLEÒÔÀ´¾Í´ÓÀ´Ã»Óз¢Éú¹ýʲô¹ÊÕÏ£¬±È½ÏÐÒÔË¡£ÆäʵҲ²»ÄÜËãÐÒÔË£¬ÒòΪÕâÑù¾ÍÉÙÁ˶ÍÁ¶µÄ»ú»áÁË£¬ºÇºÇ£¬Ôõô¾õµÃ×Ô¼ºÓеãÇó۵ÄÇãÏò……
¼´±ãÊÇÔÚѧϰbackup and recovery basicsµÄʱºò£¬Ò²Ö»ÊÇ×ö×ö±¸·ÝµÄʵÑ飬û×ö¹ý»Ö¸´£¬ÒòΪÉí±ßûÓÐÈËÖ¸µ¼£¬Ò²Ã»ÆäËûͬѧÔÚѧORACLE£¬ËùÒÔÅÂÒ»³öÎÊÌâ¿Ï¶¨ºÜÂé·³£¬½â¾ö²»Á˾͵Ã֨װ£¬Ð¶ÔØÓÐʱºò»¹Ð¶²»¸É¾»£¬×ÜÖ®¾ÍÊÇÂé·³……
ºÃÁË£¬²»¶à˵ÁË£¬½ñÌìÔçÉÏÒ»¿ª»ú¾Í·¢ÏÖ¸ö´íÎó£¬ÏÂÃæ¼òµ¥ÃèÊöһϣ¬¾Íµ±×öÊǵÚÒ»´Î½â¾ö¹ÊÕϰɡ£
Microsoft Windows XP [°æ±¾ 5.1.2600]
(C) °æÈ¨ËùÓÐ 1985-2001 Microsoft Corp.
C:\Documents and Settings\Admin>sqlplus /nolog
SQL*Plus: Release 10.2.0.1.0 - Production on Fri Nov 13 09:18:43 2009
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
SQL> conn scott/tiger
ERROR:
ORA-01033: ORACLE æ­£å湪鍒濆鍖栨垨鍏³é棴
ÉÏÍø²éÁËÏÂ
ora-01033: oracle initialization or shutdown in progress
¹Ù·½Õë¶ÔORA-01033µÄ½âÊÍ»ù±¾ÉÏÊÇÈÃÓû§µÈ´ýÒ»¶Îʱ¼äºóÔٴεǽ£¬»ùÓÚÕâÖÖÅжÏÔÚÓÚORA-01033µÄ±¾ÖÊÊÇÓÉÓÚδÍêÈ«¼ÓÔØ¶øµ¼ÖµĽø³ÌæµËùÔì³ÉµÄ£¬ÕâÖÖÇé¿öµÄºÏÀí½âÊÍȷʵ¿ÉÒÔÊÇÈÃÓû§µÈ´ýµ½¼ÓÔØÍê±Ï¡£µ«ÊǶÔÓÚ´ËÖÖÎļþË𻵵IJ»¿ÉÄæµÄ²Ù×÷£¬Ò²¾Í´ú±í×ÅÓÀÔ¶²»¿ÉÄܵȵ½¼ÓÔØÍê±ÏµÄÄÇÒ»¿Ì£¬Òò´Ë£¬Óõȴý²¢²»Ò»¶¨Äܽâ¾ö¡£
¼ÈÈ»Ìáʾ˵Êdzõʼ»¯»ò¹Ø±Õ»¹ÔÚ½øÐÐÖУ¬ÎҾ͹رÕÊý¾Ý¿â£¬ÔÙÒ»²½²½´ò¿ª¿´±¨Ê²Ã´´í¡£
SQL> conn / as sysdba
Connected.
SQL> show user
USER is "SYS"
SQL> select * from dual;
ADDR           INDX    INST_ID D
-------- ---------- ---------- -
0366CD54          0          1 X             --ÕâÀï¿ÉÒÔ¿´³öDUAL±íÖÐÄÚÈݲ»Õý³£ÁË
SQL> shutdown normal;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.
Total System Global Area  176160768 bytes
Fixed Size    &nbs


Ïà¹ØÎĵµ£º

ORACLE ÕýÔò±í´ïʽ

¾ÍÊÇÓÉÆÕͨ×Ö·û£¨ÀýÈç×Ö·ûaµ½z£©ÒÔ¼°ÌØÊâ×Ö·û£¨³ÆÎªÔª×Ö·û£©×é³ÉµÄÎÄ×Öģʽ¡£¸ÃģʽÃèÊöÔÚ²éÕÒÎÄ×ÖÖ÷Ìåʱ´ýÆ¥ÅäµÄÒ»¸ö»ò¶à¸ö×Ö·û´®¡£ÕýÔò±í´ïʽ×÷Ϊһ¸öÄ£°å£¬½«Ä³¸ö×Ö·ûģʽÓëËùËÑË÷µÄ×Ö·û´®½øÐÐÆ¥Åä¡£
±¾ÎÄÏêϸµØÁгöÁËÄÜÔÚÕýÔò±í´ïʽÖÐʹÓã¬ÒÔÆ¥ÅäÎı¾µÄ¸÷ÖÖ×Ö·û¡£µ±ÄãÐèÒª½âÊÍÒ»¸öÏÖÓеÄÕýÔò±í´ïʽʱ£¬¿ÉÒÔ×÷Ϊһ¸ö¿ ......

oracleÊ÷½á¹¹²éѯ

 
connect by Êǽṹ»¯²éѯÖÐÓõ½µÄ£¬Æä»ù±¾Óï·¨ÊÇ£º
select ... from tablename start with Ìõ¼þ1
connect by Ìõ¼þ2
where Ìõ¼þ3;
Àý£º
select * from table
start with org_id = 'HBHqfWGWPy'
connect by prior org_id = parent_id;
 
¼òµ¥ËµÀ´Êǽ«Ò»¸öÊ÷×´½á¹¹´æ´¢ÔÚÒ»ÕűíÀ±ÈÈçÒ»¸ö±í ......

oracleÖÐin£¬not inºÍexists£¬not existsÖ®¼äµÄÇø±ð

 
 
         Ò»Ö±Ìýµ½µÄ¶¼ÊÇ˵¾¡Á¿ÓÃexists²»ÒªÓÃin£¬ÒòΪexistsÖ»ÅжϴæÔÚ¶øinÐèÒª¶Ô±ÈÖµ£¬ËùÒÔexists±È½Ï¿ì£¬µ«¿´ÁË¿´ÍøÉϵÄһЩ¶«Î÷²Å·¢ÏÖ¸ù±¾²»ÊÇÕâô»ØÊ¡£
ÏÂÃæÕâ¶ÎÊdz­µÄ
Select * from T1 where x in ( select y from T2 )
Ö´ÐеĹý³ÌÏ൱ÓÚ:
select * ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ