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ת:ORACLE ¶à±í¹ØÁª UPDATE Óï¾ä


ת:ORACLE
¶à±í¹ØÁª UPDATE Óï¾ä
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ÎñÊÜÀí×Óϵͳ
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  --¿Í»§×Ê
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  create table customers
   (
   customer_id   number(8)    not null,  -- ¿Í»§±êʾ
   city_name     varchar2(10) not null,  -- ËùÔÚ³ÇÊÐ
   customer_type char(2)      not null,  -- ¿Í»§ÀàÐÍ
 
   ...
   )
  create unique index PK_customers on customers
(customer_id)
   ÓÉÓÚijЩ
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  create table tmp_cust_city
   (
   customer_id    ......

OracleÊý¾Ý¿éË𻵻ָ´×ܽá(תÌû)

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¡¡¡¡select count(*) from tablename;
¡¡¡¡1¡¢Ã»Óб¸·ÝµÄÇé¿öÏ£º
¡¡¡¡1.1¡¢Ê¹ÓÃexp/imp»Ö¸´
¡¡¡¡ÔÚÕâÖÖÇé¿öÏ¿϶¨»áÔì³ÉÊý¾ÝµÄ¶ªÊ§£¬ÔÚÕâÖÖÇé¿öÏÂÓ¦²ÉÈ¡½«Êý¾Ýµ¼³öÈ»ºóÖؽ¨±íÔÙ½øÐе¼ÈëµÄ·½·¨£¬À´¾¡Á¿»Ö¸´Ëð»µÊý¾Ý¿éÖеÄÊý¾Ý£¬µ«ÊÇÔÚÓлµ¿éµÄÇé¿öÏÂ
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¡¡¡¡Exp test/test file=t.dmp tables=t;
¡¡¡¡µ¼³öÃüÁîÔÚÖ´ÐÐÖлᱨORA-01578´íÎó£¬ÔÚÕâ´íÎóÌáʾÖлáÌáʾÄǸöÎļþºÅµÄÎļþÒÔ¼°Õâ¸öÎļþÖеÄÄĸö¿é±»Ë𻵣¬È磺ORA—
01578£ºORACLE Êý¾Ý¿éË𻵣¨ÎļþºÅ 4£¬¿éºÅ 35£©
¡¡¡¡Õë¶ÔÒÔÉϵÄÌáʾÊ×ÏȲéѯÄÇЩ¶ÔÏó±»Ë𻵣º
¡¡¡¡Select tablespace_name,segment_type,owner,segment_name from
dba_extents Where file_id=4 and 35 between block_id and
block_id+blocks-1;
¡¡¡¡Èç¹û±»Ë𻵵ĿéÊÇË÷Òý£¬Í¨³£¿ÉÒÔͨ¹ýË÷ÒýÖؽ¨À´½â¾ö£¬Èç¹ûË𻵵ÄÊÇÊý¾Ý╯egment_typeΪtable£©£¬ÄÇôͨ¹ýÉèÖÃÈçÏÂÄÚ²¿Ê¼þʹµÃExp
²Ù×÷Ìø¹ý»µ¿é¡£
¡¡¡¡Alter session set events=’10231 trace name context forever,level 10’;
¡¡¡¡È»ºóÖØÐÂÖ´Ðе¼³öÃüÁµ¼³öÏà¹ØµÄ±í£¬È ......

OracleÖÐTO_DATE¸ñʽ ÀÁèÐÇ¿Õ

TO_DATE¸ñʽ(ÒÔʱ¼ä:2007-11-02   13:45:25ΪÀý)
Year:     
yy two digits Á½Î»Äê                ÏÔʾֵ:07
yyy three digits ÈýλÄê                ÏÔʾֵ:007
yyyy four digits ËÄλÄê                ÏÔʾֵ:2007
Month:     
mm    number     Á½Î»Ô              ÏÔʾֵ:11
mon    abbreviated ×Ö·û¼¯±íʾ          ÏÔʾֵ:11ÔÂ,ÈôÊÇÓ¢ÎÄ°æ,ÏÔʾnov    
month spelled out ×Ö·û¼¯±íʾ          ÏÔʾֵ:11ÔÂ,ÈôÊÇÓ¢ÎÄ°æ,ÏÔʾnovember
Day:     
dd    number&n ......

oracle_°Ù·Ö±È¼ÆËã

select round(sum(case when o.close_date is null then 1 else 0 end)/count(*),3)*100||'%'  SCALE from order o
˵Ã÷£ºÊ¹ÓÃsum¶ÔÒ»¶¨Ìõ¼þµÄÊý¾ÝÇóºÍºó£¬Óë×ÜÊý½øÐбȽϡ£
         ||'%' ÎªÒԵİٷֺÅÐÎʽÊä³ö½á¹û(Àý£º2%) ......

CentOS 5.2ÏÂOracle 10G °²×°Ïê½â

CentOS 5.2ÏÂOracle 10G °²×°Ïê½â
2009-01-16 14:38
CentOS ±ØÐèµÄ°²×°°ü
* GNOME Desktop Environment
* Editors
* Graphical Internet
* Text-based Internet
* Development Libraries
* Development Tools
* Legacy Software Development
* Server Configuration Tools
* Administration Tools
* Base
* Legacy Software Support
* System Tools
* X Window System
×¢Ò⣺ΪSWAP·ÖÅäµÄ¿Õ¼äÒª³¬¹ý1G£¬Òª²»È»ºóÃæ×°Oralce»áÒòΪ¿Õ¼ä²»×ã¶øÎÞ·¨°²×°¡£²¢ÇÒÒª¹Ø±Õ·À»ðǽ£¬¹Ø±ÕSELIINUX
ÐÞ¸ÄhostÎļþ
Hosts File
# vi /etc/hosts
192.168.10.10 oracle oracle.localdomain oracle
127.0.0.1 oracle localhost.localdomain localhost
×¢Ò⣺ÄãÒª°Ñ192.168.10.10¸Ä³ÉÄã×Ô¼ºµÄIP£¬ÎÒÕâÀïÖ»ÊÇдÎÒ±¾»úµÄIPµÄ¡£
ÉèÖÃÄں˲ÎÊý
# vi /etc/sysctl.conf
ÔÚÐÐÄ©Ìí¼ÓÒÔÏÂÄÚÈÝ
#use for oracle
#kernel.shmall = 2097152
#kernel.shmmax = 2147483648
kernel.shmmni = 4096
# semaphores: semmsl, semmns, semopm, semmni
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default=262144
n ......

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Linuxϵͳɾ³ýoracle 10g£¨°üÀ¨Èí¼þºÍʵÀý£©
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1¡¢oracleÓû§µÇ½sqlplusÍ£Ö¹Êý¾Ý¿â£ºshutdown
2¡¢oracleÓû§Í£Ö¹¼àÌý·þÎñ£ºlsnrctl stop£¨Èç¹û¼àÌý·þÎñÆô¶¯µÄ»°£©
3¡¢rootÓû§
 É¾³ý/tmpÏÂora*Îļþ
 É¾³ý/optÏÂOR*Îļþ
 É¾³ý/etcÏÂoraInst.locºÍoratabÎļþ
 £¨ÕâÁ½¸öÎļþÊÇ°²×°oracleʱִÐÐ$ORACLE_HOME/root.sh½Å±¾²úÉúµÄ£©
 É¾³ý/usr/local/binÏÂcoraenv¡¢dbhome¡¢oraenv
 £¨ÕâÈý¸öÎļþÊÇ°²×°oracleʱִÐÐ$ORACLE_BASE/oraInventory/orainstRoot.sh½Å±¾²úÉúµÄ£©
 É¾³ý$ORACLE_BASEÏÂadmin¡¢flash_recovery_area¡¢oradata¡¢oraInventory
 £¨¼ÇסÕâÀﲻҪɾ³ýoracleÓû§Ä¬ÈÏĿ¼£¬Ï´ÎÖØа²×°oracleÈí¼þʱ»¹ÒªÊ¹ÓÃoracleÓû§ÄØ£©
 Ìرð×¢ÒâµÄÊDz»ÒªÉ¾³ý$ORACLE_BASEÏÂoracleÓû§Ä¬ÈÏĿ¼£¬Ï´ÎÖØа²×°oracleÈí¼þʱ»¹ÒªÊ¹ÓÃoracleÓû§¡£
ɾ³ýoracleʵÀý£¬²»É¾³ýoracleÈí¼þ
1¡¢oracleÓû§Ö´ÐÐ$ORACLE_HOME/bin/dbca£¬É¾³ýʵÀý
2¡¢²é¿´$ORACLE_BASEĿ¼ÏÂadmin¡¢oradataĿ¼ÊÇ·ñ»¹´æÔÚÎļþ£¬Èç¹û´æÔÚrmÒ»ÏÂɾ³ý¼´¿É¡£È ......
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