Oracle Ö÷ÒªÅäÖÃÎļþ½éÉÜ£¨×ªÌû£©
Oracle Ö÷ÒªÅäÖÃÎļþ½éÉÜ£º
profileÎļþ£¬oratab Îļþ£¬Êý¾Ý¿âʵÀý³õʼ»¯Îļþ initSID.ora£¬¼àÌýÅäÖÃÎļþ£¬ sqlnet.ora Îļþ£¬tnsnames.ora Îļþ
1.2 Oracle Ö÷ÒªÅäÖÃÎļþ½éÉÜ
1.2.1 /etc/profile Îļþ
ϵͳ¼¶µÄ»·¾³±äÁ¿Ò»°ãÔÚ/etc/profile ÎļþÖж¨Òå ÔÚ CAMS ϵͳ ÓëÊý¾Ý¿â
Ïà¹ØµÄ»·¾³±äÁ¿¾Í¶¨ÒåÔÚ/etc/profile ÎļþÖÐ ÈçÏÂËùʾ
export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/8.1.7
export PATH=$PATHORACLE_HOME/bin
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/usr/lib
export ORACLE_SID=cams
export ORACLE_TERM=vt100
export ORA_NLS33=$ORACLE_HOME/ocommon/nls/admin/data
export NLS_LANG=AMERICAN.ZHS16CGB231280
& ˵Ã÷
1 ÅäÖÃÉÏÊö»·¾³±äÁ¿Òª×¢ÒⶨÒåµÄÏȺó˳Ðò Èç ¶¨Òå ORACLE_HOME
ʱ Óà µ½ ÁË ORACLE_BASE ÄÇ Ã´ ORACLE_HOME µÄ ¶¨ Òå Ó¦ ¸Ã ÔÚ
ORACLE_BASEÖ®ºó
2 ÔÚʹÓÃÖÐÎİæ CAMS ʱ »·¾³±äÁ¿ NLS_LANG µÄÖµÓ¦¸ÃÉèÖÃΪ
AMERICAN.ZHS16CGB231280 ÈçÉÏËùʾ 
Ïà¹ØÎĵµ£º
oracle±í¿Õ¼ä²Ù×÷Ïê½â
1
2
3×÷Õߣº À´Ô´£º ¸üÐÂÈÕÆÚ£º2006-01-04
5
6
7½¨Á¢±í¿Õ¼ä
8
9CREATE TABLESPACE data01
10DATAFILE '/ora ......
dualÊÇÒ»¸öÐéÄâ±í£¬ÓÃÀ´¹¹³ÉselectµÄÓï·¨¹æÔò£¬oracle±£Ö¤dualÀïÃæÓÀÔ¶Ö»ÓÐÒ»Ìõ¼Ç¼¡£ÎÒÃÇ¿ÉÒÔÓÃËüÀ´×öºÜ¶àÊÂÇ飬ÈçÏ£º
1¡¢²é¿´µ±Ç°Óû§£¬¿ÉÒÔÔÚ SQL PlusÖÐÖ´ÐÐÏÂÃæÓï¾ä select user from dual;
2¡¢ÓÃÀ´µ÷ÓÃϵͳº¯Êý
select to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') from dual;--»ñµÃµ±Ç°ÏµÍ³Ê±¼ ......
Oracle´´½¨±íʱ£¬³£Óöµ½ÏÈɾ³ýºó´´½¨µÄÇé¿ö£¬¶øËüÓÖûÓÐdrop table... if existsÓï·¨¡£Îª´Ë¿ÉÒÔʹÓÃuser_objectsÊý¾Ý×ÖµäºÍ¶¯Ì¬sqlÓï¾äʵÏÖÀàËÆµÄ¹¦ÄÜ£¬ÈçÏÂËùʾ£º
create or replace procedure proc_dropifexists(
p_table in varchar2
) is
v_count number(10);
begin
&nbs ......
ÈÝÒ×µÃ˵£¬¾¹ýdbms_random°üµ÷ÓÃËæ»úÊýµÄ²½Öè´óÌåÓÐ4ÖÖ£º
Ò»¡¢dbms_random.normal
Õâ¸öº¯Êý²»´ø²ÎÊý£¬»á»Øµ½normal distributionµÄÒ»¸önumberÃÅÀ֮࣬ËùÒÔ´óµÖËæ»úÊý»áÔÚ-Ò»µ½Ò»Æä¼ä¡£
¼òÂÔ²âÊÔÁËÒ»ÏÂ×Ó£¬·¢×÷100000´Î×î´óÄܵ½ÎåÉÏÏ£º
SQL> declare
¶þ i number:=Áã;
Èý j number:=Áã;
ËÄ begin
Îå for ......
СÒý
Oracle RdbmsÊ©ÓÃÁ˸÷ÖÖ²»Í¬ÀàÐ͵ÄËø¶¨»úÖÆ£¬latchµÈÓÚ´ËÖеÄÒ»ÖÖ£¬ÕýÎĽ«¼¯ÖÐÒý¼ûlatch(ãÅ)µÄ¸ÅÄ¶®µÃlatchµÄ¶ÒÏÖ²½Ö貢˵Ã÷»½ÆðlatchĦ²ÁµÄÔµ¹Ê¡£
ʲôÊÇlatch
LatchÊÇÓÃÀ´±£»¤SGAÇøÖй²ÏíÊý¾Ý½á¹¹µÄÒ»ÖÖ´®Ðл¯Ëø¶¨»úÖÆ¡£LatchµÄ¶ÒÏÖÊÇÓë²Ù×÷ϵͳÏà¸ÉµÄ£¬ÓÈÉõºÍÒ»¸ö¹ý³ÌÊDz»ÊÇØ½ÐèµÈºòÒ»¸ölatch¡¢¼±ÐèµÈº ......