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Oracle 10g Æô¶¯Óë¹Ø±Õ

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    ORACLE_BASE
    ORACLE_HOME °²×°¹ý³ÌÖÐÏÔʾµÄoracle home Ŀ¼
    ORACLE_SID
    PATH=$PAHT£º$ORACLE_HOME/bin
    ÒÔ oracle Õ˺ŵǽ Linux£¬»òÕß´Ó root ÏÂÊäÈë su - oracle ±ä³É oracle ÕʺÅÖ´ÐÐÆô¶¯¹Ø±ÕÃüÁî
    1. Æô¶¯ºÍ¹Ø±Õ¼àÌý
    Æô¶¯¼àÌý£ºlsnrctl start
    ¹Ø±Õ¼àÌý£ºlsnrctl stop
    2. Æô¶¯ºÍÍ£Ö¹Êý¾Ý¿â
    Æô¶¯Êý¾Ý¿â£ºÔÚÖÕ¶ËÊäÈë sqlplus '/ as sysdba' ½øÈë sqlplus£¬ÔÚ sqlplus ÊäÈë startup
    Í£Ö¹Êý¾Ý¿â£ºÔÚ sqlplus ÊäÈë shutdown »òÕß shutdown immediate
    3. Æô¶¯ºÍÍ£Ö¹ dbconsole ·þÎñ
    Æô¶¯Ç°Ðè×¢ÒâOracleµÄidÊÇ·ñÕýÈ·
    windowsÏÂÃüÁîΪset ORACLE_SID=TEST
    AIXÏÂÃüÁîΪexport ORACLE_SID=TEST
    Æô¶¯ dbconsole ·þÎñ£º emctl start dbconsole
    Í£Ö¹ dbconsole ·þÎñ£º emctl stop dbconsole
    4. Æô¶¯ºÍÍ£Ö¹ iSQL*Plus isqlplusctl start | stop
    5. ÁгöOracle½ø³Ì
    ps -fu oracle


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1.²é¿´Äĸö±í±»Ëø:
  select b.owner,b.object_name,l.session_id,l.locked_mode
  from v$locked_object l, dba_objects b
  where b.object_id=l.object_id;
2.²é¿´±»Ëø±íµÄsid ºÍserial# :
  select t2.username,t2.sid,t2.serial#,t2.logon_time
  from v$locked_object t1 ......

OracleÖеÄHash JoinÏé½â

OracleÖеÄHash JoinÏé½â
Ò»¡¢  hash join¸ÅÄî
     Hashjoin(HJ)ÊÇÒ»ÖÖÓÃÓÚequi-join£¨¶øanti-join¾ÍÊÇʹÓÃNOT INʱµÄjoin£©µÄ¼¼Êõ¡£
ÔÚOracleÖУ¬ËüÊÇ´Ó7.3¿ªÊ¼ÒýÈëµÄ£¬ÒÔ´úÌæsort-mergeºÍnested-loop join·½Ê½£¬
Ìá¸ßЧÂÊ¡£ÔÚCBO£¨hash joinÖ»ÓÐÔÚCBO²Å¿ÉÄܱ»Ê¹Óõ½£©Ä£Ê½Ï£¬ÓÅ»¯Æ÷¼ÆËã´ú ......

ÿÌì1µãÖ´ÐеÄoracle JOBÑùÀý


DECLARE
X NUMBER;
BEGIN
SYS.DBMS_JOB.SUBMIT
( job => X
,what => 'syn_rpt_members_relation;'
,next_date => to_date('02-07-2008 01:00:00','dd/mm/yyyy hh24:mi:ss')
,interval => 'trunc(sysdate)+1+1/24'
,no_parse => FALSE
);
SYS.DBMS_OUTPUT.PUT_LINE('Job Number is: ' || to_cha ......

Oracle job ¹ÜÀí

SVRMGR> select * from dba_jobs;
³õʼ»¯Ïà¹Ø²ÎÊýjob_queue_processes
alter system set job_queue_processes=39 scope=spfile;//×î´óÖµ²»Äܳ¬¹ý1000  ;job_queue_interval = 10  //µ÷¶È×÷ҵˢÐÂÆµÂÊÃëΪµ¥Î»
DBA_JOBS describes all jobs in the database.
USER_JOBS describes all jobs owned by the c ......

OracleϵÄÖÐÎÄÅÅÐò


alter session set nls_sort='schinese_pinyin_m';
select * from dept order by
nlssort(name,'NLS_SORT=SCHINESE_PINYIN_M');
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ÅÅÐò¹¦ÄÜ¡£ÉèÖÃNLS_SORTÖµ
SCHINESE_RADICAL_M °´ÕÕ²¿Ê×£¨µÚһ˳Ðò£©¡¢±Ê»®£¨µÚ¶þ˳Ðò£©Å ......
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