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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,v$session t2
  where t1.session_id=t2.sid order by t2.logon_time;
3.Ö´ÐÐÏÂÃæµÄÓï¾ä:
  alter system kill session 'sid,serial#';


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oracle raw devices

1.LVM:
[root@vmfs ~]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sdg
  VG Name               db_v4
  PV Size  ......

linuxÉÏʹÓÃrlwrap ½â¾öoracle¿ÉÒÔÉÏϼü²é¿´ÃüÁî

linux ÉϵÄoracle sqlplus ²»ÄÜÀûÓà ÉÏ, Ï ¼üÀ´²é¿´ÃüÁËÑË÷µ½½â¾öÎÊÌâµÄ°ì·¨£¬ÕûÀíÈçÏÂ
°²×°Èí¼þrlwrap¿ÉÒÔ½â¾öÕâ¸öÎÊÌ⣬¸ÃÈí¼þÊÇÓÃcдµÄ³ÌÐò
¹Ù·½ÏÂÔØµØÖ·£ºhttp://utopia.knoware.nl/~hlub/uck/rlwrap/
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ÎÒÃÇÒ²¿ÉÒԲ鿴½âѹºóµÄtar°ü£¬²é¿´README°ïÖúÎļþ
shell>tar -zxvf rlwrap-0.36.tar.gz
sh ......

Oracle wait problems and potential solutions

Wait Problem Potential Fix Sequential Read Indicates many index reads—tune the code (especially joins) Scattered Read Indicates many full table scans—tune the code; cache small tables ......

oracleÁ¬½ÓÊý¾Ý¿â²âÊÔ´úÂë

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OracleÊý¾Ý¿âimpºÍexpµÄʹÓá¾×ª¡¿


1.µ¼ÈëÊý¾ÝÃüÁimp userid=fkprod/fkprod full=y file=xxx.dmp
2.µ¼³öÊý¾Ý¿â¶ÔÏóÃüÁ
ʹÓÃtools--->export user objectÖ»Äܵ¼³öÊý¾Ý±í½Å±¾²»ÄÜ´ø³öÊý¾Ý,
»òÕßʹÓÃexp user/pwd file=/dir/xxx.dmp log=xxx.log full=y commit=y ignore=y
×¢Ò⣺Èç¹ûÄãÒªÔ¶³ÌµÇ¼µ½Êý¾Ý¿â·þÎñÆ÷µ¼³ö£¬¿ÉÒÔÔÚ±¾µØSQLPLUS×öÈçÏÂÃüÁ ......
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