锘??xml version="1.0" encoding="utf-8" standalone="yes"?>亚洲AV无码一区二区二三区入口,99亚洲精品高清一二区,亚洲成a人片在线观看中文动漫http://www.tkk7.com/imdosop/category/50609.html榪樿寰楀勾灝戞椂鐨勬ⅵ鍚?/description>zh-cnThu, 12 Jan 2012 06:26:34 GMTThu, 12 Jan 2012 06:26:34 GMT60Oracle閿佹満鍒墮攣闂鐨勮緇嗗垎鏋?/title><link>http://www.tkk7.com/imdosop/archive/2008/11/07/239266.html</link><dc:creator>鏉遍牠bing闃塊牠</dc:creator><author>鏉遍牠bing闃塊牠</author><pubDate>Fri, 07 Nov 2008 07:40:00 GMT</pubDate><guid>http://www.tkk7.com/imdosop/archive/2008/11/07/239266.html</guid><wfw:comment>http://www.tkk7.com/imdosop/comments/239266.html</wfw:comment><comments>http://www.tkk7.com/imdosop/archive/2008/11/07/239266.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://www.tkk7.com/imdosop/comments/commentRss/239266.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/imdosop/services/trackbacks/239266.html</trackback:ping><description><![CDATA[鍦ㄤ換浣曞鐢ㄦ埛鏁版嵁搴撳簲鐢ㄤ腑,鏈緇堝繀鐒朵細鍑虹幇涓や釜鐢ㄦ埛甯屾湜鍚屾椂澶勭悊鐩稿悓璁板綍鐨勬儏鍐?榪欑鎯呭喌鍦ㄩ昏緫涓婃槸涓嶅彲鑳界殑,騫朵笖鏁版嵁搴撳繀欏葷‘淇濆叾鍦ㄧ墿鐞嗕笂涔熸槸涓嶅彲鑳界殑.浜嬪姟闅旂鎬у師鍒欒姹傛暟鎹簱淇濊瘉:鍦?,榪欎釜浼氳瘽鏃犳硶褰卞搷鍙︿竴涓細璇?騫朵笖鍚庤呬篃鏃犳硶鐪嬪埌鍓嶈?涓轟簡瀹炵幇榪欎釜瑕佹眰,鏁版嵁搴撳垱琛岃瘽騫跺彂鐨勬暟鎹闂?鐢氳嚦鍦ㄥ涓細璇濊姹傝闂浉鍚岀殑璁板綍鏃?鏁版嵁搴撲篃蹇呴』紜繚榪欎簺浼氳瘽鎺掗槦渚濇榪涜.<br /> 鍊熷姪浜庤褰曞拰琛ㄩ攣瀹氭満鍒?鎴戜滑鍙互瀹炵幇騫跺彂鐨勪覆琛屽寲.oracle鏁版嵁搴撲腑鐨勯攣瀹氭槸瀹屽叏鑷姩鐨?涓鑸岃█,鍙湁鍦ㄨ瘯鍥劇粨鍚堣蔣浠朵笌鑷姩閿佸畾鏈哄埗鏄垨鑰呯紪紼嬩漢鍛樼紪鍐欑殑浠g爜澶碂緋曟椂鎵嶄細寮曞彂鏌愪簺闂.<br /> <br /> <strong>鍏變韓閿佷笌鎺掍粬閿?br /> </strong> <p>Oracle鏁版嵁搴撲腑閿佸畾鐨勬爣鍑嗙駭鍒繚璇佷簡鏈澶у彲鑳界殑騫跺彂綰у埆涔熷氨鏄,濡傛灉鏌愪釜浼氳瘽姝e湪鏇存柊涓鏉¤褰?閭d箞鍙湁榪欐潯璁板綍浼氳閿佸畾.姝ゅ,閿佸畾榪欐潯璁板綍鏄負浜嗛槻姝㈠叾浠栦細璇濆鍏惰繘琛屾洿鏂?鍏朵粬浼氳瘽鍙互闅忔椂鎵ц璇誨彇鎿嶄綔.鍙湁鍦ㄤ嬌鐢╟ommit鎴杛ollback鍛戒護緇撴潫浜嬪姟涔嬪悗,閿佸畾鎵嶄細琚В闄?榪欑閿佸畾鏄竴涓?#8221;鎺掍粬閿?#8221;:鍦ㄦ寚瀹氳褰曚笂璇鋒眰鎺掍粬閿佺殑絎竴涓細璇濅細寰楀埌榪欎釜閿佸畾,鍏朵粬璇鋒眰瀵硅璁板綍榪涜鍐欒闂殑浼氳瘽鍒欏繀欏葷瓑寰?铏界劧榪欐潯璁板綍宸查氳繃閿佸畾浼氳瘽榪涜浜嗘洿鏂?浣嗘槸瀵瑰叾榪涜璇昏闂綘鏄鍏佽鐨?鑰屼笖緇忓父浼氬嚭鐜拌繖縐嶆儏鍐?,騫朵笖榪欎簺璇繪搷浣滀細娑夊強鎾ら攢鏁版嵁鐨勪嬌鐢?浠庤岀‘淇濋兘浼氬洖騫朵笉浼氱湅鍒頒換浣曟湭琚彁浜ょ殑鍙樺寲瀵逛簬涓鏉¤褰曟垨涓涓畬鏁磋〃涓婄殑涓涓帓浠栭攣鏉ヨ,姣忔鍙兘鏈変竴涓細璇濆彲浠ヨ幏寰楄繖涓帓浠栭攣,涓嶈繃璁稿浼氳瘽鍙互鍚屾椂鑾峰緱鐩稿悓瀵硅薄涓婄殑”鍏變韓閿?#8221;.鍦ㄤ竴鏉¤褰曚笂璁劇疆鍏變韓閿佹鏃犳剰涔?鍏跺師鍥犲湪浜庨攣瀹氫竴鏉¤褰曠殑鍞竴鐩殑灝辨槸涓嶅厑璁稿叾浠栦細璇濇洿鏀瑰畠.鍏變韓閿佽緗簬鏁翠釜琛ㄤ笂,鍚屾椂璁稿浼氳瘽鍙互鑾峰緱鍚屼竴涓〃涓婄殑鍏變韓閿?鍦ㄤ竴涓〃涓婃斁緗叡浜攣鐨勭洰鐨勬槸涓轟簡闃叉鍙︿竴涓細璇濊幏寰楄繖涓〃涓婄殑鎺掍粬閿?鍦ㄥ凡瀛樺湪鍏變韓閿佺殑鎯呭喌涓嬫棤娉曞啀鑾峰緱鎺掍粬閿?.鍦ㄨ〃涓婇槻姝㈡帓浠栭攣鏄渶瑕佹墽琛孌DL璇彞.濡傛灉鍏朵粬浠諱綍浼氳瘽宸茬粡鍦ㄤ竴涓〃涓婃斁緗簡鍏變韓閿?閭d箞鎴戜滑灝辨棤娉曟墽琛屼慨鏀規煇涓璞$殑璇彞(渚嬪鍒犻櫎榪欎釜琛ㄧ殑鏌愪竴鍒?.<br /> 涓轟簡鍦ㄨ褰曚笂鎵цDML璇彞,褰撳墠浼氳瘽蹇呴』鑾峰彇寰呮洿鏂拌褰曚笂鐨勬帓浠栭攣浠ュ強鍖呭惈榪欎簺璁板綍鐨勮〃涓婄殑鍏變韓閿?濡傛灉鍙︿竴涓細璇濆凡緇忚幏鍙栦簡寰呮洿鏂拌褰曚笂鐨勬帓浠栭攣,閭d箞褰撳墠浼氳瘽灝嗚鎸傝搗,鐩磋嚦浣跨敤COMMIT鎴朢OLLBACK鍛戒護瑙i櫎榪欎簺閿佸畾,濡傛灉鍙︿竴涓細璇濆凡緇忚幏鍙栦簡寰呬慨鏀硅褰曠殑琛ㄤ笂鐨勫叡浜攣浠ュ強鍏朵粬璁板綍涓婄殑鎺掍粬閿?閭d箞灝變笉瀛樺湪浠諱綍闂.涓涓〃涓婄殑鎺掍粬閿佷細閿佸畾榪欎釜琛?浣嗘槸,濡傛灉涓嶉渶瑕佹墽琛孌DL璇彞,閭d箞鎴戜滑灝卞彲浠ヤ笉閿佸畾鏁翠釜琛ㄧ殑榛樿閿佸畾鏈哄埗.<br />  <br /> 鎻愮ず:鍙湁鍦ㄧ壒鍒姹傚茍涓旂紪紼嬩漢鍛樺叿鏈夊厖鍒嗙悊鐢辯殑鎯呭喌涓?鎵嶅彲浠ヨ姹傚湪鏁翠釜琛ㄤ笂鏀劇疆鎺掍粬閿?<br /> <br /> <strong>DML閿佷笌DDL閿?/strong><br /> 鎵鏈塂ML璇彞閮借嚦灝戦渶瑕佷袱縐嶉攣瀹?鍙楀獎鍝嶈褰曚笂鐨勬帓浠栭攣,浠ュ強鍖呭惈鍙楀獎鍝嶈褰曠殑琛ㄤ笂鐨勫叡浜攣.鎺掍粬閿佽兘澶熼槻姝㈠叾浠栦細璇濆共棰勬寚瀹氱殑璁板綍,鑰屽叡浜攣鍒欒兘澶熼樆姝㈠叾浠栦細璇濅嬌鐢―DL璇彞淇敼琛ㄧ殑瀹氫箟.榪欎袱縐嶉攣瀹氫細琚嚜鍔ㄨ姹?濡傛灉鏌愭潯DML璇彞鍦ㄦ寚瀹氳褰曚笂鏃犳硶鑾峰彇鎵闇鐨勬帓浠栭攣,閭d箞榪欐潯璇彞浼氳鎸傝搗鐩磋嚦鑾峰緱鎵闇鐨勬帓浠栭攣.<br /> 鎵цDDL鍛戒護闇瑕佷嬌鐢ㄦ墍娑夊強瀵硅薄涓婄殑鎺掍粬閿?鍙湁鍦ㄩ拡瀵規寚瀹氳〃鐨勬墍鏈塂ML浜嬪姟緇撴潫,騫朵笖璁板綍涓婄殑鎺掍粬閿佷互鍙婅〃涓婄殑鍏變韓閿侀兘琚В闄や箣鍚?鎴戜滑鎵嶅彲浠ヨ幏寰楁墽琛孌DL鍛戒護鎵闇鐨勬帓浠栭攣,浠諱綍DDL璇彞鎵闇鐨勬帓浠栭攣閮芥槸琚嚜鍔ㄨ姹傜殑.浣嗘槸,濡傛灉鏃犳硶鑾峰彇鎵闇鐨勬帓浠栭攣(閫氬父鏄洜涓哄叾浠栦細璇濆凡緇忚幏寰楃敤浜嶥ML璇彞鐨勫叡浜攣),閭d箞DDL璇彞灝變細鐢變簬閿欒绔嬪嵆緇堟.<br />  <br /> <strong>渚嬪瓙:</strong><br /> 1.       浣跨敤SQL*PLUS,浣滀負鐢ㄦ埛SYSTEM榪炴帴鏁版嵁搴?<br /> 2.       鍒涘緩涓涓〃,騫朵笖鍦ㄨ繖涓〃涓彃鍏ヤ竴鏉¤褰?<br /> >create table t1(c1 number);<br />        >insert into t1 values(1);<br />        >commit;<br /> 3.鍐嶆浣跨敤SQL*PLUS騫朵綔涓虹敤鎴稴YSTEM榪涜榪炴帴,浠庤屾墦寮鍙︿竴涓細璇?<br /> 4.鍦ㄧ涓涓細璇濅腑鎵ц涓涓狣ML鍛戒護,榪欎釜鍛戒護浼氬湪鎻掑叆鐨勮褰曚笂鏀劇疆涓涓帓浠栭攣,鍚屾椂榪樹細鍦ㄥ垱寤虹殑琛ㄤ笂鏀劇疆涓涓叡浜攣.<br />    >update table t1 set c1=2 where c1=1;<br /> 5.濡備笅鎵紺?鍦ㄧ浜屼釜浼氳瘽涓墽琛岀涓鏉¢拡瀵規柊寤鴻〃鐨凞DL璇彞.<br />    >alter table t1 add(c2 date);<br />    error at line 1:<br /> ora-00054:resource busy and acquire with nowait specified<br /> 鍥犱負DDL璇彞闇瑕佽〃涓婄殑鎺掍粬閿?鑰岃繖涓嶥ML璇彞宸插湪琛ㄤ笂鏀劇疆浜嗗叡浜攣鐩稿啿紿?鎵浠ヨ瘯鍥懼湪琛ㄤ腑鎻掑叆涓涓垪鐨勮繖鏉DL璇彞浼氬け璐?闇瑕佹敞鎰忕殑鏄?鍦ㄧ被浼兼儏鍐典笅,DML璇彞浼氱瓑寰呭茍涓嶆柇榪涜灝濊瘯,鐩磋嚦鑾峰緱鍏舵墍闇鐨勯攣(鎹㈠彞璇濊灝辨槸鎸傝搗);鑰孌DL璇彞鍒欎細鐢變簬閿欒绔嬪嵆緇堟.<br />        6.鍦ㄧ涓涓細璇濅腑,鎻愪氦褰撳墠浜嬪姟<br />           >commit;<br />        7.鍦ㄧ浜屼釜浼氳瘽涓?閲嶆柊鎵ц姝ラ5.姝ゆ椂,鍥犱負涓嶇函鍦ㄤ笌DDL鎺掍粬閿佺浉鍐茬獊鐨凞ML鍏變韓閿?鍥犳DDL璇彞灝嗘垚鍔熺殑鎵ц.<br />        8.鍦ㄧ涓涓細璇濅腑 ,閿佸畾鏁翠釜琛?<br />         >lock table t1 in exclusive mode;<br />        9.鍦ㄧ浜屼釜浼氳瘽涓?鎻掑叆涓鏉¤褰?姝ゆ椂,榪欎釜浼氳瘽灝嗚鎸傝搗.<br />         >insert into t1 values (1,sysdate);<br />        10.鍦ㄧ涓涓細璇濅腑,閫氳繃鎵цCOMMIT鍛戒護瑙i櫎鏁翠釜琛ㄤ笂鐨勯攣瀹?闇瑕佹敞鎰忕殑鏄?ROLLBACK鍛戒護涔熷彲浠ュ疄鐜扮浉鍚岀殑鐩殑.<br />         >commit;<br />        11.絎簩涓細璇濅細閲婃斁騫朵笖鐜板湪浼氬畬鎴愭彃鍏ユ搷浣?闅忓悗,鎵цCOMMIT鍛戒護,緇堟褰撳墠浜嬪姟鏂屼笖瑙i櫎璇ヨ褰曚笂鐨勬帓浠栭攣.</p> <p><strong>鍏充簬濡備綍瑙e喅姝婚攣鐨勯棶棰?</strong><br /> 錛?鏌ュ摢涓繃紼嬭閿?br /> 鏌$DB_OBJECT_CACHE瑙嗗浘:<br /> SELECT * FROM V$DB_OBJECT_CACHE WHERE OWNER=''榪囩▼鐨勬墍灞炵敤鎴?' AND LOCKS!=''0'';</p> <p>2. 鏌ユ槸鍝竴涓猄ID,閫氳繃SID鍙煡閬撴槸鍝釜SESSION.<br /> 鏌$ACCESS瑙嗗浘:<br /> SELECT * FROM V$ACCESS WHERE OWNER=''榪囩▼鐨勬墍灞炵敤鎴?' AND NAME=''鍒氭墠鏌ュ埌鐨勮繃紼嬪悕<br /> <br /> <em style="font-size: 10pt; color: #c0c0c0">鐗堟潈褰掑師浣滆呭拰鍚勫彂甯冪綉绔欐墍鏈夛紝姝ゆ枃绔犱粎渚涘涔犲弬鑰冧箣鐢?/em> <br /> </p> <img src ="http://www.tkk7.com/imdosop/aggbug/239266.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/imdosop/" target="_blank">鏉遍牠bing闃塊牠</a> 2008-11-07 15:40 <a href="http://www.tkk7.com/imdosop/archive/2008/11/07/239266.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>閿佺瓑寰呯殑璇婃柇鍙婃帓闄?/title><link>http://www.tkk7.com/imdosop/archive/2008/11/07/239225.html</link><dc:creator>鏉遍牠bing闃塊牠</dc:creator><author>鏉遍牠bing闃塊牠</author><pubDate>Fri, 07 Nov 2008 06:32:00 GMT</pubDate><guid>http://www.tkk7.com/imdosop/archive/2008/11/07/239225.html</guid><wfw:comment>http://www.tkk7.com/imdosop/comments/239225.html</wfw:comment><comments>http://www.tkk7.com/imdosop/archive/2008/11/07/239225.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/imdosop/comments/commentRss/239225.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/imdosop/services/trackbacks/239225.html</trackback:ping><description><![CDATA[鍦∣RACLE涓紝涓轟簡淇濊瘉鏁版嵁鐨勪竴鑷存э紝鍦ㄥ鏁版嵁搴撲腑鐨勬暟鎹繘琛屾搷浣滄椂錛岀郴緇熶細榪涜瀵規暟鎹浉搴旂殑閿佸畾銆?br /> 褰撶▼搴忓鎵鍋氱殑淇敼榪涜鎻愪氦(commit)鎴栧洖婊氬悗(rollback)鍚庯紝閿佷綇鐨勮祫婧愪究浼氬緱鍒伴噴鏀撅紝浠庤屽厑璁稿叾瀹冪敤鎴瘋繘琛屾搷浣溿?<br /> 浣嗘槸錛屾湁鏃訛紝鐢變簬紼嬪簭涓殑鍘熷洜錛岄攣浣忚祫婧愬悗闀挎椂闂存湭瀵瑰叾宸ヤ綔榪涜鎻愪氦錛涙垨鏄敱浜庣敤鎴風殑鍘熷洜錛屽璋冨嚭闇瑕佷慨鏀圭殑鏁版嵁鍚庯紝鏈強鏃朵慨鏀瑰茍鎻愪氦錛岃屾槸鏀劇疆浜庝竴鏃侊紱鎴栨槸鐢變簬瀹㈡埛鏈嶅姟鍣ㄦ柟寮忎腑瀹㈡埛绔嚭鐜?姝繪満"錛岃屾湇鍔″櫒绔嵈騫舵湭媯嫻嬪埌錛屼粠鑰岄犳垚閿佸畾鐨勮祫婧愭湭琚強鏃墮噴鏀撅紝褰卞搷鍒板叾瀹冪敤鎴風殑鎿嶄綔銆?<br /> 榪欐椂錛屾垜浠渶瑕佽繀閫熷湴璇婃柇鍑洪攣浣忚祫婧愮殑鐢ㄦ埛騫惰В鍐沖叾閿佸畾銆?<br /> <br /> 1. 璇婃柇緋葷粺涓殑閿?br /> 涓轟簡鎵懼嚭緋葷粺涓偅浜涚敤鎴烽攣浣忚祫婧愪互鍙婇偅浜涚敤鎴峰湪絳夊緟鐩稿簲鐨勮祫婧愶紝鍙嬌鐢ㄤ互涓嬭鍙?鍏朵腑鐨?*+ NO_MERGE(..) */鍗冧竾涓嶅彲鐪佺暐, 鍚﹀垯浼氬緢鎱?錛?br /> <br /> -- looklock.sql<br /> -- use the NO_MERGE hints can speed up the query<br /> select /*+ NO_MERGE(a) NO_MERGE(b) NO_MERGE(c) */ 'Wait' "Status", a.username, a.machine, a.sid, a.serial#, a.last_call_et "Seconds", b.id1, c.sql_text "SQL"<br /> from v$session a, v$lock b, v$sqltext c<br /> where a.username is not null<br /> and a.lockwait = b.kaddr<br /> and c.hash_value =a.sql_hash_value<br /> union<br /> select /*+ NO_MERGE(a) NO_MERGE(b) NO_MERGE(c) */ 'Lock' "Status", a.username, a.machine, a.sid, a.serial#, a.last_call_et "Seconds", b.id1, c.sql_text "SQL"<br /> from v$session a, v$lock b, v$sqltext c<br /> where b.id1 in<br /> (select /*+ NO_MERGE(d) NO_MERGE(e) */ distinct e.id1<br /> from v$session d, v$lock e<br /> where d.lockwait = e.kaddr)<br /> and a.username is not null<br /> and a.sid = b.sid<br /> and b.request=0<br /> and c.hash_value =a.sql_hash_value;<br /> <br /> 鎵ц鍚庣殑緇撴灉濡備笅鎵紺猴細<br /> Stat USERNAME MACHINE SID SERIAL# Seconds ID1<br /> ---- ------------------------------ ---------------- --------- --------- --------- ---------<br /> SQL<br /> ----------------------------------------------------------------<br /> Lock CIQUSR CIQ\DULMACER 12 966 245 131089<br /> select * from c_trade_mode for update<br /> <br /> Wait CIQUSR CIQ\DULMACER 10 735 111 131089<br /> update c_trade_mode set x_name = 'zzz' where x_code='5'<br /> <br /> Wait CIQUSR CIQ\DULMACER 15 106 1094 131089<br /> select * from c_trade_mode for update<br /> <br /> <br /> 鍏朵腑錛?br /> Status鏈変袱縐嶇姸鎬侊紝LOCK琛ㄦ槑璇ヨ繘紼嬮攣浣忎簡鏌愪釜璧勬簮錛學AIT琛ㄧず璇ヨ繘紼嬫鍦ㄧ瓑寰呮煇涓祫婧愩?br /> Username, Machine鍒嗗埆涓篛RACLE鐢ㄦ埛鍚嶅強鏈哄櫒鍚?br /> SID錛孲ERIAL#鍙敤浜庨殢鍚庣殑瑙i攣鎿嶄綔<br /> Seconds琛ㄧず璇ヨ繘紼嬫渶鍚庝竴嬈¤繘琛屾搷浣滆嚦褰撳墠鐨勬椂闂?縐?<br /> ID1, 閿佹爣璇嗐傛煇涓狶OCK鐘舵佺殑ID1涓庢煇涓猈AIT鐘舵佺殑ID1鐩稿悓錛屽彲璇存槑閿佺殑姝f槸鍙︿竴涓繘紼嬬瓑寰呯殑銆?br /> SQL: 閿佷綇璧勬簮鐨凷QL璇彞<br /> <br /> 2. 瑙i櫎閿?br /> <br /> 璇婃柇鍑洪攣鐨勭姸鎬佸悗錛岃嫢鍙戠幇璇ラ樆濉炲叾瀹冪敤鎴瘋繘紼嬬殑榪涚▼鏄甯告搷浣滀腑錛屽垯鍙氱煡璇ョ敤鎴峰鍏惰繘琛屾彁浜わ紝浠庤岃揪鍒伴噴鏀鵑攣璧勬簮鐨勭洰鐨勶紱鑻ヤ負闈炴甯告搷浣滐紝鍗籌紝鍏剁姸鎬佷負"inactive"錛屼笖鍏禨econds宸蹭負杈冨闀挎椂闂達紝鍒欏彲鎵ц浠ヤ笅璇彞灝嗚榪涚▼榪涜娓呴櫎錛岀郴緇熶細鑷姩瀵瑰叾榪涜鍥炴粴錛屼粠鑰岄噴鏀鵑攣浣忕殑璧勬簮銆?<br /> <br /> alter system kill session 'sid, serial#'; <br /> <br /> 渚嬪: 瀵逛簬涓婁緥涓樉紺虹殑緇撴灉, 鍙敤浠ヤ笅璇彞娓呴櫎閿佷綇璧勬簮鐨勮繘紼?<br /> alter system kill session '12, 966'; <br /> <br /> 鍏充簬浣犳墍璇達細鍦ㄧ綉緇滄柇鎺夛紙閫氳繃鎷旀帀緗戠嚎錛夋垨闈炴甯哥粓姝㈣繘紼嬶紙閫氳繃task manager寮鴻鍏抽棴sql*plus)鏃訛紝oracle鍦ㄦ湁闄愮殑鏃墮棿鍐咃紙鎴戝彧瑙傛煡浜?-10鍒嗭級鍐咃紝oracle鏈兘瀵硅榪涚▼浣滀換浣曞鐞嗐?br /> 榪欎釜澶勭悊涓嶵CP鍗忚鏈夊叧錛屽洜涓篠QL NET鍦ㄤ嬌鐢═CP/IP鍗忚榪涜緗戠粶榪炴帴鏃舵槸涓縐嶇煭榪炴帴,褰揙RACLE榪炴帴寮傚父緇堟鏃訛紝鍥犱負鏄紓甯哥粓姝紝緇堟淇″彿騫舵病鏈夐氳繃緗戠粶閫氱煡server绔紝鍥犳鍙湁涓嬫server鏈夌粨鏋滀粠鏈嶅姟鍣ㄧ榪斿洖闇涓巆lient閫氫俊鏃訛紝server鎵嶄細鍙戠幇姝lient宸茬粡绔帀銆傚洜姝ゅ嚭鐜頒綘鍓嶉潰鎵鎻怬RACLE澶勭悊寮傚父緇堟榪涚▼寤舵椂鎯呭喌.<br /> 姝婚攣錛氫綘鍙互璇曢獙涓鏉″郊姝ゅ瓨鍦ㄤ緷璧栧叧緋葷殑update璇彞錛孫RACLE澶勭悊榪欑閿佹椂涓嶆槸寰堝ソ銆?br /> <br /> 鏌ラ攣璇彞錛氭煡璇駭鐢熼攣鐨勭敤鎴烽攣sql<br /> select a.username username, a.sid sid, a.serial# serial,b.id1 id1, c.sql_text sqltext<br /> from v$session a, v$lock b, v$sqltext c<br /> where b.id1 in<br /> 銆銆 (select distinct e.id1<br /> 銆銆 from v$session d, v$lock e<br /> 銆銆 where d.lockwait = e.kaddr)<br /> 銆銆 and a.sid = b.sid<br /> 銆銆 and c.hash_value = a.sql_hash_value<br /> 銆銆 and b.request = 0;<br /> <br /> <br /> 姝婚攣錛氬綋涓や釜浜嬪姟闇瑕佷竴緇勬湁鍐茬獊鐨勯攣錛岃屼笉鑳藉皢浜嬪姟緇х畫涓嬪幓鐨勮瘽錛屽氨 鍑虹幇姝婚攣銆?br /> 濡備簨鍔?鍦ㄨ〃A琛岃褰?3涓湁涓鎺掑畠閿侊紝騫剁瓑寰呬簨鍔?鍦ㄨ〃A涓褰?4 涓帓瀹冮攣鐨勯噴鏀撅紝鑰屼簨鍔?鍦ㄨ〃A璁板綍琛?4涓湁涓鎺掑畠閿侊紝騫剁瓑寰呬簨鍔?1鍦ㄨ〃A涓褰?3涓帓瀹冮攣鐨勯噴鏀撅紝浜嬪姟1涓庝簨鍔?褰兼絳夊緟錛屽洜姝ゅ氨閫?鎴愪簡姝婚攣銆傛閿佷竴鑸槸鍥犳嫏鍔g殑浜嬪姟璁捐鑰屼駭鐢?br /> <br /> <em style="font-size: 10pt; color: #c0c0c0">鐗堟潈褰掑師浣滆呭拰鍚勫彂甯冪綉绔欐墍鏈夛紝姝ゆ枃绔犱粎渚涘涔犲弬鑰冧箣鐢?/em> <br /> <br /> <img src ="http://www.tkk7.com/imdosop/aggbug/239225.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/imdosop/" target="_blank">鏉遍牠bing闃塊牠</a> 2008-11-07 14:32 <a href="http://www.tkk7.com/imdosop/archive/2008/11/07/239225.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>鏁版嵁搴撻攣琛ㄥ師鍥犲垎鏋?lt;浜?gt;http://www.tkk7.com/imdosop/archive/2008/11/07/239207.html鏉遍牠bing闃塊牠鏉遍牠bing闃塊牠Fri, 07 Nov 2008 03:34:00 GMThttp://www.tkk7.com/imdosop/archive/2008/11/07/239207.htmlhttp://www.tkk7.com/imdosop/comments/239207.htmlhttp://www.tkk7.com/imdosop/archive/2008/11/07/239207.html#Feedback0http://www.tkk7.com/imdosop/comments/commentRss/239207.htmlhttp://www.tkk7.com/imdosop/services/trackbacks/239207.html 褰搖serA鍙戝嚭 select * from 琛ㄥ悕 for update of 瀛楁 鏃?
榪欐槸綰綍琚攣浣忕瓑寰呮洿鏂?
褰搖serB姝ゆ椂涔熷彂鍑簊elect * from 琛ㄥ悕 for update of 瀛楁 鏃?
騫朵笖for update of 鐨勭邯褰曞凡緇忚userA閿佸畾
榪欐槸userB鍙兘絳夊緟userA鎻愪氦鍚庢墠鑳借幏鍙栧埌userA琚崰鐢ㄧ殑綰綍
濡傛灉userA涓嶆彁浜serB灝變細鏃犻檺鏈熺殑絳夊緟
瑙e喅鏂規硶
userB鎵цselect * from 琛ㄥ悕 for update of 瀛楁 no wait 10;
榪欐椂铏界劧綰綍琚玼serA閿佸畾浣嗘槸userB浼氱瓑寰?0縐掑鏋?0縐掑唴userA閲婃斁
浜嗙邯褰曪紝鍒檜serB鑾峰彇璇ラ攣,濡傛灉10縐掑悗userA鏈噴鏀鵑攣,鍒檜serB榪斿洖
閿欒娑堟伅
ora-30006:璧勬簮宸茶鍗犵敤;鎵ц姝ゆ搷浣滄椂鍑虹幇wait瓚呮椂

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userA閿佷綇涓鏉$邯褰?
userB閿佷綇涓鏉$邯褰?
userA璇鋒眰閿佷綇userB姝e湪閿佷綇鐨勭邯褰?
鑰屽悓鏃秛serB璇鋒眰閿佷綇userA姝e湪閿佷綇鐨勭邯褰?
榪欐椂鍊欏氨浼氫駭鐢熸閿?br />
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濡傛灉鍦ㄤ簨鍔′腑鎵ц浜嗕竴鏉′笉婊¤凍鏉′歡鐨剈pdate璇彞錛屽垯鎵ц鍏ㄨ〃鎵弿錛屾妸琛岀駭閿佷笂鍗囦負琛ㄧ駭閿侊紝澶氫釜榪欐牱鐨勪簨鍔℃墽琛屽悗錛屽氨寰堝鏄撲駭鐢熸閿併?br />  
鐗堟潈褰掑師浣滆呭拰鍚勫彂甯冪綉绔欐墍鏈夛紝姝ゆ枃绔犱粎渚涘涔犲弬鑰冧箣鐢?/em> 

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鏁版嵁搴撻攣琛ㄥ師鍥犲垎鏋?lt;涓>http://www.tkk7.com/imdosop/archive/2008/11/06/239085.html鏉遍牠bing闃塊牠鏉遍牠bing闃塊牠Thu, 06 Nov 2008 10:11:00 GMThttp://www.tkk7.com/imdosop/archive/2008/11/06/239085.htmlhttp://www.tkk7.com/imdosop/comments/239085.htmlhttp://www.tkk7.com/imdosop/archive/2008/11/06/239085.html#Feedback0http://www.tkk7.com/imdosop/comments/commentRss/239085.htmlhttp://www.tkk7.com/imdosop/services/trackbacks/239085.html 姝婚攣浜х敓鐨勫師鍥?/strong>           
    鍦ㄨ仈鏈轟簨鍔″鐞嗙郴緇熶腑錛岄犳垚姝繪満涓昏鏈変袱鏂歸潰鍘熷洜銆備竴鏂歸潰錛岀敱浜庡鐢ㄦ埛銆佸浠誨姟鐨勫茍鍙戞у拰浜嬪姟鐨勫畬鏁存ц姹傦紝褰撳涓簨鍔″鐞嗗澶氫釜璧勬簮鍚屾椂璁塊棶鏃訛紝鑻ュ弻鏂瑰凡閿佸畾涓閮ㄥ垎璧勬簮浣嗕篃閮介渶瑕佸鏂瑰凡閿佸畾鐨勮祫婧愭椂錛屾棤娉曞湪鏈夐檺鐨勬椂闂村唴瀹屽叏鑾峰緱鎵闇鐨勮祫婧愶紝灝變細澶勪簬鏃犻檺鐨勭瓑寰呯姸鎬侊紝浠庤岄犳垚鍏跺璧勬簮闇姹傜殑姝婚攣銆?nbsp;          
    鍙︿竴鏂歸潰錛屾暟鎹簱鏈韓鍔犻攣鏈哄埗鐨勫疄鐜版柟娉曚笉鍚岋紝鍚勬暟鎹簱緋葷粺涔熶細浜х敓鍏剁壒孌婄殑姝婚攣鎯呭喌銆傚鍦⊿ybase       SQL Server 11涓紝鏈灝忛攣涓?K涓欏電殑鍔犻攣鏂規硶錛岃岄潪琛岀駭閿併傚鏋滄煇寮犺〃鐨勮褰曟暟灝戜笖璁板綍鐨勯暱搴﹁緝鐭?鍗寵褰曞瘑搴﹂珮錛屽搴旂敤緋葷粺涓殑緋葷粺閰嶇疆琛ㄦ垨緋葷粺鍙傛暟琛ㄥ氨灞炰簬姝ょ被琛?錛岃璁塊棶鐨勯鐜囬珮錛屽氨瀹規槗鍦ㄨ欏典笂浜х敓姝婚攣銆?br />          
瀹規槗鍙戠敓姝婚攣鐨勫嚑縐嶆儏鍐靛涓?           
1>涓嶅悓鐨勫瓨鍌ㄨ繃紼嬨佽Е鍙戝櫒銆佸姩鎬丼QL璇彞孌墊寜鐓т笉鍚岀殑欏哄簭鍚屾椂璁塊棶澶氬紶琛?              
2>鍦ㄤ氦鎹㈡湡闂存坊鍔犺褰曢綣佺殑琛紝浣嗗湪璇ヨ〃涓婁嬌鐢ㄤ簡闈炵兢闆嗙儲寮?non-clustered);              
3>琛ㄤ腑鐨勮褰曞皯錛屼笖鍗曟潯璁板綍杈冪煭錛岃璁塊棶鐨勯鐜囪緝楂橈紱          
4>鏁村紶琛ㄨ璁塊棶鐨勯鐜囬珮(濡備唬鐮佸鐓ц〃鐨勬煡璇㈢瓑)銆?nbsp;          

浠ヤ笂姝婚攣鎯呭喌鐨勫搴斿鐞嗘柟娉曞涓? 
       
1>鍦ㄧ郴緇熷疄鐜版椂搴旇瀹氭墍鏈夊瓨鍌ㄨ繃紼嬨佽Е鍙戝櫒銆佸姩鎬丼QL璇彞孌典腑錛屽澶氬紶琛ㄧ殑鎿嶄綔鎬繪槸浣跨敤鍚屼竴欏哄簭銆傚錛氭湁涓や釜瀛樺偍榪囩▼proc1銆乸roc2錛岄兘闇瑕佽闂笁寮犺〃zltab銆亃2tab鍜寊3tab錛屽鏋減roc1鎸夌収zltab銆亃2tab鍜寊3tab鐨勯『搴忚繘琛岃闂紝閭d箞錛宲roc2涔熷簲璇ユ寜鐓т互涓婇『搴忚闂繖涓夊紶琛ㄣ?nbsp;         
2>瀵瑰湪浜ゆ崲鏈熼棿娣誨姞璁板綍棰戠箒鐨勮〃錛屼嬌鐢ㄧ兢闆嗙儲寮?clustered)錛屼互鍑忓皯澶氫釜鐢ㄦ埛娣誨姞璁板綍鍒拌琛ㄧ殑鏈鍚庝竴欏典笂錛屽湪琛ㄥ熬浜х敓鐑偣錛岄犳垚姝婚攣銆傝繖綾昏〃澶氫負寰鏉ヨ處鐨勬祦姘磋〃錛屽叾鐗圭偣鏄湪浜ゆ崲鏈熼棿闇瑕佸湪琛ㄥ熬榪藉姞澶ч噺鐨勮褰曪紝騫朵笖瀵瑰凡娣誨姞鐨勮褰曚笉鍋氭垨杈冨皯鍋氬垹闄ゆ搷浣溿?nbsp;         
3>瀵瑰崟寮犺〃涓褰曟暟涓嶅お澶氾紝涓斿湪浜ゆ崲鏈熼棿select鎴杣pdata杈冮綣佺殑琛ㄥ彲浣跨敤璁劇疆姣忛〉鏈澶ц鐨勫姙娉曪紝鍑忓皯鏁版嵁鍦ㄨ〃涓瓨鏀劇殑瀵嗗害錛屾ā鎷熻綰ч攣錛屽噺灝戝湪璇ヨ〃涓婃閿佹儏鍐電殑鍙戠敓銆傝繖綾昏〃澶氫負淇℃伅綣佹潅涓旇褰曟潯鏁板皯鐨勮〃銆?br />            
濡傦細緋葷粺閰嶇疆琛ㄦ垨緋葷粺鍙傛暟琛ㄣ傚湪瀹氫箟璇ヨ〃鏃舵坊鍔犲涓嬭鍙ワ細           
with   max_rows_per_page=1           
鍦ㄥ瓨鍌ㄨ繃紼嬨佽Е鍙戝櫒銆佸姩鎬丼QL璇彞孌典腑錛岃嫢瀵規煇浜涙暣寮犺〃select鎿嶄綔杈冮綣侊紝鍒欏彲鑳藉湪璇ヨ〃涓婁笌鍏朵粬璁塊棶璇ヨ〃鐨勭敤鎴蜂駭鐢熸閿併傚浜庢鏌ヨ處鍙鋒槸鍚﹀瓨鍦紝浣嗚媯鏌ョ殑瀛楁鍦ㄦ鏌ユ湡闂翠笉浼氳鏇存柊絳夐潪鍏抽敭璇彞錛屽彲浠ラ噰鐢ㄥ湪select鍛戒護涓嬌鐢╝t       isolation       read       uncommitted瀛愬彞鐨勬柟娉曡В鍐熾傝鏂規硶瀹為檯涓婇檷浣庝簡select璇彞瀵規暣寮犺〃鐨勯攣綰у埆錛屾彁楂樹簡鍏朵粬鐢ㄦ埛瀵硅琛ㄦ搷浣滅殑騫跺彂鎬с傚湪緋葷粺楂樿礋鑽瘋繍琛屾椂錛岃鏂規硶鐨勬晥鏋滃挨涓烘樉钁椼?nbsp;          
濡傦細          
select * from titles at isolation read uncommitted          
瀵規祦姘村彿涓綾葷殑欏哄簭鏁扮敓鎴愬櫒瀛楁錛屽彲浠ュ厛鎵цupdata嫻佹按鍙峰瓧孌?1錛岀劧鍚庡啀鎵цselect鑾峰彇嫻佹按鍙風殑鏂規硶榪涜鎿嶄綔銆?br />
鐗堟潈褰掑師浣滆呭拰鍚勫彂甯冪綉绔欐墍鏈夛紝姝ゆ枃绔犱粎渚涘涔犲弬鑰冧箣鐢?/em>  

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