{"id":306,"date":"2021-08-01T17:25:44","date_gmt":"2021-08-01T09:25:44","guid":{"rendered":"http:\/\/dba.qishuo.xin\/?p=306"},"modified":"2022-02-27T07:03:18","modified_gmt":"2022-02-26T23:03:18","slug":"oracle%e9%98%9f%e5%88%97%e7%ad%89%e5%be%85%e4%b9%8benq-tx-row-lock-contention%e4%b8%80","status":"publish","type":"post","link":"http:\/\/dba.qishuo.xin\/?p=306","title":{"rendered":"Oracle\u961f\u5217\u7b49\u5f85\u4e4benq: TX &#8211; row lock contention(\u4e00)"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 ez-toc-wrap-right counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-69f7319ba3ff8\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69f7319ba3ff8\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/dba.qishuo.xin\/?p=306\/#1_TX%E8%A1%8C%E9%94%81%E4%BA%A7%E7%94%9F%E5%8E%9F%E5%9B%A0\" >1. TX\u884c\u9501\u4ea7\u751f\u539f\u56e0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/dba.qishuo.xin\/?p=306\/#2_TX%E8%A1%8C%E9%94%81%E7%9A%84%E5%8D%B1%E5%AE%B3\" >2. TX\u884c\u9501\u7684\u5371\u5bb3<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/dba.qishuo.xin\/?p=306\/#21_%E4%B8%9A%E5%8A%A1%E6%93%8D%E4%BD%9C%E9%95%BF%E6%97%B6%E9%97%B4%E6%97%A0%E6%B3%95%E5%AE%8C%E6%88%90\" >2.1. \u4e1a\u52a1\u64cd\u4f5c\u957f\u65f6\u95f4\u65e0\u6cd5\u5b8c\u6210<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/dba.qishuo.xin\/?p=306\/#22_%E4%BC%9A%E5%AF%BC%E8%87%B4%E4%BC%9A%E8%AF%9D%E7%A7%AF%E5%8E%8B\" >2.2. \u4f1a\u5bfc\u81f4\u4f1a\u8bdd\u79ef\u538b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/dba.qishuo.xin\/?p=306\/#23_%E4%BC%9A%E5%AF%BC%E8%87%B4%E4%BA%A7%E7%94%9F%E5%85%B6%E4%BB%96%E4%BA%89%E7%94%A8\" >2.3. \u4f1a\u5bfc\u81f4\u4ea7\u751f\u5176\u4ed6\u4e89\u7528<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/dba.qishuo.xin\/?p=306\/#3_TX%E8%A1%8C%E9%94%81%E7%9A%84%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88\" >3. TX\u884c\u9501\u7684\u89e3\u51b3\u65b9\u6848<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"http:\/\/dba.qishuo.xin\/?p=306\/#4_%E6%9F%A5%E8%AF%A2TX%E8%A1%8C%E9%94%81\" >4. \u67e5\u8be2TX\u884c\u9501<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"http:\/\/dba.qishuo.xin\/?p=306\/#41_%E6%9F%A5%E8%AF%A2%E5%BD%93%E5%89%8DTX%E8%A1%8C%E9%94%81\" >4.1. \u67e5\u8be2\u5f53\u524dTX\u884c\u9501<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"http:\/\/dba.qishuo.xin\/?p=306\/#42_%E6%9F%A5%E8%AF%A2%E5%8E%86%E5%8F%B2TX%E8%A1%8C%E9%94%81\" >4.2. \u67e5\u8be2\u5386\u53f2TX\u884c\u9501<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"1_TX%E8%A1%8C%E9%94%81%E4%BA%A7%E7%94%9F%E5%8E%9F%E5%9B%A0\"><\/span>1. TX\u884c\u9501\u4ea7\u751f\u539f\u56e0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\u7b2c\u4e00\u79cd\u60c5\u51b5\uff1a\u5f53\u4e24\u4e2a\u4f1a\u8bdd\u5bf9\u540c\u4e00\u884c\u8fdb\u884c\u66f4\u65b0\u65f6\uff0cORACLE\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u5e93\u7684\u4e00\u81f4\u6027\uff0c\u52a0\u4e86\u4e00\u4e2aTX\u9501\uff0c\u8fd9\u65f6\u53e6\u4e00\u4e2a\u6216\u591a\u4e2a\u4f1a\u8bdd\u5fc5\u987b\u7b49\u5f85\u7b2c\u4e00\u4e2a\u4f1a\u8bddcommit\u6216rollback\uff0c\u5426\u5219\u4f1a\u4e00\u7b49\u5f85\u4e0b\u53bb\uff0c\u8fd9\u662f\u6700\u4e3a\u5e38\u89c1\u7684\u4e00\u79cd\u6a21\u5f0f\uff01<\/li>\n<li>\u7b2c\u4e8c\u79cd\u60c5\u51b5\uff1a\u4e24\u4e2a\u6216\u591a\u4e2a\u4f1a\u8bdd\u5411\u5177\u6709\u552f\u4e00\u4e3b\u5065\u7d22\u5f15\u7684\u8868\u4e2d\u63d2\u5165\u6216\u66f4\u65b0\u76f8\u540c\u7684\u6570\u636e\u884c\uff0c\u65e2\u7136\u662f\u552f\u4e00\u4e3b\u5065\u7d22\u5f15\uff0c\u90a3\u4e48\u5148\u83b7\u5f97\u63d2\u5165\u7684session\u4ee5TX\u6392\u5b83\u9501\u6a21\u5f0f\u8fdb\u884c\u6dfb\u52a0\uff0c\u6b64\u65f6\u5176\u5b83session\u53ea\u80fd\u7b49\u5f85\uff0c\u4e5f\u662f\u5e38\u89c1\u7684\u4e00\u79cd\u60c5\u51b5<\/li>\n<li>\u7b2c\u4e09\u79cd\u60c5\u51b5\uff1a\u4e24\u4e2a\u6216\u591a\u4e2a\u4f1a\u8bdd\u63d2\u5165\u6216\u66f4\u65b0\u5177\u6709\u4f4d\u56fe\u7d22\u5f15\u7684\u5217\uff0c\u8ddf\u636e\u4f4d\u56fe\u7d22\u5f15\u7684\u7279\u6027\uff0c\u4e00\u4e2a\u7d22\u5f15\u952e\u503c\u5bf9\u5e94\u591a\u4e2a\u6570\u636e\u884c\u7684rowid\u503c\uff0c\u6b64\u79cd\u60c5\u51b5\u4e0b\u4e5f\u662f\u4ee5TX\u6a21\u5f0f\u8bbf\u95ee\uff0c\u4e00\u822c\u5728OLTP\u7cfb\u7edf\u4e2d\u5f88\u5c11\u6709\u4f4d\u56fe\u7d22\u5f15\uff0c\u4f46\u4e0d\u6392\u9664\u4e2a\u522b\u7cfb\u7edf\u3002<\/li>\n<li>\u7b2c\u56db\u79cd\u60c5\u51b5\uff1a\u8c03\u7528dbms_repair\u5305\u65f6\u4e5f\u4f1a\u4ea7\u751fTX<\/li>\n<li>\u7b2c\u4e94\u79cd\u60c5\u51b5\uff1a\u7531ORACLE BUG\u5f15\u8d77\u7684(Bug 5849679 - Undetected deadlock in RAC involving a TM lock)<\/li>\n<\/ul>\n<p>\u4ea7\u751f\u8be5\u7b49\u5f85\u4e8b\u4ef6\u7684\u539f\u56e0\u57fa\u672c\u4e0a\u5c31\u662f\u4e0a\u9762\u4e94\u79cd\u60c5\u51b5\uff0c\u524d\u4e09\u79cd\u4f18\u4e3a\u5e38\u89c1.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_TX%E8%A1%8C%E9%94%81%E7%9A%84%E5%8D%B1%E5%AE%B3\"><\/span>2. TX\u884c\u9501\u7684\u5371\u5bb3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4f1a\u5bfc\u81f4\u5176\u4ed6\u4f1a\u8bdd\u7684\u76f8\u5173\u4e1a\u52a1\u64cd\u4f5chang\u4f4f<\/p>\n<h4><span class=\"ez-toc-section\" id=\"21_%E4%B8%9A%E5%8A%A1%E6%93%8D%E4%BD%9C%E9%95%BF%E6%97%B6%E9%97%B4%E6%97%A0%E6%B3%95%E5%AE%8C%E6%88%90\"><\/span>2.1. \u4e1a\u52a1\u64cd\u4f5c\u957f\u65f6\u95f4\u65e0\u6cd5\u5b8c\u6210<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u7528\u6237\u6295\u8bc9<\/p>\n<h4><span class=\"ez-toc-section\" id=\"22_%E4%BC%9A%E5%AF%BC%E8%87%B4%E4%BC%9A%E8%AF%9D%E7%A7%AF%E5%8E%8B\"><\/span>2.2. \u4f1a\u5bfc\u81f4\u4f1a\u8bdd\u79ef\u538b<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u9010\u6e10\u88ab\u5360\u6ee1<br \/>\n\u5e94\u7528\u83b7\u53d6\u4e0d\u5230\u6570\u636e\u6e90\u65e0\u6cd5\u521b\u5efa\u65b0\u7684\u6570\u636e\u5e93\u8fde\u63a5<br \/>\n\u6216\u64cd\u4f5c\u7cfb\u7edfCPU\u3001\u5185\u5b58\u8d44\u6e90\u9010\u6e10\u8017\u5c3d\uff0c\u65e0\u6cd5\u521b\u5efa\u65b0\u7684\u6570\u636e\u5e93\u8fde\u63a5<\/p>\n<h4><span class=\"ez-toc-section\" id=\"23_%E4%BC%9A%E5%AF%BC%E8%87%B4%E4%BA%A7%E7%94%9F%E5%85%B6%E4%BB%96%E4%BA%89%E7%94%A8\"><\/span>2.3. \u4f1a\u5bfc\u81f4\u4ea7\u751f\u5176\u4ed6\u4e89\u7528<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u5982bufferbusy wait, ITL contention\u7b49<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3_TX%E8%A1%8C%E9%94%81%E7%9A%84%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88\"><\/span>3. TX\u884c\u9501\u7684\u89e3\u51b3\u65b9\u6848<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>1\u3001\u5148\u884c\u4f1a\u8bdd\u9700\u8981\u7ed3\u675f\u4e8b\u52a1\uff08transaction\uff09\uff1acommit\u6216\u8005rollback<br \/>\n2\u3001\u5f3a\u5236\u7ed3\u675f\u5148\u884c\u4f1a\u8bdd\uff1akill session\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"4_%E6%9F%A5%E8%AF%A2TX%E8%A1%8C%E9%94%81\"><\/span>4. \u67e5\u8be2TX\u884c\u9501<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><code>dba_hist_active_sess_history<\/code>\u548c<code>v$active_session_history<\/code><br \/>\n\u53c2\u8003\uff1ahttp:\/\/blog.chinaunix.net\/uid-31396856-id-5784934.html<br \/>\nhttps:\/\/blog.csdn.net\/cscscscsc\/article\/details\/62422686<\/p>\n<h4><span class=\"ez-toc-section\" id=\"41_%E6%9F%A5%E8%AF%A2%E5%BD%93%E5%89%8DTX%E8%A1%8C%E9%94%81\"><\/span>4.1. \u67e5\u8be2\u5f53\u524dTX\u884c\u9501<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u53c2\u89c1\uff1a<br \/>\n<a target=\"_blank\" class=\"wp-editor-md-post-content-link\" href=\"http:\/\/dba.qishuo.xin\/?p=311\" title=\"Oracle\u67e5\u8be2\u5f53\u524denq: TX \u2013 row lock contention\">Oracle\u67e5\u8be2\u5f53\u524denq: TX \u2013 row lock contention<\/a><\/p>\n<h4><span class=\"ez-toc-section\" id=\"42_%E6%9F%A5%E8%AF%A2%E5%8E%86%E5%8F%B2TX%E8%A1%8C%E9%94%81\"><\/span>4.2. \u67e5\u8be2\u5386\u53f2TX\u884c\u9501<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u53c2\u8003\uff1a<br \/>\nhttps:\/\/www.sohu.com\/a\/207720182_505827<br \/>\nhttps:\/\/chowdera.com\/2021\/04\/20210418131719513G.html<br \/>\nhttps:\/\/www.cndba.cn\/leo1990\/article\/2769<br \/>\nhttps:\/\/www.cnblogs.com\/datalife\/p\/9759471.html (RAC)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. TX\u884c\u9501\u4ea7\u751f\u539f\u56e0 \u7b2c\u4e00\u79cd\u60c5\u51b5\uff1a\u5f53\u4e24\u4e2a\u4f1a\u8bdd\u5bf9\u540c&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,21],"tags":[],"class_list":["post-306","post","type-post","status-publish","format-standard","hentry","category-oracle"],"_links":{"self":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts\/306","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=306"}],"version-history":[{"count":7,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts\/306\/revisions"}],"predecessor-version":[{"id":1345,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts\/306\/revisions\/1345"}],"wp:attachment":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=306"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=306"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=306"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}