{"id":640,"date":"2012-03-07T23:10:05","date_gmt":"2012-03-07T15:10:05","guid":{"rendered":"https:\/\/yangtingkun.net\/?p=640"},"modified":"2012-03-10T10:11:02","modified_gmt":"2012-03-10T02:11:02","slug":"%e4%b8%ad%e6%ad%a2%e8%bf%9b%e7%a8%8b%e5%af%bc%e8%87%b4%e7%b3%bb%e7%bb%9fhang%e4%bd%8f","status":"publish","type":"post","link":"https:\/\/yangtingkun.net\/?p=640","title":{"rendered":"\u4e2d\u6b62\u8fdb\u7a0b\u5bfc\u81f4\u7cfb\u7edfHANG\u4f4f"},"content":{"rendered":"<p>\u4ee5\u524d\u572811g\u4e0a\u78b0\u5230\u8fc7\u4e00\u6b21\u7c7b\u4f3c\u7684\u60c5\u51b5\uff0c\u7531\u4e8eALTER SYSTEM KILL SESSION\u5bfc\u81f4\u8d44\u6e90\u88ab\u5b8c\u5168\u5360\u7528\uff0c\u5728\u4e00\u6bb5\u65f6\u95f4\u5185\u6570\u636e\u5e93\u5904\u4e8eHANG\u4f4f\u72b6\u6001\u3002\u8fd9\u6b21\u53c8\u78b0\u5230\u7c7b\u4f3c\u7684\u95ee\u9898\u3002<br \/>\n\u7b80\u5355\u63cf\u8ff0\u4e00\u4e0b\u95ee\u9898\u4ea7\u751f\u7684\u73af\u5883\uff0c\u7528\u6237\u5728\u8fdb\u884c\u6d4b\u8bd5\uff0c\u5728\u5f88\u77ed\u7684\u65f6\u95f4\u5185\u8fde\u7eed\u542f\u52a8\u4e86\u591a\u4e2a\u5e94\u7528\u670d\u52a1\u5668\uff0c\u5bfc\u81f4\u5927\u91cf\u7684\u5e76\u53d1\u8fdb\u7a0b\u540c\u65f6\u8fde\u63a5\u5230\u6570\u636e\u5e93\u4e2d\uff0c\u81f4\u4f7f\u6570\u636e\u5e93\u670d\u52a1\u5668CPU\u5229\u7528\u7387\u4e00\u4e0b\u51b2\u5230100%\u3002<br \/>\n\u7531\u4e8e\u6570\u636e\u5e93\u7684\u8fd9\u79cd\u72b6\u6001\uff0c\u7528\u6237\u51b3\u5b9a\u4e2d\u6b62\u4e00\u4e9b\u8fdb\u7a0b\u6765\u91ca\u653e\u670d\u52a1\u5668\u4e0a\u7684\u8d44\u6e90\u3002\u4f46\u662f\u901a\u8fc7kill -9\u548calter system kill session\u6740\u6389\u5927\u91cf\u7684\u4f1a\u8bdd\u540e\uff0c\u6570\u636e\u5e93\u670d\u52a1\u5668\u53cd\u800c\u5904\u4e8eHANG\u6b7b\u72b6\u6001\uff0c\u8fd9\u65f6\u8fdesqlplus \/ as sysdba\u90fd\u65e0\u975e\u6b63\u5e38\u767b\u5f55\u3002<br \/>\n\u4e8e\u662f\u7528\u6237\u7ee7\u7eed\u901a\u8fc7kill -9\u6e05\u9664\u6240\u6709\u975e\u672c\u5730\u8fde\u63a5\uff0c\u5230\u6700\u540e\u6240\u6709\u8fde\u63a5\u5230\u6570\u636e\u5e93\u7684\u975e\u672c\u5730\u8fde\u63a5\u5df2\u7ecf\u5b8c\u5168\u88ab\u6740\u6389\uff0c\u800c\u670d\u52a1\u5668\u4e0a\u7684CPU\u8d44\u6e90\u5df2\u7ecf\u4e0b\u964d\uff0c\u53ea\u6709Oracle\u7684PMON\u8fdb\u7a0b\u5360\u7528\u4e86\u5355CPU\u768450%\u5de6\u53f3\uff0c\u5176\u4ed6CPU\u5b8c\u5168\u7a7a\u95f2\u3002\u53ef\u662f\u6b64\u65f6\u6570\u636e\u5e93\u4ecd\u7136\u65e0\u975e\u6b63\u5e38\u767b\u5f55\u3002<br \/>\n\u6b64\u65f6\u53ea\u80fd\u901a\u8fc7sqlplus \u2013prelim \u201c\/ as sysdba\u201d\u65b9\u5f0f\u767b\u5f55\uff0c\u7136\u540e\u5229\u7528oradebug\u6267\u884csystemstate\u7684dump\uff0c\u67e5\u770b\u5bfc\u81f4\u6570\u636e\u5e93HANG\u6b7b\u7684\u539f\u56e0\u3002<br \/>\n\u68c0\u67e5SYSTEMSTATE\u7684DUMP\u6587\u4ef6\uff0c\u53d1\u73b0PMON\u8fdb\u7a0b\u548c\u5927\u91cf\u7684DEAD\u8fdb\u7a0b\u90fd\u5728\u7ecf\u5386library cache: mutex X\u7b49\u5f85\u4e8b\u4ef6\u3002\u800c\u6574\u4e2aDUMP\u6587\u4ef6\u4e2dlibrary cache: mutex X\u7b49\u5f85\u4e8b\u4ef6\u51fa\u73b0\u4e863000\u591a\u6b21\u3002\u8fd9\u4e2a\u7b49\u5f85\u4e8b\u4ef6\u662f\u4e0d\u6b63\u5e38\u7684\u3002<br \/>\n\u67e5\u8be2MOS\u53d1\u73b0\u679c\u7136\u662fbug\uff1aBug 9312879  &#8220;library cache: mutex x&#8221; waits after killing sessions \/ PMON slow to clean up\u3002\u572811.1\u4e2d\uff0c\u5982\u679c\u4f1a\u8bdd\u5728KILL\uff0c\u90a3\u4e48PMON\u8fdb\u7a0b\u53ef\u80fd\u5728\u6e05\u9664\u8fdb\u7a0b\u4f1a\u8bdd\u662f\u51fa\u73b0\u5f02\u5e38\uff0c\u5bfc\u81f4\u6e05\u9664\u8fdb\u7a0b\u5931\u8d25\u540e\u4e0d\u65ad\u5c1d\u8bd5\uff0c\u5e76\u6700\u7ec8\u4ea7\u751f\u8fd9\u4e2a\u95ee\u9898\u3002<br \/>\n\u8fd9\u4e2aBUG\u572811.2.0.1\u548c11.1.0.7.7\u4e2d\u88abfixed\uff0c\u800cOracle\u5bf9\u4e8e\u8fd9\u4e2a\u95ee\u9898\u7684\u4e34\u65f6\u89e3\u51b3\u65b9\u6848\u662f\u4e0d\u8981kill\u4f1a\u8bdd\u3002\u770b\u676511.1\u7248\u672c\u548c11.2\u76f8\u6bd4\u786e\u5b9e\u662f\u95ee\u9898\u66f4\u591a\u4e00\u4e9b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ee5\u524d\u572811g\u4e0a\u78b0\u5230\u8fc7\u4e00\u6b21\u7c7b\u4f3c\u7684\u60c5\u51b5\uff0c\u7531\u4e8eALTER SYSTEM KILL SESSION\u5bfc\u81f4\u8d44\u6e90\u88ab\u5b8c\u5168\u5360\u7528\uff0c\u5728\u4e00\u6bb5\u65f6\u95f4\u5185\u6570\u636e\u5e93\u5904\u4e8eHANG\u4f4f\u72b6\u6001\u3002\u8fd9\u6b21\u53c8\u78b0\u5230\u7c7b\u4f3c\u7684\u95ee\u9898\u3002 \u7b80\u5355\u63cf\u8ff0\u4e00\u4e0b\u95ee\u9898\u4ea7\u751f\u7684\u73af\u5883\uff0c\u7528\u6237\u5728\u8fdb\u884c\u6d4b\u8bd5\uff0c\u5728\u5f88\u77ed\u7684\u65f6\u95f4\u5185\u8fde\u7eed\u542f\u52a8\u4e86\u591a\u4e2a\u5e94\u7528\u670d\u52a1\u5668\uff0c\u5bfc\u81f4\u5927\u91cf\u7684\u5e76\u53d1\u8fdb\u7a0b\u540c\u65f6\u8fde\u63a5\u5230\u6570\u636e\u5e93\u4e2d\uff0c\u81f4\u4f7f\u6570\u636e\u5e93\u670d\u52a1\u5668CPU\u5229\u7528\u7387\u4e00\u4e0b\u51b2\u5230100%\u3002 \u7531\u4e8e\u6570\u636e\u5e93\u7684\u8fd9\u79cd\u72b6\u6001\uff0c\u7528\u6237\u51b3\u5b9a\u4e2d\u6b62\u4e00\u4e9b\u8fdb\u7a0b\u6765\u91ca\u653e\u670d\u52a1\u5668\u4e0a\u7684\u8d44\u6e90\u3002\u4f46\u662f\u901a\u8fc7kill -9\u548calter system kill session\u6740\u6389\u5927\u91cf\u7684\u4f1a\u8bdd\u540e\uff0c\u6570\u636e\u5e93\u670d\u52a1\u5668\u53cd\u800c\u5904\u4e8eHANG\u6b7b\u72b6\u6001\uff0c\u8fd9\u65f6\u8fdesqlplus \/ as sysdba\u90fd\u65e0\u975e\u6b63\u5e38\u767b\u5f55\u3002 \u4e8e\u662f\u7528\u6237\u7ee7\u7eed\u901a\u8fc7kill -9\u6e05\u9664\u6240\u6709\u975e\u672c\u5730\u8fde\u63a5\uff0c\u5230\u6700\u540e\u6240\u6709\u8fde\u63a5\u5230\u6570\u636e\u5e93\u7684\u975e\u672c\u5730\u8fde\u63a5\u5df2\u7ecf\u5b8c\u5168\u88ab\u6740\u6389\uff0c\u800c\u670d\u52a1\u5668\u4e0a\u7684CPU\u8d44\u6e90\u5df2\u7ecf\u4e0b\u964d\uff0c\u53ea\u6709Oracle\u7684PMON\u8fdb\u7a0b\u5360\u7528\u4e86\u5355CPU\u768450%\u5de6\u53f3\uff0c\u5176\u4ed6CPU\u5b8c\u5168\u7a7a\u95f2\u3002\u53ef\u662f\u6b64\u65f6\u6570\u636e\u5e93\u4ecd\u7136\u65e0\u975e\u6b63\u5e38\u767b\u5f55\u3002 \u6b64\u65f6\u53ea\u80fd\u901a\u8fc7sqlplus \u2013prelim \u201c\/ as sysdba\u201d\u65b9\u5f0f\u767b\u5f55\uff0c\u7136\u540e\u5229\u7528oradebug\u6267\u884csystemstate\u7684dump\uff0c\u67e5\u770b\u5bfc\u81f4\u6570\u636e\u5e93HANG\u6b7b\u7684\u539f\u56e0\u3002 \u68c0\u67e5SYSTEMSTATE\u7684DUMP\u6587\u4ef6\uff0c\u53d1\u73b0PMON\u8fdb\u7a0b\u548c\u5927\u91cf\u7684DEAD\u8fdb\u7a0b\u90fd\u5728\u7ecf\u5386library cache: mutex X\u7b49\u5f85\u4e8b\u4ef6\u3002\u800c\u6574\u4e2aDUMP\u6587\u4ef6\u4e2dlibrary cache: mutex X\u7b49\u5f85\u4e8b\u4ef6\u51fa\u73b0\u4e863000\u591a\u6b21\u3002\u8fd9\u4e2a\u7b49\u5f85\u4e8b\u4ef6\u662f\u4e0d\u6b63\u5e38\u7684\u3002 \u67e5\u8be2MOS\u53d1\u73b0\u679c\u7136\u662fbug\uff1aBug 9312879 &#8220;library cache: mutex x&#8221; waits after killing sessions \/ PMON slow &hellip; <a href=\"https:\/\/yangtingkun.net\/?p=640\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[521,520,277,522],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2yiY3-ak","_links":{"self":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/640"}],"collection":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=640"}],"version-history":[{"count":1,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/640\/revisions"}],"predecessor-version":[{"id":643,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/640\/revisions\/643"}],"wp:attachment":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}