{"id":1213,"date":"2012-09-24T23:46:55","date_gmt":"2012-09-24T15:46:55","guid":{"rendered":"https:\/\/yangtingkun.net\/?p=1213"},"modified":"2012-11-18T20:57:09","modified_gmt":"2012-11-18T12:57:09","slug":"%e7%b3%bb%e7%bb%9f%e5%87%ba%e7%8e%b0cursor-mutex-x%e7%ad%89%e5%be%85%e5%af%bc%e8%87%b4%e5%ae%9e%e4%be%8bhang%e6%ad%bb","status":"publish","type":"post","link":"https:\/\/yangtingkun.net\/?p=1213","title":{"rendered":"\u7cfb\u7edf\u51fa\u73b0cursor: mutex X\u7b49\u5f85\u5bfc\u81f4\u5b9e\u4f8bHANG\u6b7b"},"content":{"rendered":"

\u5ba2\u6237\u6570\u636e\u5e93\u51fa\u73b0\u660e\u663e\u7684cursor: mutex X\u7b49\u5f85\uff0c\u5c1d\u8bd5\u901a\u8fc7ALTER SYSTEM KILL SESSION\u7684\u65b9\u5f0f\u91ca\u653e\u7b49\u5f85\u7684\u4f1a\u8bdd\uff0c\u7ed3\u679c\u5bfc\u81f4\u6574\u4e2a\u5b9e\u4f8b\u51fa\u73b0HANG\u6b7b\u7684\u60c5\u51b5\u3002<\/p>\n

\u6570\u636e\u5e93\u7248\u672c\u4e3a10.2.0.4\uff0c\u68c0\u67e5\u6570\u636e\u5e93\u95ee\u9898\u53d1\u751f\u65f6\u523b\u7684AWR\u62a5\u544a\uff0c\u53d1\u73b0cursor: mutex X\u7b49\u5f85\u5728AWR\u62a5\u544a\u4e2d\u5e76\u4e0d\u660e\u663e\uff0c\u4e0d\u4f46\u6ca1\u6709\u51fa\u73b0\u5728TOP 5\u91cc\uff0c\u800c\u5728\u6574\u4e2a\u7b49\u5f85\u4e8b\u4ef6\u7684\u6392\u540d\u4e2d\u4e5f\u6392\u5728\u975e\u5e38\u9760\u540e\u7684\u4f4d\u7f6e\uff0c\u4e14\u8be5\u4e8b\u4ef6\u7684\u603b\u7b49\u5f85\u65f6\u95f4\u4e3a0\uff0c\u8fd9\u4e0e\u5ba2\u6237\u53cd\u9988\u7684\u5927\u7ea670\u591a\u4e2a\u4f1a\u8bdd\u6301\u7eed\u7b49\u5f85cursor: mutex X\u4e8b\u4ef6\u7684\u63cf\u8ff0\u6781\u4e3a\u4e0d\u7b26\u3002
\n\u5bfc\u81f4\u8fd9\u4e2a\u73b0\u8c61\u7684\u539f\u56e0\u53ef\u80fd\u6709\u4e24\u79cd\uff0c\u4e00\u79cd\u662f\u867d\u7136\u4eceV$SESSION\u4e2d\u770b\u5230\u5f53\u524d\u7684\u7b49\u5f85\u662fcursor :mutex X\u4e8b\u4ef6\uff0c\u4f46\u662f\u8be5\u4e8b\u4ef6\u5df2\u7ecf\u7ed3\u675f\uff0c\u56e0\u6b64\u4f1a\u8bdd\u7684\u7b49\u5f85\u65f6\u95f4\u5e76\u672a\u8bb0\u5f55\u5e76\u6c47\u603b\u5230\u8fd9\u4e2a\u4e8b\u4ef6\u7684\u7b49\u5f85\u65f6\u95f4\u4e2d\uff1b\u53e6\u5916\u4e00\u79cd\u60c5\u51b5\u662fOracle\u5bf9\u4e8e\u8fd9\u4e2a\u4e8b\u4ef6\u7684\u7edf\u8ba1\u503c\u5b58\u5728\u9519\u8bef\u3002
\n\u7ee7\u7eed\u5206\u6790AWR\u62a5\u544a\uff0c\u53ef\u4ee5\u53d1\u73b0VERSION COUNT\u62a5\u544a\u4e2d\uff0c\u6700\u9ad8\u7684\u4e24\u4e2aSQL\u5df2\u7ecf\u8fdc\u8fdc\u8d85\u8fc7\u4e86\u6b63\u5e38\u7684\u8303\u56f4\uff0c\u8fbe\u5230\u4e8613W\u4ee5\u4e0a\uff0c\u6beb\u65e0\u7591\u95ee\u8fd9\u80af\u5b9a\u4e0d\u6b63\u5e38\u7684\u60c5\u51b5\u6240\u81f4\uff1a<\/p>\n

\n\n\n\n\n\n\n\n\n
\n

Version Count <\/strong><\/p>\n<\/td>\n

\n

Executions <\/strong><\/p>\n<\/td>\n

\n

SQL Id<\/strong><\/p>\n<\/td>\n

\n

SQL Module<\/strong><\/p>\n<\/td>\n

\n

SQL Text<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

150,649<\/p>\n<\/td>\n

<\/td>\n\n

7q1tdx7ysmg6f<\/strong><\/a><\/p>\n<\/td>\n

<\/td>\n\n

** SQL Text Not Available **<\/p>\n<\/td>\n<\/tr>\n

\n

134,787<\/p>\n<\/td>\n

<\/td>\n\n

fa3vfvs859n5n<\/strong><\/a><\/p>\n<\/td>\n

<\/td>\n\n

** SQL Text Not Available **<\/p>\n<\/td>\n<\/tr>\n

\n

10,732<\/p>\n<\/td>\n

<\/td>\n\n

gr0wk1tf0npm4<\/strong><\/a><\/p>\n<\/td>\n

<\/td>\n\n

select count(:”SYS_B_0″) as ro…<\/p>\n<\/td>\n<\/tr>\n

\n

6,547<\/p>\n<\/td>\n

<\/td>\n\n

6r91qu3knm3vz<\/strong><\/a><\/p>\n<\/td>\n

<\/td>\n\n

** SQL Text Not Available **<\/p>\n<\/td>\n<\/tr>\n

\n

5,888<\/p>\n<\/td>\n

<\/td>\n\n

36ft4hmuru5d2<\/strong><\/a><\/p>\n<\/td>\n

<\/td>\n\n

** SQL Text Not Available **<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u6392\u5728\u7b2c3\u548c\u7b2c4\u4f4d\u7684VERSION COUNT\u8fbe\u52305000\u4ee5\u4e0a\u5c31\u5df2\u7ecf\u4e0d\u592a\u6b63\u5e38\u4e86\uff0c\u4f55\u51b5\u6700\u9ad8\u7684\u4e24\u6761\u8bed\u53e5\u7684\u503c\u5df2\u7ecf\u8d85\u8fc7\u4e8613W\uff0c\u4e0d\u7528\u8bf4\u8fd9\u4e24\u6761\u8bed\u53e5\u4f1a\u5360\u7528\u5927\u91cf\u7684\u5171\u4eab\u6c60\u7a7a\u95f4\uff1a<\/p>\n

\n\n\n\n\n\n\n\n\n
\n

Sharable Mem (b)<\/strong><\/p>\n<\/td>\n

\n

Executions <\/strong><\/p>\n<\/td>\n

\n

% Total<\/strong><\/p>\n<\/td>\n

\n

SQL Id<\/strong><\/p>\n<\/td>\n

\n

SQL Module<\/strong><\/p>\n<\/td>\n

\n

SQL Text<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

3,082,390,224<\/p>\n<\/td>\n

<\/td>\n\n

28.84<\/p>\n<\/td>\n

\n

7q1tdx7ysmg6f<\/strong><\/a><\/p>\n<\/td>\n

<\/td>\n\n

** SQL Text Not Available **<\/p>\n<\/td>\n<\/tr>\n

\n

2,902,320,992<\/p>\n<\/td>\n

<\/td>\n\n

27.16<\/p>\n<\/td>\n

\n

fa3vfvs859n5n<\/strong><\/a><\/p>\n<\/td>\n

<\/td>\n\n

** SQL Text Not Available **<\/p>\n<\/td>\n<\/tr>\n

\n

174,014,440<\/p>\n<\/td>\n

<\/td>\n\n

1.63<\/p>\n<\/td>\n

\n

gr0wk1tf0npm4<\/strong><\/a><\/p>\n<\/td>\n

<\/td>\n\n

select count(:”SYS_B_0″) as ro…<\/p>\n<\/td>\n<\/tr>\n

\n

126,804,120<\/p>\n<\/td>\n

<\/td>\n\n

1.19<\/p>\n<\/td>\n

\n

36ft4hmuru5d2<\/strong><\/a><\/p>\n<\/td>\n

<\/td>\n\n

** SQL Text Not Available **<\/p>\n<\/td>\n<\/tr>\n

\n

106,961,832<\/p>\n<\/td>\n

<\/td>\n\n

1.00<\/p>\n<\/td>\n

\n

6r91qu3knm3vz<\/strong><\/a><\/p>\n<\/td>\n

<\/td>\n\n

** SQL Text Not Available **<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u679c\u7136\u4e0d\u51fa\u6240\u6599\uff0c\u6bcf\u4e2a\u95ee\u9898SQL\u5360\u7528\u7684\u5171\u4eab\u6c60\u7a7a\u95f4\u90fd\u8fbe\u5230\u4e863G\u5de6\u53f3\u3002
\n\u663e\u7136\u5bfc\u81f4\u5f53\u524dcursor: mutex X\u7684\u95ee\u9898\u80af\u5b9a\u548c\u8fd9\u4e24\u4e2aSQL\u76f4\u63a5\u76f8\u5173\uff0c\u6700\u540e\u901a\u8fc7ASH\u89c6\u56fe\u9a8c\u8bc1\u4e00\u4e0b\u8fd9\u4e2a\u5224\u65ad\uff1a<\/p>\n

SQL> select to_char(sample_time, 'yyyy-mm-dd hh24:mi:ss.ff'), session_id, event_name, sql_id\r\n  2  from wrh$_active_session_history ash, wrh$_event_name en\r\n  3  where ash.dbid = 1944025784\r\n  4  and en.dbid = 1944025784\r\n  5  and ash.event_id = en.event_id(+)\r\n  6  and event_name like '%mutex%'\r\n  7  and sample_timeselect sql_id, count(*)\r\n  2  from wrh$_active_session_history ash, wrh$_event_name en\r\n  3  where ash.dbid = 1944025784\r\n  4  and en.dbid = 1944025784\r\n  5  and ash.event_id = en.event_id(+)\r\n  6  and event_name like '%mutex%'\r\n  7  and sample_time<\/pre>\n
\u5f88\u660e\u663e\uff0c\u5bfc\u81f4\u7cfb\u7edf\u51fa\u73b0cursor: mutex X\u7b49\u5f85\u7684\u5c31\u662fAWR\u62a5\u544a\u4e2d\u770b\u5230\u7684\u4e24\u4e2a\u8bed\u53e5\uff0c\u6b63\u662f\u8fd9\u4e24\u4e2a\u8bed\u53e5\u4e0d\u65ad\u7684\u4ea7\u751f\u65b0\u7684VERSION\uff0c\u5bfc\u81f4\u4e86cursor: mutex X\u4e8b\u4ef6\uff0c\u5e76\u5360\u7528\u8d8a\u6765\u8d8a\u591a\u7684\u5171\u4eab\u6c60\u7a7a\u95f4\uff0c\u6700\u7ec8\u5bfc\u81f4\u6574\u4e2a\u6570\u636e\u5e93\u51fa\u73b0\u4e86HANG\u6b7b\u7684\u60c5\u51b5\u3002
\n\u6839\u636e\u5206\u6790\u5bfc\u81f4\u8fd9\u4e2a\u95ee\u9898\u7684\u6700\u76f4\u63a5\u7684\u539f\u56e0\u662f\u521d\u59cb\u5316\u53c2\u6570CURSOR_SHARING\u8bbe\u7f6e\u4e3aSIMILAR\u3002\u800cCURSOR_SHARING\u8bbe\u7f6e\u4e3aSIMILAR\u4ece\u800c\u5bfc\u81f4VERSION COUNT\u8fc7\u5927\u7684\u95ee\u9898\u5df2\u7ecf\u6709\u8fc7\u5f88\u591a\u6848\u4f8b\u4e86\uff0c\u5bf9\u4e8e\u5f53\u524d\u7684\u6570\u636e\u5e93\u800c\u8a00\uff0c\u8981\u60f3\u5f7b\u5e95\u907f\u514d\u8fd9\u4e2a\u95ee\u9898\uff0c\u9664\u4e86\u5347\u7ea7\u5230\u6700\u9ad8\u768410.2.0.5.6\u4ee5\u5916\uff0c\u5c31\u662f\u901a\u8fc7\u6539\u53d8CURSOR_SHARING\u7684\u8bbe\u7f6e\u3002\u663e\u7136EXACT\u662f\u6700\u4f73\u65b9\u6848\uff0c\u4f46\u662f\u8fd9\u5fc5\u987b\u540c\u65f6\u4fee\u6539\u7a0b\u5e8f\u4f7f\u7528\u7ed1\u5b9a\u53d8\u91cf\uff0c\u624d\u80fd\u907f\u514d\u7531\u4e8e\u53c2\u6570\u4fee\u6539\u5e26\u6765\u7684\u786c\u89e3\u6790\u7684\u95ee\u9898\u3002\u6b64\u5916\u4fee\u6539\u4e3aFORCE\u4e5f\u662f\u4e00\u4e2a\u9009\u62e9\uff0c\u4e0d\u8fc7\u8fd9\u9700\u8981\u5728\u6d4b\u8bd5\u73af\u5883\u4e2d\u8fdb\u884c\u9a8c\u8bc1\uff0c\u907f\u514d\u6b64\u4fee\u6539\u5e26\u6765\u7684\u6027\u80fd\u95ee\u9898\u548c\u5176\u4ed6BUG\u7684\u98ce\u9669\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5ba2\u6237\u6570\u636e\u5e93\u51fa\u73b0\u660e\u663e\u7684cursor: mutex X\u7b49\u5f85\uff0c\u5c1d\u8bd5\u901a\u8fc7ALTER SYSTEM KILL SESSION\u7684\u65b9\u5f0f\u91ca\u653e\u7b49\u5f85\u7684\u4f1a\u8bdd\uff0c\u7ed3\u679c\u5bfc\u81f4\u6574\u4e2a\u5b9e\u4f8b\u51fa\u73b0HANG\u6b7b\u7684\u60c5\u51b5\u3002 \u6570\u636e\u5e93\u7248\u672c\u4e3a10.2.0.4\uff0c\u68c0\u67e5\u6570\u636e\u5e93\u95ee\u9898\u53d1\u751f\u65f6\u523b\u7684AWR\u62a5\u544a\uff0c\u53d1\u73b0cursor: mutex X\u7b49\u5f85\u5728AWR\u62a5\u544a\u4e2d\u5e76\u4e0d\u660e\u663e\uff0c\u4e0d\u4f46\u6ca1\u6709\u51fa\u73b0\u5728TOP 5\u91cc\uff0c\u800c\u5728\u6574\u4e2a\u7b49\u5f85\u4e8b\u4ef6\u7684\u6392\u540d\u4e2d\u4e5f\u6392\u5728\u975e\u5e38\u9760\u540e\u7684\u4f4d\u7f6e\uff0c\u4e14\u8be5\u4e8b\u4ef6\u7684\u603b\u7b49\u5f85\u65f6\u95f4\u4e3a0\uff0c\u8fd9\u4e0e\u5ba2\u6237\u53cd\u9988\u7684\u5927\u7ea670\u591a\u4e2a\u4f1a\u8bdd\u6301\u7eed\u7b49\u5f85cursor: mutex X\u4e8b\u4ef6\u7684\u63cf\u8ff0\u6781\u4e3a\u4e0d\u7b26\u3002 \u5bfc\u81f4\u8fd9\u4e2a\u73b0\u8c61\u7684\u539f\u56e0\u53ef\u80fd\u6709\u4e24\u79cd\uff0c\u4e00\u79cd\u662f\u867d\u7136\u4eceV$SESSION\u4e2d\u770b\u5230\u5f53\u524d\u7684\u7b49\u5f85\u662fcursor :mutex X\u4e8b\u4ef6\uff0c\u4f46\u662f\u8be5\u4e8b\u4ef6\u5df2\u7ecf\u7ed3\u675f\uff0c\u56e0\u6b64\u4f1a\u8bdd\u7684\u7b49\u5f85\u65f6\u95f4\u5e76\u672a\u8bb0\u5f55\u5e76\u6c47\u603b\u5230\u8fd9\u4e2a\u4e8b\u4ef6\u7684\u7b49\u5f85\u65f6\u95f4\u4e2d\uff1b\u53e6\u5916\u4e00\u79cd\u60c5\u51b5\u662fOracle\u5bf9\u4e8e\u8fd9\u4e2a\u4e8b\u4ef6\u7684\u7edf\u8ba1\u503c\u5b58\u5728\u9519\u8bef\u3002 \u7ee7\u7eed\u5206\u6790AWR\u62a5\u544a\uff0c\u53ef\u4ee5\u53d1\u73b0VERSION COUNT\u62a5\u544a\u4e2d\uff0c\u6700\u9ad8\u7684\u4e24\u4e2aSQL\u5df2\u7ecf\u8fdc\u8fdc\u8d85\u8fc7\u4e86\u6b63\u5e38\u7684\u8303\u56f4\uff0c\u8fbe\u5230\u4e8613W\u4ee5\u4e0a\uff0c\u6beb\u65e0\u7591\u95ee\u8fd9\u80af\u5b9a\u4e0d\u6b63\u5e38\u7684\u60c5\u51b5\u6240\u81f4\uff1a Version Count Executions SQL Id SQL Module SQL Text 150,649 7q1tdx7ysmg6f ** SQL Text Not Available ** 134,787 fa3vfvs859n5n ** SQL Text Not … Continue reading →<\/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":[3],"tags":[1071,1068,521,1069,1070],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2yiY3-jz","_links":{"self":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/1213"}],"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=1213"}],"version-history":[{"count":2,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/1213\/revisions"}],"predecessor-version":[{"id":1215,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/1213\/revisions\/1215"}],"wp:attachment":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1213"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1213"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1213"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}