{"id":17622,"date":"2024-11-18T17:49:16","date_gmt":"2024-11-18T09:49:16","guid":{"rendered":"https:\/\/fwq.ai\/blog\/17622\/"},"modified":"2024-11-18T17:49:16","modified_gmt":"2024-11-18T09:49:16","slug":"oracle%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%e6%a3%80%e6%b5%8b%e8%a1%a8%e9%94%81%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/17622\/","title":{"rendered":"Oracle\u6570\u636e\u5e93\u4e2d\u68c0\u6d4b\u8868\u9501\u7684\u65b9\u6cd5"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/887\/227\/170973270676966.jpg\" class=\"aligncenter\" title=\"Oracle\u6570\u636e\u5e93\u4e2d\u68c0\u6d4b\u8868\u9501\u7684\u65b9\u6cd5\u63d2\u56fe\" alt=\"Oracle\u6570\u636e\u5e93\u4e2d\u68c0\u6d4b\u8868\u9501\u7684\u65b9\u6cd5\u63d2\u56fe\" \/><\/p>\n<p>\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u8868\u9501\u662f\u4e00\u79cd\u5bf9\u6570\u636e\u5e93\u8868\u8fdb\u884c\u52a0\u9501\u64cd\u4f5c\uff0c\u4ee5\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u8868\u9501\u5206\u4e3a\u5171\u4eab\u9501\u548c\u6392\u4ed6\u9501\uff0c\u5171\u4eab\u9501\u5141\u8bb8\u591a\u4e2a\u4f1a\u8bdd\u540c\u65f6\u8bfb\u53d6\u6570\u636e\uff0c\u4f46\u4e0d\u5141\u8bb8\u5176\u4ed6\u4f1a\u8bdd\u5bf9\u6570\u636e\u8fdb\u884c\u4fee\u6539\uff1b\u6392\u4ed6\u9501\u5219\u53ea\u5141\u8bb8\u4e00\u4e2a\u4f1a\u8bdd\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u5176\u4ed6\u4f1a\u8bdd\u65e0\u6cd5\u8bfb\u53d6\u6216\u4fee\u6539\u6570\u636e\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u68c0\u6d4b\u8868\u9501\u7684\u60c5\u51b5\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u987a\u5229\u8fdb\u884c\u3002<\/p>\n<p>\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\u6765\u68c0\u6d4b\u8868\u9501\uff1a<\/p>\n<ol>\n<li>\u4f7f\u7528DBA_LOCK\u89c6\u56fe\uff1a\u901a\u8fc7\u67e5\u8be2DBA_LOCK\u89c6\u56fe\uff0c\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u6240\u6709\u7684\u9501\u4fe1\u606f\uff0c\u5305\u62ec\u9501\u7684\u7c7b\u578b\u3001\u6301\u6709\u9501\u7684\u4f1a\u8bddID\u7b49\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u7801\uff1a<\/li>\n<\/ol>\n<pre>SELECT * FROM DBA_LOCK WHERE LOCK_TYPE = 'TM' AND MODE_HELD IS NOT NULL;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u6761\u67e5\u8be2\u8bed\u53e5\u53ef\u4ee5\u5217\u51fa\u5f53\u524d\u6240\u6709\u7684\u8868\u9501\u4fe1\u606f\uff0c\u5176\u4e2dLOCK_TYPE = &#8216;TM&#8217;\u8868\u793a\u8868\u9501\uff0cMODE_HELD IS NOT NULL\u8868\u793a\u5f53\u524d\u4f1a\u8bdd\u6301\u6709\u9501\u3002<\/p>\n<ol>\n<li>\u4f7f\u7528V$LOCK\u89c6\u56fe\uff1aV$LOCK\u89c6\u56fe\u5305\u542b\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u9501\u4fe1\u606f\uff0c\u901a\u8fc7\u67e5\u8be2\u8be5\u89c6\u56fe\u53ef\u4ee5\u67e5\u770b\u5177\u4f53\u7684\u9501\u4fe1\u606f\uff0c\u5305\u62ec\u9501\u7684\u7c7b\u578b\u3001\u6301\u6709\u9501\u7684\u4f1a\u8bddID\u7b49\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u7801\uff1a<\/li>\n<\/ol>\n<pre>SELECT * FROM V$LOCK WHERE TYPE = 'TM';<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u6761\u67e5\u8be2\u8bed\u53e5\u53ef\u4ee5\u5217\u51fa\u5f53\u524d\u6240\u6709\u7684\u8868\u9501\u4fe1\u606f\uff0c\u5176\u4e2dTYPE = &#8216;TM&#8217;\u8868\u793a\u8868\u9501\u3002<\/p>\n<ol>\n<li>\u4f7f\u7528DBA_BLOCKERS\u548cDBA_WAITERS\u89c6\u56fe\uff1a\u901a\u8fc7\u67e5\u8be2\u8fd9\u4e24\u4e2a\u89c6\u56fe\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u6240\u6709\u6b63\u5728\u88ab\u963b\u585e\u548c\u6b63\u5728\u7b49\u5f85\u9501\u7684\u4f1a\u8bdd\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u7801\uff1a<\/li>\n<\/ol>\n<pre>SELECT \/*+gather_plan_statistics*\/\n SHOLDING_SESSION SEQ POS TSYM LMODE REQUEST PCB\nFROM \n DBA_LOCK_INTERNAL A,\n DBA_LOCK_INTERNAL B,\n V$SESSION S1, \n V$SESSION S2\nWHERE \n A.SID1 = S1.SID AND\n B.SID1 = S2.SID AND\n S1.USERNAME IS NOT NULL AND\n S2.USERNAME IS NOT NULL AND\n A.SID1 = B.SID1 AND\n A.SID2 = B.SID2;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u901a\u8fc7\u5206\u6790DBA_BLOCKERS\u548cDBA_WAITERS\u89c6\u56fe\uff0c\u53ef\u4ee5\u4e86\u89e3\u54ea\u4e9b\u4f1a\u8bdd\u88ab\u9501\u963b\u585e\uff0c\u54ea\u4e9b\u4f1a\u8bdd\u6b63\u5728\u7b49\u5f85\u9501\u3002<\/p>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728Oracle\u6570\u636e\u5e93\u4e2d\u68c0\u6d4b\u8868\u9501\u7684\u60c5\u51b5\uff0c\u53ca\u65f6\u53d1\u73b0\u5e76\u89e3\u51b3\u6f5c\u5728\u7684\u9501\u51b2\u7a81\u95ee\u9898\uff0c\u4fdd\u969c\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u6b63\u5e38\u8fdb\u884c\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fOracle\u6570\u636e\u5e93\u4e2d\u68c0\u6d4b\u8868\u9501\u7684\u65b9\u6cd5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u8868\u9501\u662f\u4e00\u79cd\u5bf9\u6570\u636e\u5e93\u8868\u8fdb\u884c\u52a0\u9501\u64cd\u4f5c\uff0c\u4ee5\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u8868\u9501\u5206\u4e3a\u5171\u4eab\u9501\u548c\u6392\u4ed6\u9501\uff0c\u5171\u4eab\u9501\u5141\u8bb8\u591a\u4e2a\u4f1a\u8bdd\u540c\u65f6\u8bfb\u53d6\u6570\u636e\uff0c\u4f46\u4e0d\u5141\u8bb8\u5176\u4ed6\u4f1a\u8bdd\u5bf9\u6570\u636e\u8fdb\u884c\u4fee\u6539\uff1b\u6392\u4ed6\u9501\u5219\u53ea\u5141\u8bb8\u4e00\u4e2a\u4f1a\u8bdd\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u5176\u4ed6\u4f1a\u8bdd\u65e0\u6cd5\u8bfb\u53d6\u6216\u4fee\u6539\u6570\u636e\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u68c0\u6d4b\u8868\u9501\u7684\u60c5\u51b5\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u987a\u5229\u8fdb\u884c\u3002 \u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\u6765\u68c0\u6d4b\u8868\u9501\uff1a \u4f7f\u7528DBA_LOCK\u89c6\u56fe\uff1a\u901a\u8fc7\u67e5\u8be2DBA_LOCK\u89c6\u56fe\uff0c\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u6240\u6709\u7684\u9501\u4fe1\u606f\uff0c\u5305\u62ec\u9501\u7684\u7c7b\u578b\u3001\u6301\u6709\u9501\u7684\u4f1a\u8bddID\u7b49\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u7801\uff1a SELECT * FROM DBA_LOCK WHERE LOCK_TYPE = &#8216;TM&#8217; AND MODE_HELD IS NOT NULL; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u6761\u67e5\u8be2\u8bed\u53e5\u53ef\u4ee5\u5217\u51fa\u5f53\u524d\u6240\u6709\u7684\u8868\u9501\u4fe1\u606f\uff0c\u5176\u4e2dLOCK_TYPE = &#8216;TM&#8217;\u8868\u793a\u8868\u9501\uff0cMODE_HELD IS NOT NULL\u8868\u793a\u5f53\u524d\u4f1a\u8bdd\u6301\u6709\u9501\u3002 \u4f7f\u7528V$LOCK\u89c6\u56fe\uff1aV$LOCK\u89c6\u56fe\u5305\u542b\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u9501\u4fe1\u606f\uff0c\u901a\u8fc7\u67e5\u8be2\u8be5\u89c6\u56fe\u53ef\u4ee5\u67e5\u770b\u5177\u4f53\u7684\u9501\u4fe1\u606f\uff0c\u5305\u62ec\u9501\u7684\u7c7b\u578b\u3001\u6301\u6709\u9501\u7684\u4f1a\u8bddID\u7b49\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u7801\uff1a SELECT * FROM V$LOCK WHERE TYPE = &#8216;TM&#8217;; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u6761\u67e5\u8be2\u8bed\u53e5\u53ef\u4ee5\u5217\u51fa\u5f53\u524d\u6240\u6709\u7684\u8868\u9501\u4fe1\u606f\uff0c\u5176\u4e2dTYPE = &#8216;TM&#8217;\u8868\u793a\u8868\u9501\u3002 \u4f7f\u7528DBA_BLOCKERS\u548cDBA_WAITERS\u89c6\u56fe\uff1a\u901a\u8fc7\u67e5\u8be2\u8fd9\u4e24\u4e2a\u89c6\u56fe\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u6240\u6709\u6b63\u5728\u88ab\u963b\u585e\u548c\u6b63\u5728\u7b49\u5f85\u9501\u7684\u4f1a\u8bdd\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u7801\uff1a SELECT \/*+gather_plan_statistics*\/ SHOLDING_SESSION SEQ POS TSYM LMODE REQUEST PCB FROM DBA_LOCK_INTERNAL A, DBA_LOCK_INTERNAL B, V$SESSION S1, V$SESSION S2 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-17622","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/17622","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=17622"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/17622\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=17622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=17622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=17622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}