{"id":199965,"date":"2025-05-06T08:33:04","date_gmt":"2025-05-06T00:33:04","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199965\/"},"modified":"2025-05-06T08:33:04","modified_gmt":"2025-05-06T00:33:04","slug":"%e5%a6%82%e4%bd%95%e6%a3%80%e6%b5%8boracle%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%e8%a1%a8%e6%98%af%e5%90%a6%e8%a2%ab%e9%94%81%e5%ae%9a%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199965\/","title":{"rendered":"\u5982\u4f55\u68c0\u6d4bOracle\u6570\u636e\u5e93\u4e2d\u8868\u662f\u5426\u88ab\u9501\u5b9a\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5982\u4f55\u68c0\u6d4bOracle\u6570\u636e\u5e93\u4e2d\u8868\u662f\u5426\u88ab\u9501\u5b9a\uff1f<\/h1>\n<\/p>\n<p>\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u8868\u88ab\u9501\u5b9a\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u60c5\u51b5\uff0c\u5982\u4f55\u8bc6\u522b\u5e76\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u662f\u6570\u636e\u5e93\u7ba1\u7406\u5458\u7ecf\u5e38\u9762\u4e34\u7684\u6311\u6218\u4e4b\u4e00\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u8bc6\u522bOracle\u6570\u636e\u5e93\u4e2d\u8868\u88ab\u9501\u5b9a\u7684\u60c5\u51b5\uff0c\u5e76\u7ed9\u51fa\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u4ee5\u5e2e\u52a9\u6570\u636e\u5e93\u7ba1\u7406\u5458\u5feb\u901f\u5b9a\u4f4d\u548c\u89e3\u51b3\u8868\u88ab\u9501\u5b9a\u7684\u95ee\u9898\u3002<\/p>\n<p>\u4e00\u3001\u5982\u4f55\u8bc6\u522b\u8868\u88ab\u9501\u5b9a\u7684\u60c5\u51b5\uff1f<\/p>\n<p>1.\u67e5\u770bV$LOCK\u89c6\u56fe<br \/>V$LOCK\u89c6\u56fe\u662fOracle\u6570\u636e\u5e93\u4e2d\u7528\u6765\u67e5\u770b\u9501\u5b9a\u4fe1\u606f\u7684\u4e00\u4e2a\u91cd\u8981\u89c6\u56fe\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u67e5\u8be2V$LOCK\u89c6\u56fe\u6765\u67e5\u770b\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u5b58\u5728\u7684\u9501\u4fe1\u606f\uff0c\u5305\u62ec\u9501\u7684\u7c7b\u578b\u3001\u6301\u6709\u8005\u4f1a\u8bddID\u3001\u9501\u5b9a\u7684\u5bf9\u8c61\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u67e5\u8be2\u793a\u4f8b\uff1a<\/p>\n<pre>SELECT * FROM V$LOCK WHERE TYPE = 'TM';<\/pre>\n<p>\u8fd9\u6761SQL\u8bed\u53e5\u4f1a\u67e5\u8be2\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u6240\u6709\u7684\u8868\u7ea7\u9501\u4fe1\u606f\u3002<\/p>\n<p>2.\u67e5\u770bDBA_BLOCKERS\u548cDBA_WAITERS\u89c6\u56fe<br \/>DBA_BLOCKERS\u548cDBA_WAITERS\u89c6\u56fe\u662f\u7528\u6765\u67e5\u770b\u6570\u636e\u5e93\u4e2d\u5b58\u5728\u7684\u9501\u51b2\u7a81\u7684\u89c6\u56fe\u3002DBA_BLOCKERS\u89c6\u56fe\u663e\u793a\u5f53\u524d\u4f1a\u8bddID\u9501\u4f4f\u7684\u5bf9\u8c61\uff0c\u800cDBA_WAITERS\u89c6\u56fe\u663e\u793a\u5f53\u524d\u6b63\u5728\u7b49\u5f85\u9501\u91ca\u653e\u7684\u4f1a\u8bddID\u3002\u901a\u8fc7\u8fd9\u4e24\u4e2a\u89c6\u56fe\u7684\u67e5\u8be2\uff0c\u6211\u4eec\u53ef\u4ee5\u6e05\u6670\u5730\u4e86\u89e3\u54ea\u4e9b\u4f1a\u8bdd\u6b63\u5728\u963b\u585e\u5176\u4ed6\u4f1a\u8bdd\u6216\u8005\u88ab\u5176\u4ed6\u4f1a\u8bdd\u963b\u585e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u67e5\u8be2\u793a\u4f8b\uff1a<\/p>\n<pre>SELECT * FROM DBA_BLOCKERS;\nSELECT * FROM DBA_WAITERS;<\/pre>\n<p>\u4e8c\u3001\u5177\u4f53\u4ee3\u7801\u793a\u4f8b<\/p>\n<p>\u4e0b\u9762\u7ed9\u51fa\u4e00\u4e2a\u5b9e\u9645\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u4ee5\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u8bc6\u522bOracle\u6570\u636e\u5e93\u4e2d\u8868\u88ab\u9501\u5b9a\u7684\u60c5\u51b5\u3002<\/p>\n<pre>--\u521b\u5efa\u4e00\u4e2a\u8868\u5e76\u63d2\u5165\u6570\u636e\nCREATE TABLE test_table (\n    id NUMBER PRIMARY KEY,\n    name VARCHAR2(50)\n);\nINSERT INTO test_table VALUES (1, 'Alice');\nCOMMIT;\n\n--\u5728\u4e00\u4e2a\u4f1a\u8bdd\u4e2d\u9501\u5b9a\u8868\nSTART TRANSACTION;\nLOCK TABLE test_table IN EXCLUSIVE MODE NOWAIT;\n\n--\u5728\u53e6\u4e00\u4e2a\u4f1a\u8bdd\u4e2d\u67e5\u770b\u9501\u5b9a\u4fe1\u606f\nSELECT * FROM V$LOCK WHERE TYPE = 'TM';\nSELECT * FROM DBA_BLOCKERS;\nSELECT * FROM DBA_WAITERS;\n\n--\u5728\u7b2c\u4e00\u4e2a\u4f1a\u8bdd\u4e2d\u91ca\u653e\u9501\nCOMMIT;<\/pre>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u4ee3\u7801\u793a\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u6e05\u6670\u5730\u770b\u5230\u5982\u4f55\u5728Oracle\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u8868\u3001\u63d2\u5165\u6570\u636e\uff0c\u5e76\u8fdb\u884c\u8868\u7ea7\u9501\u5b9a\u64cd\u4f5c\u3002\u901a\u8fc7\u67e5\u8be2V$LOCK\u3001DBA_BLOCKERS\u548cDBA_WAITERS\u89c6\u56fe\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u67e5\u770b\u8868\u88ab\u9501\u5b9a\u7684\u60c5\u51b5\uff0c\u5e76\u8fdb\u4e00\u6b65\u5206\u6790\u9501\u5b9a\u4fe1\u606f\u3002\u5728\u8bc6\u522b\u5230\u8868\u88ab\u9501\u5b9a\u7684\u60c5\u51b5\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u91ca\u653e\u9501\u6216\u8005\u7ec8\u6b62\u4f1a\u8bdd\u7b49\u65b9\u5f0f\u6765\u89e3\u51b3\u8868\u88ab\u9501\u5b9a\u7684\u95ee\u9898\u3002<\/p>\n<p>\u603b\u7ed3\uff1a\u8bc6\u522bOracle\u6570\u636e\u5e93\u4e2d\u8868\u88ab\u9501\u5b9a\u7684\u60c5\u51b5\u662f\u6570\u636e\u5e93\u7ba1\u7406\u4e2d\u7684\u4e00\u4e2a\u5e38\u89c1\u4efb\u52a1\uff0c\u901a\u8fc7\u67e5\u8be2V$LOCK\u3001DBA_BLOCKERS\u548cDBA_WAITERS\u89c6\u56fe\uff0c\u4ee5\u53ca\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6570\u636e\u5e93\u7ba1\u7406\u5458\u5feb\u901f\u51c6\u786e\u5730\u5b9a\u4f4d\u548c\u89e3\u51b3\u8868\u88ab\u9501\u5b9a\u7684\u95ee\u9898\uff0c\u4fdd\u969c\u6570\u636e\u5e93\u7cfb\u7edf\u7684\u7a33\u5b9a\u8fd0\u884c\u3002<\/p>\n<p>\u672c\u7bc7\u5173\u4e8e\u300a\u5982\u4f55\u68c0\u6d4bOracle\u6570\u636e\u5e93\u4e2d\u8868\u662f\u5426\u88ab\u9501\u5b9a\uff1f\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6570\u636e\u5e93\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u68c0\u6d4bOracle\u6570\u636e\u5e93\u4e2d\u8868\u662f&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-199965","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199965","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=199965"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199965\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199965"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199965"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199965"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}