{"id":64959,"date":"2024-10-14T13:02:14","date_gmt":"2024-10-14T05:02:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/64959\/"},"modified":"2024-10-14T13:02:14","modified_gmt":"2024-10-14T05:02:14","slug":"mssql%e5%84%b2%e5%ad%98%e9%81%8e%e7%a8%8b%e4%b8%ad%e7%9a%84%e9%8e%96%e6%8a%80%e8%a1%93%e7%a0%94%e7%a9%b6%ef%bc%88mssql%e5%84%b2%e5%ad%98%e9%81%8e%e7%a8%8b%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/64959\/","title":{"rendered":"MSSQL\u5132\u5b58\u904e\u7a0b\u4e2d\u7684\u9396\u6280\u8853\u7814\u7a76\uff08mssql\u5132\u5b58\u904e\u7a0b\u9396\uff09"},"content":{"rendered":"<h1 id=\"mssql%e5%84%b2%e5%ad%98%e9%81%8e%e7%a8%8b%e4%b8%ad%e7%9a%84%e9%8e%96%e6%8a%80%e8%a1%93%e7%a0%94%e7%a9%b6%ef%bc%88mssql%e5%84%b2%e5%ad%98%e9%81%8e%e7%a8%8b%e9%8e%96%ef%bc%89-KdZnEEKMes\">MSSQL\u5132\u5b58\u904e\u7a0b\u4e2d\u7684\u9396\u6280\u8853\u7814\u7a76\uff08mssql\u5132\u5b58\u904e\u7a0b\u9396\uff09<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u9396\u6280\u8853\u662f\u78ba\u4fdd\u8cc7\u6599\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u7684\u91cd\u8981\u6a5f\u5236\u3002\u7279\u5225\u662f\u5728 Microsoft SQL Server (MSSQL) \u4e2d\uff0c\u5132\u5b58\u904e\u7a0b\u7684\u57f7\u884c\u904e\u7a0b\u4e2d\uff0c\u9396\u7684\u7ba1\u7406\u5c0d\u65bc\u591a\u7528\u6236\u74b0\u5883\u4e0b\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e MSSQL \u5132\u5b58\u904e\u7a0b\u4e2d\u7684\u9396\u6280\u8853\uff0c\u4e26\u5206\u6790\u5176\u5c0d\u8cc7\u6599\u5eab\u64cd\u4f5c\u7684\u5f71\u97ff\u3002<\/p>\n<h2 id=\"%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-KdZnEEKMes\">\u9396\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u9396\u662f\u7528\u4f86\u63a7\u5236\u5c0d\u8cc7\u6599\u7684\u5b58\u53d6\uff0c\u9632\u6b62\u591a\u500b\u7528\u6236\u540c\u6642\u4fee\u6539\u76f8\u540c\u7684\u8cc7\u6599\u800c\u5c0e\u81f4\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u3002MSSQL \u4e2d\u7684\u9396\u53ef\u4ee5\u5206\u70ba\u5e7e\u7a2e\u985e\u578b\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5171\u4eab\u9396\uff08S Lock\uff09<\/strong>\uff1a\u5141\u8a31\u591a\u500b\u4e8b\u52d9\u540c\u6642\u8b80\u53d6\u8cc7\u6599\uff0c\u4f46\u4e0d\u5141\u8a31\u4fee\u6539\u3002<\/li>\n<li><strong>\u6392\u4ed6\u9396\uff08X Lock\uff09<\/strong>\uff1a\u53ea\u5141\u8a31\u4e00\u500b\u4e8b\u52d9\u5c0d\u8cc7\u6599\u9032\u884c\u4fee\u6539\uff0c\u5176\u4ed6\u4e8b\u52d9\u7121\u6cd5\u8b80\u53d6\u6216\u4fee\u6539\u3002<\/li>\n<li><strong>\u66f4\u65b0\u9396\uff08U Lock\uff09<\/strong>\uff1a\u7528\u65bc\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\uff0c\u7576\u4e8b\u52d9\u9700\u8981\u66f4\u65b0\u8cc7\u6599\u6642\u6703\u5148\u7372\u5f97\u66f4\u65b0\u9396\u3002<\/li>\n<\/ul>\n<h2 id=\"mssql-%e5%84%b2%e5%ad%98%e9%81%8e%e7%a8%8b%e4%b8%ad%e7%9a%84%e9%8e%96%e7%ae%a1%e7%90%86-KdZnEEKMes\">MSSQL \u5132\u5b58\u904e\u7a0b\u4e2d\u7684\u9396\u7ba1\u7406<\/h2>\n<p>\u5728 MSSQL \u4e2d\uff0c\u5132\u5b58\u904e\u7a0b\u662f\u4e00\u7d44\u9810\u7de8\u8b6f\u7684 SQL \u8a9e\u53e5\uff0c\u9019\u4e9b\u8a9e\u53e5\u53ef\u4ee5\u88ab\u591a\u6b21\u57f7\u884c\u3002\u7576\u5132\u5b58\u904e\u7a0b\u57f7\u884c\u6642\uff0c\u7cfb\u7d71\u6703\u81ea\u52d5\u7ba1\u7406\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5f71\u97ff\u5132\u5b58\u904e\u7a0b\u9396\u7684\u56e0\u7d20\uff1a<\/p>\n<h3 id=\"1-%e4%ba%8b%e5%8b%99%e7%9a%84%e7%af%84%e5%9c%8d-KdZnEEKMes\">1. \u4e8b\u52d9\u7684\u7bc4\u570d<\/h3>\n<p>\u4e8b\u52d9\u7684\u7bc4\u570d\u6c7a\u5b9a\u4e86\u9396\u7684\u6301\u6709\u6642\u9593\u3002\u8f03\u9577\u7684\u4e8b\u52d9\u7bc4\u570d\u6703\u5c0e\u81f4\u9396\u6301\u6709\u6642\u9593\u5ef6\u9577\uff0c\u5f9e\u800c\u5f71\u97ff\u5176\u4ed6\u4e8b\u52d9\u7684\u57f7\u884c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>\nBEGIN TRANSACTION;\n    -- \u57f7\u884c\u4e00\u4e9b\u64cd\u4f5c\nCOMMIT;\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u9396\u6703\u5728\u6574\u500b\u4e8b\u52d9\u671f\u9593\u6301\u6709\uff0c\u76f4\u5230\u63d0\u4ea4\u6216\u56de\u6efe\u4e8b\u52d9\u3002<\/p>\n<h3 id=\"2-%e9%9a%94%e9%9b%a2%e7%b4%9a%e5%88%a5-KdZnEEKMes\">2. \u9694\u96e2\u7d1a\u5225<\/h3>\n<p>MSSQL \u63d0\u4f9b\u4e86\u591a\u7a2e\u9694\u96e2\u7d1a\u5225\uff0c\u9019\u4e9b\u7d1a\u5225\u6703\u5f71\u97ff\u9396\u7684\u884c\u70ba\u3002\u5e38\u898b\u7684\u9694\u96e2\u7d1a\u5225\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u8b80\u53d6\u672a\u63d0\u4ea4\uff08Read Uncommitted\uff09<\/strong>\uff1a\u5141\u8a31\u8b80\u53d6\u672a\u63d0\u4ea4\u7684\u8cc7\u6599\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u9396\u7684\u4f7f\u7528\uff0c\u4f46\u53ef\u80fd\u5c0e\u81f4\u9ad2\u8b80\u3002<\/li>\n<li><strong>\u8b80\u53d6\u5df2\u63d0\u4ea4\uff08Read Committed\uff09<\/strong>\uff1a\u53ea\u5141\u8a31\u8b80\u53d6\u5df2\u63d0\u4ea4\u7684\u8cc7\u6599\uff0c\u9019\u662f MSSQL \u7684\u9810\u8a2d\u9694\u96e2\u7d1a\u5225\u3002<\/li>\n<li><strong>\u53ef\u91cd\u8907\u8b80\u53d6\uff08Repeatable Read\uff09<\/strong>\uff1a\u5728\u4e8b\u52d9\u57f7\u884c\u671f\u9593\uff0c\u9396\u5b9a\u8b80\u53d6\u7684\u8cc7\u6599\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52d9\u4fee\u6539\u3002<\/li>\n<li><strong>\u5e8f\u5217\u5316\uff08Serializable\uff09<\/strong>\uff1a\u6700\u56b4\u683c\u7684\u9694\u96e2\u7d1a\u5225\uff0c\u6703\u9396\u5b9a\u6574\u500b\u7bc4\u570d\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52d9\u63d2\u5165\u8cc7\u6599\u3002<\/li>\n<\/ul>\n<h3 id=\"3-%e9%8e%96%e7%9a%84%e5%8d%87%e7%b4%9a-KdZnEEKMes\">3. \u9396\u7684\u5347\u7d1a<\/h3>\n<p>\u7576\u4e00\u500b\u4e8b\u52d9\u9700\u8981\u7372\u53d6\u66f4\u591a\u7684\u9396\u6642\uff0cMSSQL \u53ef\u80fd\u6703\u81ea\u52d5\u5c07\u9396\u5347\u7d1a\u70ba\u66f4\u9ad8\u7d1a\u5225\u7684\u9396\u3002\u4f8b\u5982\uff0c\u7576\u4e00\u500b\u4e8b\u52d9\u9700\u8981\u5c0d\u591a\u884c\u8cc7\u6599\u9032\u884c\u64cd\u4f5c\u6642\uff0c\u7cfb\u7d71\u53ef\u80fd\u6703\u5c07\u591a\u500b\u884c\u9396\u5347\u7d1a\u70ba\u9801\u9396\u6216\u8868\u9396\u3002\u9019\u7a2e\u5347\u7d1a\u96d6\u7136\u53ef\u4ee5\u6e1b\u5c11\u9396\u7684\u6578\u91cf\uff0c\u4f46\u4e5f\u53ef\u80fd\u5c0e\u81f4\u5176\u4ed6\u4e8b\u52d9\u7684\u7b49\u5f85\u6642\u9593\u589e\u52a0\u3002<\/p>\n<h2 id=\"%e9%8e%96%e7%9a%84%e7%9b%a3%e6%8e%a7%e8%88%87%e5%84%aa%e5%8c%96-KdZnEEKMes\">\u9396\u7684\u76e3\u63a7\u8207\u512a\u5316<\/h2>\n<p>\u70ba\u4e86\u78ba\u4fdd\u8cc7\u6599\u5eab\u7684\u6027\u80fd\uff0c\u76e3\u63a7\u548c\u512a\u5316\u9396\u7684\u4f7f\u7528\u662f\u5fc5\u8981\u7684\u3002MSSQL \u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u4f86\u76e3\u63a7\u9396\u7684\u72c0\u614b\uff0c\u4f8b\u5982\u4f7f\u7528\u7cfb\u7d71\u8996\u5716\u548c\u52d5\u614b\u7ba1\u7406\u8996\u5716\uff08DMVs\uff09\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u67e5\u8a62\uff1a<\/p>\n<pre><code>\nSELECT * FROM sys.dm_tran_locks;\nSELECT * FROM sys.dm_exec_requests WHERE blocking_session_id  0;\n<\/code><\/pre>\n<p>\u9019\u4e9b\u67e5\u8a62\u53ef\u4ee5\u5e6b\u52a9\u7ba1\u7406\u54e1\u8b58\u5225\u9396\u7684\u6301\u6709\u8005\u548c\u88ab\u963b\u585e\u7684\u4e8b\u52d9\uff0c\u5f9e\u800c\u9032\u884c\u76f8\u61c9\u7684\u512a\u5316\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-KdZnEEKMes\">\u7d50\u8ad6<\/h2>\n<p>MSSQL \u5132\u5b58\u904e\u7a0b\u4e2d\u7684\u9396\u6280\u8853\u662f\u78ba\u4fdd\u8cc7\u6599\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u7684\u95dc\u9375\u3002\u4e86\u89e3\u9396\u7684\u57fa\u672c\u6982\u5ff5\u3001\u7ba1\u7406\u65b9\u5f0f\u53ca\u5176\u5c0d\u6027\u80fd\u7684\u5f71\u97ff\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u548c\u8cc7\u6599\u5eab\u7ba1\u7406\u54e1\u66f4\u6709\u6548\u5730\u8a2d\u8a08\u548c\u512a\u5316\u8cc7\u6599\u5eab\u61c9\u7528\u3002\u900f\u904e\u9069\u7576\u7684\u76e3\u63a7\u548c\u512a\u5316\u63aa\u65bd\uff0c\u53ef\u4ee5\u6e1b\u5c11\u9396\u7af6\u722d\uff0c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u9999\u6e2f\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u74b0\u5883\u4e2d\u512a\u5316 MSSQL \u7684\u6027\u80fd\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MSSQL\u5132\u5b58\u904e\u7a0b\u4e2d\u7684\u9396\u6280\u8853\uff0c\u4e86\u89e3\u5176\u5c0d\u6027\u80fd\u548c\u6578\u64da\u4e00\u81f4\u6027\u7684\u5f71\u97ff\uff0c\u63d0\u5347\u6578\u64da\u5eab\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-64959","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64959","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=64959"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64959\/revisions"}],"predecessor-version":[{"id":64960,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64959\/revisions\/64960"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=64959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=64959"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=64959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}