{"id":163245,"date":"2024-11-04T21:53:37","date_gmt":"2024-11-04T13:53:37","guid":{"rendered":"https:\/\/server.hk\/cnblog\/163245\/"},"modified":"2024-11-04T21:53:38","modified_gmt":"2024-11-04T13:53:38","slug":"%e8%a7%a3%e6%b1%bamssql%e6%9f%a5%e8%a9%a2%e9%8e%96%e5%ae%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%8a%80%e5%b7%a7%ef%bc%88mssql%e6%9f%a5%e8%a9%a2%e9%8e%96%e5%ba%absql%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/163245\/","title":{"rendered":"\u89e3\u6c7aMSSQL\u67e5\u8a62\u9396\u5b9a\u6578\u64da\u5eab\u7684\u6280\u5de7\uff08MSSQL\u67e5\u8a62\u9396\u5eabSQL\uff09"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e6%b1%bamssql%e6%9f%a5%e8%a9%a2%e9%8e%96%e5%ae%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%8a%80%e5%b7%a7%ef%bc%88mssql%e6%9f%a5%e8%a9%a2%e9%8e%96%e5%ba%absql%ef%bc%89-VLpfOnniff\">\u89e3\u6c7aMSSQL\u67e5\u8a62\u9396\u5b9a\u6578\u64da\u5eab\u7684\u6280\u5de7\uff08MSSQL\u67e5\u8a62\u9396\u5eabSQL\uff09<\/h1>\n<p>\u5728\u4f7f\u7528Microsoft SQL Server\uff08MSSQL\uff09\u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u67e5\u8a62\u9396\u5b9a\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\u3002\u7576\u591a\u500b\u7528\u6236\u540c\u6642\u8a2a\u554f\u6578\u64da\u5eab\u6642\uff0c\u9396\u5b9a\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u751a\u81f3\u5f71\u97ff\u696d\u52d9\u904b\u4f5c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u89e3\u6c7aMSSQL\u67e5\u8a62\u9396\u5b9a\u7684\u6280\u5de7\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%9f%a5%e8%a9%a2%e9%8e%96%e5%ae%9a%ef%bc%9f-VLpfOnniff\">\u4ec0\u9ebc\u662f\u67e5\u8a62\u9396\u5b9a\uff1f<\/h2>\n<p>\u67e5\u8a62\u9396\u5b9a\u662f\u6307\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u904e\u7a0b\u4e2d\uff0c\u70ba\u4e86\u4fdd\u8b77\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\uff0c\u7cfb\u7d71\u5c0d\u67d0\u4e9b\u6578\u64da\u884c\u6216\u6574\u500b\u8868\u9032\u884c\u7684\u9396\u5b9a\u3002\u9019\u610f\u5473\u8457\u7576\u4e00\u500b\u7528\u6236\u6b63\u5728\u4fee\u6539\u6578\u64da\u6642\uff0c\u5176\u4ed6\u7528\u6236\u7121\u6cd5\u540c\u6642\u5c0d\u8a72\u6578\u64da\u9032\u884c\u8b80\u53d6\u6216\u5beb\u5165\u64cd\u4f5c\u3002\u9019\u7a2e\u60c5\u6cc1\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e2d\u5c24\u70ba\u660e\u986f\uff0c\u53ef\u80fd\u5c0e\u81f4\u67e5\u8a62\u5ef6\u9072\u6216\u8d85\u6642\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e9%8e%96%e5%ae%9a%e7%9a%84%e9%a1%9e%e5%9e%8b-VLpfOnniff\">\u67e5\u8a62\u9396\u5b9a\u7684\u985e\u578b<\/h2>\n<ul>\n<li><strong>\u5171\u4eab\u9396\uff08Shared Lock\uff09<\/strong>\uff1a\u5141\u8a31\u591a\u500b\u7528\u6236\u540c\u6642\u8b80\u53d6\u6578\u64da\uff0c\u4f46\u4e0d\u5141\u8a31\u4fee\u6539\u3002<\/li>\n<li><strong>\u6392\u4ed6\u9396\uff08Exclusive Lock\uff09<\/strong>\uff1a\u53ea\u5141\u8a31\u4e00\u500b\u7528\u6236\u5c0d\u6578\u64da\u9032\u884c\u4fee\u6539\uff0c\u5176\u4ed6\u7528\u6236\u7121\u6cd5\u8b80\u53d6\u6216\u4fee\u6539\u3002<\/li>\n<li><strong>\u66f4\u65b0\u9396\uff08Update Lock\uff09<\/strong>\uff1a\u5728\u4fee\u6539\u6578\u64da\u4e4b\u524d\uff0c\u9632\u6b62\u5176\u4ed6\u7528\u6236\u7372\u5f97\u6392\u4ed6\u9396\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%9f%a5%e8%a9%a2%e9%8e%96%e5%ae%9a%e7%9a%84%e6%8a%80%e5%b7%a7-VLpfOnniff\">\u89e3\u6c7a\u67e5\u8a62\u9396\u5b9a\u7684\u6280\u5de7<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e9%81%a9%e7%95%b6%e7%9a%84%e9%9a%94%e9%9b%a2%e7%b4%9a%e5%88%a5-VLpfOnniff\">1. \u4f7f\u7528\u9069\u7576\u7684\u9694\u96e2\u7d1a\u5225<\/h3>\n<p>MSSQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u9694\u96e2\u7d1a\u5225\uff0c\u901a\u904e\u9078\u64c7\u5408\u9069\u7684\u9694\u96e2\u7d1a\u5225\uff0c\u53ef\u4ee5\u6e1b\u5c11\u9396\u5b9a\u7684\u5f71\u97ff\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u201c\u8b80\u53d6\u672a\u63d0\u4ea4\u201d\uff08READ UNCOMMITTED\uff09\u9694\u96e2\u7d1a\u5225\u53ef\u4ee5\u5141\u8a31\u8b80\u53d6\u672a\u63d0\u4ea4\u7684\u6578\u64da\uff0c\u5f9e\u800c\u6e1b\u5c11\u9396\u5b9a\u7684\u60c5\u6cc1\u3002<\/p>\n<pre><code>SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;<\/code><\/pre>\n<h3 id=\"2-%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-VLpfOnniff\">2. \u512a\u5316\u67e5\u8a62\u6027\u80fd<\/h3>\n<p>\u67e5\u8a62\u6027\u80fd\u7684\u512a\u5316\u53ef\u4ee5\u6e1b\u5c11\u9396\u5b9a\u7684\u6301\u7e8c\u6642\u9593\u3002\u901a\u904e\u4f7f\u7528\u7d22\u5f15\u3001\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5168\u8868\u6383\u63cf\u4ee5\u53ca\u7c21\u5316\u67e5\u8a62\uff0c\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u7684\u57f7\u884c\u901f\u5ea6\uff0c\u5f9e\u800c\u6e1b\u5c11\u9396\u5b9a\u7684\u6642\u9593\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e8%a1%8c%e7%b4%9a%e9%8e%96-VLpfOnniff\">3. \u4f7f\u7528\u884c\u7d1a\u9396<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528\u884c\u7d1a\u9396\u800c\u4e0d\u662f\u8868\u7d1a\u9396\u53ef\u4ee5\u6e1b\u5c11\u9396\u5b9a\u7684\u7bc4\u570d\u3002\u9019\u6a23\u53ef\u4ee5\u5141\u8a31\u5176\u4ed6\u7528\u6236\u540c\u6642\u8a2a\u554f\u4e0d\u540c\u7684\u884c\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e26\u767c\u6027\u3002<\/p>\n<pre><code>SELECT * FROM YourTable WITH (ROWLOCK) WHERE YourCondition;<\/code><\/pre>\n<h3 id=\"4-%e5%ae%9a%e6%9c%9f%e6%aa%a2%e6%9f%a5%e5%92%8c%e6%b8%85%e7%90%86%e9%8e%96%e5%ae%9a-VLpfOnniff\">4. \u5b9a\u671f\u6aa2\u67e5\u548c\u6e05\u7406\u9396\u5b9a<\/h3>\n<p>\u4f7f\u7528\u7cfb\u7d71\u8996\u5716\u5982 <code>sys.dm_tran_locks<\/code> \u4f86\u6aa2\u67e5\u7576\u524d\u7684\u9396\u5b9a\u60c5\u6cc1\uff0c\u4e26\u5b9a\u671f\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u9396\u5b9a\u3002\u9019\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u9577\u6642\u9593\u6301\u6709\u9396\u5b9a\u7684\u67e5\u8a62\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u512a\u5316\u3002<\/p>\n<pre><code>SELECT * FROM sys.dm_tran_locks;<\/code><\/pre>\n<h3 id=\"5-%e4%bd%bf%e7%94%a8%e5%bf%ab%e7%85%a7%e9%9a%94%e9%9b%a2-VLpfOnniff\">5. \u4f7f\u7528\u5feb\u7167\u9694\u96e2<\/h3>\n<p>\u5feb\u7167\u9694\u96e2\u5141\u8a31\u7528\u6236\u5728\u4e0d\u9396\u5b9a\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\u8b80\u53d6\u6578\u64da\u3002\u9019\u53ef\u4ee5\u901a\u904e\u555f\u7528\u6578\u64da\u5eab\u7684\u5feb\u7167\u9694\u96e2\u4f86\u5be6\u73fe\uff0c\u5f9e\u800c\u6e1b\u5c11\u9396\u5b9a\u7684\u5f71\u97ff\u3002<\/p>\n<pre><code>ALTER DATABASE YourDatabase SET ALLOW_SNAPSHOT_ISOLATION ON;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-VLpfOnniff\">\u7e3d\u7d50<\/h2>\n<p>\u67e5\u8a62\u9396\u5b9a\u662fMSSQL\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u554f\u984c\uff0c\u901a\u904e\u9078\u64c7\u9069\u7576\u7684\u9694\u96e2\u7d1a\u5225\u3001\u512a\u5316\u67e5\u8a62\u6027\u80fd\u3001\u4f7f\u7528\u884c\u7d1a\u9396\u3001\u5b9a\u671f\u6aa2\u67e5\u9396\u5b9a\u4ee5\u53ca\u555f\u7528\u5feb\u7167\u9694\u96e2\u7b49\u6280\u5de7\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u9396\u5b9a\u5c0d\u696d\u52d9\u904b\u4f5c\u7684\u5f71\u97ff\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5eab\u7ba1\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1\u89e3\u6c7aMSSQL\u67e5\u8a62\u9396\u5b9a\u6578\u64da\u5eab\u7684\u6280\u5de7\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u907f\u514d\u9396\u5eab\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u904b\u884c\u6d41\u66a2\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-163245","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163245","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=163245"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163245\/revisions"}],"predecessor-version":[{"id":163246,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163245\/revisions\/163246"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=163245"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=163245"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=163245"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}