{"id":153245,"date":"2024-11-02T05:50:19","date_gmt":"2024-11-01T21:50:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153245\/"},"modified":"2024-11-02T05:50:20","modified_gmt":"2024-11-01T21:50:20","slug":"%e5%be%9e-sql-server-%e8%a8%88%e5%8a%83%e7%b7%a9%e5%ad%98%e4%b8%ad%e6%b8%85%e9%99%a4%e6%9f%a5%e8%a9%a2%e8%a8%88%e5%8a%83","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153245\/","title":{"rendered":"\u5f9e SQL Server \u8a08\u5283\u7de9\u5b58\u4e2d\u6e05\u9664\u67e5\u8a62\u8a08\u5283"},"content":{"rendered":"<h1 id=\"%e5%be%9e-sql-server-%e8%a8%88%e5%8a%83%e7%b7%a9%e5%ad%98%e4%b8%ad%e6%b8%85%e9%99%a4%e6%9f%a5%e8%a9%a2%e8%a8%88%e5%8a%83-yrZjwgapbe\">\u5f9e SQL Server \u8a08\u5283\u7de9\u5b58\u4e2d\u6e05\u9664\u67e5\u8a62\u8a08\u5283<\/h1>\n<p>\u5728\u4f7f\u7528 SQL Server \u7684\u904e\u7a0b\u4e2d\uff0c\u67e5\u8a62\u6027\u80fd\u7684\u512a\u5316\u662f\u6bcf\u4f4d\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u548c\u958b\u767c\u8005\u5fc5\u9808\u9762\u5c0d\u7684\u91cd\u8981\u8ab2\u984c\u3002SQL Server \u6703\u5c07\u57f7\u884c\u904e\u7684\u67e5\u8a62\u8a08\u5283\u7de9\u5b58\u5728\u8a08\u5283\u7de9\u5b58\u4e2d\uff0c\u4ee5\u4fbf\u5728\u672a\u4f86\u57f7\u884c\u76f8\u540c\u67e5\u8a62\u6642\u80fd\u5920\u5feb\u901f\u97ff\u61c9\u3002\u7136\u800c\uff0c\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u9019\u4e9b\u7de9\u5b58\u7684\u67e5\u8a62\u8a08\u5283\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u7279\u5225\u662f\u5728\u6578\u64da\u5eab\u7d50\u69cb\u6216\u6578\u64da\u5206\u4f48\u767c\u751f\u8b8a\u5316\u7684\u60c5\u6cc1\u4e0b\u3002\u56e0\u6b64\uff0c\u4e86\u89e3\u5982\u4f55\u5f9e SQL Server \u8a08\u5283\u7de9\u5b58\u4e2d\u6e05\u9664\u67e5\u8a62\u8a08\u5283\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%9f%a5%e8%a9%a2%e8%a8%88%e5%8a%83%e7%b7%a9%e5%ad%98%ef%bc%9f-yrZjwgapbe\">\u4ec0\u9ebc\u662f\u67e5\u8a62\u8a08\u5283\u7de9\u5b58\uff1f<\/h2>\n<p>\u67e5\u8a62\u8a08\u5283\u7de9\u5b58\u662f SQL Server \u7528\u4f86\u5b58\u5132\u5df2\u7de8\u8b6f\u7684\u67e5\u8a62\u8a08\u5283\u7684\u5167\u5b58\u5340\u57df\u3002\u7576\u4e00\u500b\u67e5\u8a62\u88ab\u57f7\u884c\u6642\uff0cSQL Server \u6703\u5206\u6790\u8a72\u67e5\u8a62\u4e26\u751f\u6210\u4e00\u500b\u57f7\u884c\u8a08\u5283\uff0c\u9019\u500b\u8a08\u5283\u6703\u88ab\u5b58\u5132\u5728\u8a08\u5283\u7de9\u5b58\u4e2d\u3002\u7576\u76f8\u540c\u7684\u67e5\u8a62\u518d\u6b21\u57f7\u884c\u6642\uff0cSQL Server \u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u9019\u500b\u5df2\u7de8\u8b6f\u7684\u8a08\u5283\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u65b0\u5206\u6790\u548c\u7de8\u8b6f\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%b8%85%e9%99%a4%e6%9f%a5%e8%a9%a2%e8%a8%88%e5%8a%83%ef%bc%9f-yrZjwgapbe\">\u70ba\u4ec0\u9ebc\u9700\u8981\u6e05\u9664\u67e5\u8a62\u8a08\u5283\uff1f<\/h2>\n<p>\u5118\u7ba1\u8a08\u5283\u7de9\u5b58\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u820a\u7684\u67e5\u8a62\u8a08\u5283\u53ef\u80fd\u4e0d\u518d\u9069\u7528\u3002\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u8b8a\u66f4\uff1a<\/strong>\u5982\u679c\u8868\u4e2d\u7684\u6578\u64da\u91cf\u6216\u6578\u64da\u5206\u4f48\u767c\u751f\u4e86\u986f\u8457\u8b8a\u5316\uff0c\u820a\u7684\u67e5\u8a62\u8a08\u5283\u53ef\u80fd\u4e0d\u518d\u662f\u6700\u4f73\u9078\u64c7\u3002<\/li>\n<li><strong>\u7d22\u5f15\u8b8a\u66f4\uff1a<\/strong>\u7576\u5c0d\u8868\u9032\u884c\u7d22\u5f15\u6dfb\u52a0\u3001\u522a\u9664\u6216\u4fee\u6539\u6642\uff0c\u820a\u7684\u67e5\u8a62\u8a08\u5283\u53ef\u80fd\u7121\u6cd5\u5145\u5206\u5229\u7528\u65b0\u7684\u7d22\u5f15\u3002<\/li>\n<li><strong>\u67e5\u8a62\u53c3\u6578\u8b8a\u5316\uff1a<\/strong>\u4f7f\u7528\u53c3\u6578\u5316\u67e5\u8a62\u6642\uff0c\u67d0\u4e9b\u67e5\u8a62\u8a08\u5283\u53ef\u80fd\u6703\u5c0d\u7279\u5b9a\u53c3\u6578\u503c\u8868\u73fe\u4e0d\u4f73\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%b8%85%e9%99%a4%e6%9f%a5%e8%a9%a2%e8%a8%88%e5%8a%83-yrZjwgapbe\">\u5982\u4f55\u6e05\u9664\u67e5\u8a62\u8a08\u5283<\/h2>\n<p>\u5728 SQL Server \u4e2d\uff0c\u6709\u5e7e\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u6e05\u9664\u67e5\u8a62\u8a08\u5283\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8-dbcc-freeproccache-yrZjwgapbe\">1. \u4f7f\u7528 DBCC FREEPROCCACHE<\/h3>\n<p>\u9019\u662f\u4e00\u500b\u7528\u65bc\u6e05\u9664\u6574\u500b\u8a08\u5283\u7de9\u5b58\u7684\u547d\u4ee4\u3002\u57f7\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>DBCC FREEPROCCACHE;<\/code><\/pre>\n<p>\u9019\u5c07\u6e05\u9664\u6240\u6709\u7684\u67e5\u8a62\u8a08\u5283\uff0c\u4e26\u53ef\u80fd\u5c0e\u81f4\u6240\u6709\u67e5\u8a62\u5728\u4e0b\u4e00\u6b21\u57f7\u884c\u6642\u91cd\u65b0\u7de8\u8b6f\u3002<\/p>\n<h3 id=\"2-%e6%b8%85%e9%99%a4%e7%89%b9%e5%ae%9a%e6%9f%a5%e8%a9%a2%e8%a8%88%e5%8a%83-yrZjwgapbe\">2. \u6e05\u9664\u7279\u5b9a\u67e5\u8a62\u8a08\u5283<\/h3>\n<p>\u5982\u679c\u53ea\u60f3\u6e05\u9664\u7279\u5b9a\u7684\u67e5\u8a62\u8a08\u5283\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>DECLARE @plan_handle VARBINARY(64);\nSET @plan_handle = (SELECT plan_handle FROM sys.dm_exec_query_stats WHERE sql_handle = (SELECT sql_handle FROM sys.dm_exec_requests WHERE session_id = @@SPID));\nDBCC FREEPROCCACHE(@plan_handle);<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u91dd\u5c0d\u7279\u5b9a\u7684\u67e5\u8a62\u8a08\u5283\u9032\u884c\u6e05\u9664\uff0c\u800c\u4e0d\u5f71\u97ff\u5176\u4ed6\u67e5\u8a62\u7684\u6027\u80fd\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e6%9f%a5%e8%a9%a2%e6%8f%90%e7%a4%ba-yrZjwgapbe\">3. \u4f7f\u7528\u67e5\u8a62\u63d0\u793a<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u67e5\u8a62\u63d0\u793a\u4f86\u5f37\u5236 SQL Server \u91cd\u65b0\u7de8\u8b6f\u67e5\u8a62\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 <code>OPTION (RECOMPILE)<\/code> \u63d0\u793a\uff1a<\/p>\n<pre><code>SELECT * FROM YourTable WHERE YourColumn = @YourParameter OPTION (RECOMPILE);<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u5728\u6bcf\u6b21\u57f7\u884c\u6642\u90fd\u91cd\u65b0\u7de8\u8b6f\u67e5\u8a62\u8a08\u5283\uff0c\u5f9e\u800c\u7372\u5f97\u6700\u4f73\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-yrZjwgapbe\">\u7d50\u8ad6<\/h2>\n<p>\u6e05\u9664 SQL Server \u8a08\u5283\u7de9\u5b58\u4e2d\u7684\u67e5\u8a62\u8a08\u5283\u662f\u4e00\u9805\u91cd\u8981\u7684\u7dad\u8b77\u4efb\u52d9\uff0c\u80fd\u5920\u5e6b\u52a9\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u78ba\u4fdd\u67e5\u8a62\u6027\u80fd\u7684\u7a69\u5b9a\u6027\u548c\u9ad8\u6548\u6027\u3002\u901a\u904e\u9069\u7576\u5730\u4f7f\u7528 <code>DBCC FREEPROCCACHE<\/code> \u548c\u5176\u4ed6\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u67e5\u8a62\u8a08\u5283\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u7cfb\u7d71\u6027\u80fd\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5f9e SQL Server \u8a08\u5283\u7de9\u5b58\u4e2d\u6e05\u9664\u67e5\u8a62\u8a08\u5283\uff0c\u4ee5\u512a\u5316\u6027\u80fd\u548c\u89e3\u6c7a\u57f7\u884c\u6548\u7387\u554f\u984c\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-153245","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153245","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=153245"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153245\/revisions"}],"predecessor-version":[{"id":153246,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153245\/revisions\/153246"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153245"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153245"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153245"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}