{"id":138665,"date":"2024-10-31T15:39:18","date_gmt":"2024-10-31T07:39:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/138665\/"},"modified":"2024-10-31T15:39:19","modified_gmt":"2024-10-31T07:39:19","slug":"sql-server%e4%bc%ba%e6%9c%8d%e5%99%a8%e5%85%a7%e5%ad%98%e5%8d%87%e7%b4%9a%e5%be%8c%e6%80%a7%e8%83%bd%e6%83%a1%e5%8c%96%e7%9a%84%e7%a0%b4%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/138665\/","title":{"rendered":"SQL Server\u4f3a\u670d\u5668\u5167\u5b58\u5347\u7d1a\u5f8c\u6027\u80fd\u60e1\u5316\u7684\u7834\u89e3"},"content":{"rendered":"<h1 id=\"sql-server%e4%bc%ba%e6%9c%8d%e5%99%a8%e5%85%a7%e5%ad%98%e5%8d%87%e7%b4%9a%e5%be%8c%e6%80%a7%e8%83%bd%e6%83%a1%e5%8c%96%e7%9a%84%e7%a0%b4%e8%a7%a3-usmqOKhtmM\">SQL Server\u4f3a\u670d\u5668\u5167\u5b58\u5347\u7d1a\u5f8c\u6027\u80fd\u60e1\u5316\u7684\u7834\u89e3<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL Server\u4f5c\u70ba\u4e00\u500b\u95dc\u9375\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u627f\u64d4\u8457\u5927\u91cf\u7684\u6578\u64da\u8655\u7406\u4efb\u52d9\u3002\u96a8\u8457\u696d\u52d9\u9700\u6c42\u7684\u589e\u9577\uff0c\u8a31\u591a\u4f01\u696d\u9078\u64c7\u5347\u7d1a\u5176SQL Server\u7684\u5167\u5b58\uff0c\u4ee5\u671f\u63d0\u9ad8\u6027\u80fd\u3002\u7136\u800c\uff0c\u4ee4\u4eba\u56f0\u60d1\u7684\u662f\uff0c\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u5167\u5b58\u7684\u5347\u7d1a\u53cd\u800c\u5c0e\u81f4\u6027\u80fd\u7684\u60e1\u5316\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u9019\u4e00\u73fe\u8c61\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e5%85%a7%e5%ad%98%e5%8d%87%e7%b4%9a%e5%be%8c%e6%80%a7%e8%83%bd%e6%83%a1%e5%8c%96%e7%9a%84%e5%8e%9f%e5%9b%a0-usmqOKhtmM\">\u5167\u5b58\u5347\u7d1a\u5f8c\u6027\u80fd\u60e1\u5316\u7684\u539f\u56e0<\/h2>\n<p>\u5167\u5b58\u5347\u7d1a\u5f8c\u6027\u80fd\u60e1\u5316\u7684\u539f\u56e0\u53ef\u80fd\u6709\u591a\u7a2e\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li><strong>\u5167\u5b58\u914d\u7f6e\u4e0d\u7576\uff1a<\/strong>\u5347\u7d1a\u5f8c\u7684\u5167\u5b58\u5982\u679c\u672a\u7d93\u904e\u5408\u7406\u914d\u7f6e\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4SQL Server\u7121\u6cd5\u6709\u6548\u5229\u7528\u65b0\u589e\u7684\u8cc7\u6e90\u3002\u4f8b\u5982\uff0cSQL Server\u7684\u6700\u5927\u5167\u5b58\u8a2d\u7f6e\u672a\u8abf\u6574\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u7cfb\u7d71\u8cc7\u6e90\u7684\u6d6a\u8cbb\u3002<\/li>\n<li><strong>\u5167\u5b58\u58d3\u529b\u589e\u52a0\uff1a<\/strong>\u7576\u5167\u5b58\u589e\u52a0\u6642\uff0cSQL Server\u53ef\u80fd\u6703\u52a0\u8f09\u66f4\u591a\u7684\u6578\u64da\u9801\u9762\u5230\u5167\u5b58\u4e2d\uff0c\u9019\u53ef\u80fd\u5c0e\u81f4\u7de9\u5b58\u547d\u4e2d\u7387\u4e0b\u964d\uff0c\u5f9e\u800c\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u67e5\u8a62\u8a08\u5283\u7684\u8b8a\u5316\uff1a<\/strong>\u5167\u5b58\u7684\u8b8a\u5316\u53ef\u80fd\u6703\u5f71\u97ffSQL Server\u7684\u67e5\u8a62\u8a08\u5283\u751f\u6210\uff0c\u5c0e\u81f4\u4e0d\u4f73\u7684\u57f7\u884c\u8a08\u5283\u88ab\u9078\u64c7\uff0c\u9032\u800c\u5f71\u97ff\u6027\u80fd\u3002<\/li>\n<li><strong>\u4e26\u884c\u8655\u7406\u7684\u5f71\u97ff\uff1a<\/strong>\u5167\u5b58\u7684\u589e\u52a0\u53ef\u80fd\u6703\u5c0e\u81f4\u66f4\u591a\u7684\u4e26\u884c\u67e5\u8a62\u57f7\u884c\uff0c\u9019\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u6703\u5c0e\u81f4\u8cc7\u6e90\u7af6\u722d\uff0c\u5f9e\u800c\u5f71\u97ff\u6574\u9ad4\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%80%a7%e8%83%bd%e6%83%a1%e5%8c%96%e7%9a%84%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-usmqOKhtmM\">\u6027\u80fd\u60e1\u5316\u7684\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u91dd\u5c0d\u4e0a\u8ff0\u554f\u984c\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u89e3\u6c7a\u65b9\u6848\uff0c\u53ef\u4ee5\u5e6b\u52a9\u4f01\u696d\u5728\u5347\u7d1a\u5167\u5b58\u5f8c\u6062\u5fa9\u6216\u63d0\u5347SQL Server\u7684\u6027\u80fd\uff1a<\/p>\n<h3 id=\"1-%e8%aa%bf%e6%95%b4%e6%9c%80%e5%a4%a7%e5%85%a7%e5%ad%98%e8%a8%ad%e7%bd%ae-usmqOKhtmM\">1. \u8abf\u6574\u6700\u5927\u5167\u5b58\u8a2d\u7f6e<\/h3>\n<p>\u5728\u5347\u7d1a\u5167\u5b58\u5f8c\uff0c\u9996\u5148\u61c9\u6aa2\u67e5SQL Server\u7684\u6700\u5927\u5167\u5b58\u8a2d\u7f6e\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0bSQL\u547d\u4ee4\u4f86\u67e5\u770b\u7576\u524d\u8a2d\u7f6e\uff1a<\/p>\n<pre><code>EXEC sp_configure 'max server memory';<\/code><\/pre>\n<p>\u6839\u64da\u7cfb\u7d71\u7684\u7e3d\u5167\u5b58\uff0c\u5408\u7406\u8a2d\u7f6e\u6700\u5927\u5167\u5b58\u503c\uff0c\u4ee5\u78ba\u4fddSQL Server\u80fd\u5920\u6709\u6548\u5229\u7528\u65b0\u589e\u7684\u5167\u5b58\u3002<\/p>\n<h3 id=\"2-%e7%9b%a3%e6%8e%a7%e7%b7%a9%e5%ad%98%e5%91%bd%e4%b8%ad%e7%8e%87-usmqOKhtmM\">2. \u76e3\u63a7\u7de9\u5b58\u547d\u4e2d\u7387<\/h3>\n<p>\u4f7f\u7528SQL Server\u7684\u52d5\u614b\u7ba1\u7406\u8996\u5716\uff08DMV\uff09\u4f86\u76e3\u63a7\u7de9\u5b58\u547d\u4e2d\u7387\uff0c\u78ba\u4fdd\u5167\u5b58\u7684\u4f7f\u7528\u6548\u7387\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5\u7de9\u5b58\u547d\u4e2d\u7387\uff1a<\/p>\n<pre><code>SELECT \n    (total_logical_reads - total_physical_reads) * 100.0 \/ total_logical_reads AS CacheHitRatio\nFROM \n    sys.dm_exec_query_stats;<\/code><\/pre>\n<p>\u5982\u679c\u7de9\u5b58\u547d\u4e2d\u7387\u4f4e\u65bc\u9810\u671f\uff0c\u5247\u9700\u8981\u8003\u616e\u8abf\u6574\u67e5\u8a62\u6216\u7d22\u5f15\u7b56\u7565\u3002<\/p>\n<h3 id=\"3-%e6%9b%b4%e6%96%b0%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af-usmqOKhtmM\">3. \u66f4\u65b0\u7d71\u8a08\u4fe1\u606f<\/h3>\n<p>\u5347\u7d1a\u5167\u5b58\u5f8c\uff0cSQL Server\u53ef\u80fd\u9700\u8981\u91cd\u65b0\u751f\u6210\u67e5\u8a62\u8a08\u5283\u3002\u5b9a\u671f\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u53ef\u4ee5\u5e6b\u52a9SQL Server\u751f\u6210\u66f4\u512a\u7684\u67e5\u8a62\u8a08\u5283\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff1a<\/p>\n<pre><code>UPDATE STATISTICS [table_name];<\/code><\/pre>\n<h3 id=\"4-%e5%88%86%e6%9e%90%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-usmqOKhtmM\">4. \u5206\u6790\u67e5\u8a62\u6027\u80fd<\/h3>\n<p>\u4f7f\u7528SQL Server\u7684\u57f7\u884c\u8a08\u5283\u5206\u6790\u5de5\u5177\uff0c\u6aa2\u67e5\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002\u6839\u64da\u5206\u6790\u7d50\u679c\uff0c\u5c0d\u67e5\u8a62\u9032\u884c\u512a\u5316\uff0c\u53ef\u80fd\u5305\u62ec\u6dfb\u52a0\u7d22\u5f15\u6216\u91cd\u5beb\u67e5\u8a62\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-usmqOKhtmM\">\u7d50\u8ad6<\/h2>\n<p>\u5347\u7d1aSQL Server\u7684\u5167\u5b58\u662f\u4e00\u500b\u63d0\u5347\u6027\u80fd\u7684\u6709\u6548\u624b\u6bb5\uff0c\u4f46\u5982\u679c\u672a\u80fd\u59a5\u5584\u914d\u7f6e\u548c\u7ba1\u7406\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u7684\u60e1\u5316\u3002\u901a\u904e\u5408\u7406\u8abf\u6574\u5167\u5b58\u8a2d\u7f6e\u3001\u76e3\u63a7\u7de9\u5b58\u547d\u4e2d\u7387\u3001\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u4ee5\u53ca\u5206\u6790\u67e5\u8a62\u6027\u80fd\uff0c\u4f01\u696d\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\uff0c\u5f9e\u800c\u5145\u5206\u767c\u63eeSQL Server\u7684\u6f5b\u529b\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<em><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/em>\u548c<em><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/em>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22SQL Server\u4f3a\u670d\u5668\u5167\u5b58\u5347\u7d1a\u5f8c\u6027\u80fd\u60e1\u5316\u7684\u539f\u56e0\u53ca\u89e3\u6c7a\u65b9\u6848\uff0c\u52a9\u60a8\u512a\u5316\u6578\u64da\u5eab\u6548\u80fd\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\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-138665","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138665","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=138665"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138665\/revisions"}],"predecessor-version":[{"id":138666,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138665\/revisions\/138666"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=138665"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=138665"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=138665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}