{"id":177101,"date":"2024-11-08T13:21:21","date_gmt":"2024-11-08T05:21:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/177101\/"},"modified":"2024-11-08T13:21:22","modified_gmt":"2024-11-08T05:21:22","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41040-sql%e7%8b%80%e6%85%8b%ef%bc%9a08004%ef%bc%88er_con_count_error%ef%bc%89%e9%80%a3%e6%8e%a5%e9%81%8e%e5%a4%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/177101\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41040 &#8211; SQL\u72c0\u614b\uff1a08004\uff08ER_CON_COUNT_ERROR\uff09\u9023\u63a5\u904e\u591a"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41040-sql%e7%8b%80%e6%85%8b%ef%bc%9a08004%ef%bc%88er_con_count_error%ef%bc%89%e9%80%a3%e6%8e%a5%e9%81%8e%e5%a4%9a-djpwOGYbqA\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41040 &#8211; SQL\u72c0\u614b\uff1a08004\uff08ER_CON_COUNT_ERROR\uff09\u9023\u63a5\u904e\u591a<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa41040\uff0c\u8a72\u932f\u8aa4\u7684SQL\u72c0\u614b\u70ba08004\uff0c\u8868\u793a\u201c\u9023\u63a5\u904e\u591a\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u6578\u64da\u5eab\u7684\u9023\u63a5\u6578\u9054\u5230\u6700\u5927\u9650\u5236\u6642\uff0c\u5c0e\u81f4\u65b0\u7684\u9023\u63a5\u8acb\u6c42\u7121\u6cd5\u88ab\u63a5\u53d7\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6b64\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0-djpwOGYbqA\">\u932f\u8aa4\u539f\u56e0<\/h2>\n<p>MySQL\u7684\u9023\u63a5\u6578\u9650\u5236\u662f\u7531\u7cfb\u7d71\u8b8a\u91cf <code>max_connections<\/code> \u63a7\u5236\u7684\u3002\u7576\u540c\u6642\u9023\u63a5\u5230\u6578\u64da\u5eab\u7684\u5ba2\u6236\u7aef\u6578\u91cf\u8d85\u904e\u9019\u500b\u9650\u5236\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u932f\u8aa41040\u3002\u9019\u7a2e\u60c5\u6cc1\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6d41\u91cf\u61c9\u7528\uff1a<\/strong>\u5982\u679c\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u5728\u9ad8\u5cf0\u6642\u6bb5\u63a5\u6536\u5927\u91cf\u8acb\u6c42\uff0c\u53ef\u80fd\u6703\u8fc5\u901f\u9054\u5230\u9023\u63a5\u6578\u7684\u4e0a\u9650\u3002<\/li>\n<li><strong>\u672a\u6b63\u78ba\u95dc\u9589\u7684\u9023\u63a5\uff1a<\/strong>\u5982\u679c\u61c9\u7528\u7a0b\u5e8f\u5728\u4f7f\u7528\u5b8c\u6578\u64da\u5eab\u9023\u63a5\u5f8c\u672a\u80fd\u6b63\u78ba\u95dc\u9589\uff0c\u9019\u4e9b\u9023\u63a5\u5c07\u4fdd\u6301\u6253\u958b\u72c0\u614b\uff0c\u6700\u7d42\u5c0e\u81f4\u9023\u63a5\u6578\u8017\u76e1\u3002<\/li>\n<li><strong>\u914d\u7f6e\u4e0d\u7576\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0cMySQL\u7684\u9ed8\u8a8d\u914d\u7f6e\u53ef\u80fd\u4e0d\u9069\u5408\u60a8\u7684\u61c9\u7528\u9700\u6c42\uff0c\u5c0e\u81f4\u9023\u63a5\u6578\u9650\u5236\u904e\u4f4e\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%aa%a2%e6%9f%a5%e7%95%b6%e5%89%8d%e9%80%a3%e6%8e%a5%e6%95%b8-djpwOGYbqA\">\u6aa2\u67e5\u7576\u524d\u9023\u63a5\u6578<\/h2>\n<p>\u5728\u89e3\u6c7a\u6b64\u554f\u984c\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u6aa2\u67e5\u7576\u524d\u7684\u9023\u63a5\u6578\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u67e5\u770b\u7576\u524d\u7684\u9023\u63a5\u6578\uff1a<\/p>\n<pre><code>SHOW STATUS LIKE 'Threads_connected';<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u7576\u524d\u9023\u63a5\u5230\u6578\u64da\u5eab\u7684\u5ba2\u6236\u7aef\u6578\u91cf\u3002\u60a8\u9084\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u67e5\u770b\u6700\u5927\u9023\u63a5\u6578\u7684\u8a2d\u7f6e\uff1a<\/p>\n<pre><code>SHOW VARIABLES LIKE 'max_connections';<\/code><\/pre>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-djpwOGYbqA\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<h3 id=\"1-%e5%a2%9e%e5%8a%a0max_connections%e7%9a%84%e5%80%bc-djpwOGYbqA\">1. \u589e\u52a0max_connections\u7684\u503c<\/h3>\n<p>\u5982\u679c\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u78ba\u5be6\u9700\u8981\u66f4\u591a\u7684\u9023\u63a5\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u589e\u52a0 <code>max_connections<\/code> \u7684\u503c\u3002\u9019\u53ef\u4ee5\u901a\u904e\u7de8\u8f2fMySQL\u914d\u7f6e\u6587\u4ef6\uff08\u901a\u5e38\u662f <code>my.cnf<\/code> \u6216 <code>my.ini<\/code>\uff09\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>[mysqld]\nmax_connections = 200<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c\u60a8\u53ef\u4ee5\u6839\u64da\u9700\u8981\u8abf\u6574\u6578\u5b57\u3002\u4fee\u6539\u5f8c\uff0c\u91cd\u555fMySQL\u670d\u52d9\u4ee5\u4f7f\u66f4\u6539\u751f\u6548\u3002<\/p>\n<h3 id=\"2-%e5%84%aa%e5%8c%96%e6%87%89%e7%94%a8%e7%a8%8b%e5%ba%8f%e7%9a%84%e9%80%a3%e6%8e%a5%e7%ae%a1%e7%90%86-djpwOGYbqA\">2. \u512a\u5316\u61c9\u7528\u7a0b\u5e8f\u7684\u9023\u63a5\u7ba1\u7406<\/h3>\n<p>\u78ba\u4fdd\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u5728\u4f7f\u7528\u5b8c\u6578\u64da\u5eab\u9023\u63a5\u5f8c\u80fd\u5920\u6b63\u78ba\u95dc\u9589\u9023\u63a5\u3002\u4f7f\u7528\u9023\u63a5\u6c60\u6280\u8853\u53ef\u4ee5\u6709\u6548\u7ba1\u7406\u9023\u63a5\uff0c\u6e1b\u5c11\u4e0d\u5fc5\u8981\u7684\u9023\u63a5\u958b\u92b7\u3002\u8a31\u591a\u73fe\u4ee3\u6846\u67b6\u548c\u5eab\u90fd\u63d0\u4f9b\u4e86\u9023\u63a5\u6c60\u7684\u652f\u6301\u3002<\/p>\n<h3 id=\"3-%e7%9b%a3%e6%8e%a7%e5%92%8c%e8%aa%bf%e6%95%b4-djpwOGYbqA\">3. \u76e3\u63a7\u548c\u8abf\u6574<\/h3>\n<p>\u5b9a\u671f\u76e3\u63a7\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u9023\u63a5\u6578\u4f7f\u7528\u60c5\u6cc1\uff0c\u6839\u64da\u5be6\u969b\u9700\u6c42\u9032\u884c\u8abf\u6574\u3002\u53ef\u4ee5\u4f7f\u7528MySQL\u7684\u6027\u80fd\u76e3\u63a7\u5de5\u5177\u4f86\u7372\u53d6\u8a73\u7d30\u7684\u9023\u63a5\u4f7f\u7528\u60c5\u6cc1\u5831\u544a\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-djpwOGYbqA\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41040\uff08ER_CON_COUNT_ERROR\uff09\u901a\u5e38\u662f\u7531\u65bc\u9023\u63a5\u6578\u8d85\u904e\u6700\u5927\u9650\u5236\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u589e\u52a0 <code>max_connections<\/code> \u7684\u503c\u3001\u512a\u5316\u61c9\u7528\u7a0b\u5e8f\u7684\u9023\u63a5\u7ba1\u7406\u4ee5\u53ca\u5b9a\u671f\u76e3\u63a7\u6578\u64da\u5eab\u6027\u80fd\uff0c\u53ef\u4ee5\u6709\u6548\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u7a69\u5b9a\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u60a8\u7684\u6578\u64da\u5eab\u5728\u9ad8\u6d41\u91cf\u6642\u671f\u4ecd\u7136\u80fd\u5920\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41040\uff08ER_CON_COUNT_ERROR\uff09\uff0c\u89e3\u6c7a\u9023\u63a5\u904e\u591a\u554f\u984c\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u8207\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-177101","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177101","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=177101"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177101\/revisions"}],"predecessor-version":[{"id":177102,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177101\/revisions\/177102"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=177101"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=177101"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=177101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}