{"id":20812,"date":"2024-01-02T06:21:24","date_gmt":"2024-01-02T06:21:24","guid":{"rendered":"https:\/\/server.hk\/blog\/20812\/"},"modified":"2024-11-14T10:38:11","modified_gmt":"2024-11-14T02:38:11","slug":"how-to-fix-postgresql-error-code-08003-connection_does_not_exist","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/20812\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a08003 &#8211; connection_does_not_exist"},"content":{"rendered":"<h1 id=\"how-to-fix-postgresql-error-code-08003-connection_does_not_exist-SRSsIDXffk\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a08003 &#8211; connection_does_not_exist<\/h1>\n<p>PostgreSQL \u662f\u4e00\u6b3e\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u5f0f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u3002\u4e0d\u904e\uff0c\u8207\u6240\u6709\u8edf\u9ad4\u4e00\u6a23\uff0c\u5b83\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u932f\u8aa4\uff0c\u9019\u4e9b\u932f\u8aa4\u53ef\u80fd\u6703\u5e72\u64fe\u5176\u6b63\u5e38\u64cd\u4f5c\u3002\u5176\u4e2d\u4e00\u500b\u932f\u8aa4\u662f PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a08003 &#8211; connection_does_not_exist\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u8a72\u932f\u8aa4\u7684\u6210\u56e0\uff0c\u4e26\u63d0\u4f9b\u9010\u6b65\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"understanding-the-error-SRSsIDXffk\">\u7406\u89e3\u932f\u8aa4<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a08003 &#8211; connection_does_not_exist \u7576\u5ba2\u6236\u7aef\u61c9\u7528\u7a0b\u5e8f\u5617\u8a66\u8207 PostgreSQL \u4f3a\u670d\u5668\u5efa\u7acb\u9023\u63a5\uff0c\u4f46\u4f3a\u670d\u5668\u672a\u8b58\u5225\u6216\u78ba\u8a8d\u8a72\u9023\u63a5\u8acb\u6c42\u6642\u767c\u751f\u3002\u9019\u500b\u932f\u8aa4\u5c0d\u7528\u6236\u800c\u8a00\u53ef\u80fd\u76f8\u7576\u4ee4\u4eba\u6cae\u55aa\uff0c\u4e26\u53ef\u80fd\u963b\u6b62\u4ed6\u5011\u8a2a\u554f\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"possible-causes-SRSsIDXffk\">\u53ef\u80fd\u7684\u6210\u56e0<\/h2>\n<p>\u9020\u6210 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a08003 &#8211; connection_does_not_exist \u7684\u6f5b\u5728\u539f\u56e0\u6709\u5e7e\u500b\uff1a<\/p>\n<ul>\n<li><strong>\u4e0d\u6b63\u78ba\u7684\u9023\u63a5\u53c3\u6578\uff1a<\/strong> \u4e00\u500b\u5e38\u898b\u7684\u539f\u56e0\u662f\u63d0\u4f9b\u4e86\u4e0d\u6b63\u78ba\u7684\u9023\u63a5\u53c3\u6578\uff0c\u4f8b\u5982\u4e3b\u6a5f\u3001\u7aef\u53e3\u3001\u7528\u6236\u540d\u6216\u5bc6\u78bc\u3002\u4ed4\u7d30\u6aa2\u67e5\u9019\u4e9b\u53c3\u6578\u4ee5\u78ba\u4fdd\u5b83\u5011\u8207\u4f3a\u670d\u5668\u914d\u7f6e\u5339\u914d\u81f3\u95dc\u91cd\u8981\u3002<\/li>\n<li><strong>\u9632\u706b\u7246\u6216\u7db2\u7d61\u554f\u984c\uff1a<\/strong> \u9632\u706b\u7246\u6216\u7db2\u7d61\u914d\u7f6e\u53ef\u80fd\u6703\u963b\u6b62\u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u7684\u9023\u63a5\u3002\u78ba\u4fdd\u5fc5\u8981\u7684\u7aef\u53e3\u5df2\u958b\u555f\uff0c\u4e14\u7db2\u7d61\u4e2d\u6c92\u6709\u9650\u5236\u963b\u6b62\u9023\u63a5\u3002<\/li>\n<li><strong>\u4f3a\u670d\u5668\u4e0d\u53ef\u7528\uff1a<\/strong> \u5982\u679c PostgreSQL \u4f3a\u670d\u5668\u672a\u904b\u884c\u6216\u51fa\u73fe\u554f\u984c\uff0c\u5247\u53ef\u80fd\u6703\u62d2\u7d55\u9023\u63a5\u8acb\u6c42\u3002\u8acb\u78ba\u8a8d\u4f3a\u670d\u5668\u5df2\u6b63\u5e38\u904b\u884c\u3002<\/li>\n<li><strong>\u6700\u5927\u9023\u63a5\u6578\u9650\u5236\uff1a<\/strong> PostgreSQL \u5728\u5176\u914d\u7f6e\u4e2d\u5b9a\u7fa9\u4e86\u6700\u5927\u9023\u63a5\u6578\u3002\u5982\u679c\u6b64\u9650\u5236\u9054\u5230\uff0c\u65b0\u7684\u9023\u63a5\u8acb\u6c42\u53ef\u80fd\u6703\u88ab\u62d2\u7d55\u3002\u6aa2\u67e5\u4f3a\u670d\u5668\u914d\u7f6e\uff0c\u4e26\u5728\u5fc5\u8981\u6642\u589e\u52a0\u6700\u5927\u9023\u63a5\u6578\u9650\u5236\u3002<\/li>\n<\/ul>\n<h2 id=\"fixing-the-error-SRSsIDXffk\">\u4fee\u5fa9\u932f\u8aa4<\/h2>\n<p>\u8981\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a08003 &#8211; connection_does_not_exist\uff0c\u8acb\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"step-1-verify-connection-parameters-SRSsIDXffk\">\u6b65\u9a5f 1\uff1a\u9a57\u8b49\u9023\u63a5\u53c3\u6578<\/h3>\n<p>\u518d\u6b21\u6aa2\u67e5\u5ba2\u6236\u7aef\u61c9\u7528\u7a0b\u5e8f\u4f7f\u7528\u7684\u9023\u63a5\u53c3\u6578\u3002\u78ba\u4fdd\u4e3b\u6a5f\u3001\u7aef\u53e3\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\u6b63\u78ba\uff0c\u4e26\u8207\u4f3a\u670d\u5668\u914d\u7f6e\u5339\u914d\u3002\u4efb\u4f55\u4e0d\u4e00\u81f4\u90fd\u53ef\u80fd\u5c0e\u81f4\u9023\u63a5\u932f\u8aa4\u3002<\/p>\n<h3 id=\"step-2-check-firewall-and-network-settings-SRSsIDXffk\">\u6b65\u9a5f 2\uff1a\u6aa2\u67e5\u9632\u706b\u7246\u548c\u7db2\u7d61\u8a2d\u7f6e<\/h3>\n<p>\u6aa2\u67e5\u9632\u706b\u7246\u548c\u7db2\u7d61\u8a2d\u7f6e\u4ee5\u78ba\u4fdd\u5b83\u5011\u6c92\u6709\u963b\u6b62\u9023\u63a5\u3002\u70ba PostgreSQL \u901a\u4fe1\u958b\u653e\u5fc5\u8981\u7684\u7aef\u53e3\uff0c\u4e26\u78ba\u4fdd\u6c92\u6709\u7db2\u7d61\u9650\u5236\u59a8\u7919\u9023\u63a5\u3002<\/p>\n<h3 id=\"step-3-restart-the-postgresql-server-SRSsIDXffk\">\u6b65\u9a5f 3\uff1a\u91cd\u555f PostgreSQL \u4f3a\u670d\u5668<\/h3>\n<p>\u5982\u679c\u4f3a\u670d\u5668\u6b63\u5728\u904b\u884c\u4f46\u4ecd\u7136\u62d2\u7d55\u9023\u63a5\uff0c\u8acb\u5617\u8a66\u91cd\u555f PostgreSQL \u4f3a\u670d\u5668\u3002\u9019\u53ef\u80fd\u6709\u52a9\u65bc\u89e3\u6c7a\u5c0e\u81f4\u932f\u8aa4\u7684\u81e8\u6642\u554f\u984c\u6216\u885d\u7a81\u3002<\/p>\n<h3 id=\"step-4-increase-max-connections-limit-SRSsIDXffk\">\u6b65\u9a5f 4\uff1a\u589e\u52a0\u6700\u5927\u9023\u63a5\u6578\u9650\u5236<\/h3>\n<p>\u5982\u679c PostgreSQL \u4f3a\u670d\u5668\u5df2\u9054\u5230\u6700\u5927\u9023\u63a5\u6578\u9650\u5236\uff0c\u8003\u616e\u5728\u4f3a\u670d\u5668\u914d\u7f6e\u4e2d\u589e\u52a0\u8a72\u9650\u5236\u3002\u9019\u6a23\u53ef\u4ee5\u5141\u8a31\u66f4\u591a\u7684\u4e26\u767c\u9023\u63a5\uff0c\u6e1b\u5c11\u9047\u5230\u9023\u63a5\u932f\u8aa4\u7684\u6a5f\u6703\u3002<\/p>\n<h2 id=\"summary-SRSsIDXffk\">\u6458\u8981<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a08003 &#8211; connection_does_not_exist \u53ef\u4ee5\u901a\u904e\u9a57\u8b49\u9023\u63a5\u53c3\u6578\u3001\u6aa2\u67e5\u9632\u706b\u7246\u548c\u7db2\u7d61\u8a2d\u7f6e\u3001\u91cd\u555f\u4f3a\u670d\u5668\u6216\u589e\u52a0\u6700\u5927\u9023\u63a5\u6578\u9650\u5236\u4f86\u89e3\u6c7a\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u6b65\u9a5f\uff0c\u7528\u6236\u53ef\u4ee5\u514b\u670d\u6b64\u932f\u8aa4\uff0c\u91cd\u65b0\u7372\u5f97\u5c0d\u5176 PostgreSQL \u6578\u64da\u5eab\u7684\u8a2a\u554f\u3002<\/p>\n<p>\u5982\u9700\u53ef\u9760\u4e14\u9ad8\u6027\u80fd\u7684 VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8003\u616e <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002\u6191\u85c9\u6211\u5011\u5353\u8d8a\u7684 VPS \u8a17\u7ba1\u670d\u52d9\uff0c\u60a8\u53ef\u4ee5\u78ba\u4fdd PostgreSQL \u548c\u5176\u4ed6\u61c9\u7528\u7a0b\u5e8f\u7684\u9806\u5229\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4fee\u5fa9 PostgreSQL &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-20812","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20812","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=20812"}],"version-history":[{"count":2,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20812\/revisions"}],"predecessor-version":[{"id":24273,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20812\/revisions\/24273"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=20812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=20812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=20812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}