{"id":21485,"date":"2024-01-02T10:10:25","date_gmt":"2024-01-02T10:10:25","guid":{"rendered":"https:\/\/server.hk\/blog\/21485\/"},"modified":"2024-11-14T10:33:28","modified_gmt":"2024-11-14T02:33:28","slug":"how-to-fix-postgresql-error-code-hv014-fdw_too_many_handles","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21485\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1aHV014 &#8211; fdw_too_many_handles"},"content":{"rendered":"<h1 id=\"how-to-fix-postgresql-error-code-hv014-fdw_too_many_handles-AbhiGACCHW\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1aHV014 &#8211; fdw_too_many_handles<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u3002\u7136\u800c\uff0c\u50cf\u6240\u6709\u8edf\u4ef6\u4e00\u6a23\uff0c\u5b83\u53ef\u80fd\u6703\u9047\u5230\u932f\u8aa4\uff0c\u5f9e\u800c\u4e2d\u65b7\u5176\u6b63\u5e38\u904b\u884c\u3002\u5176\u4e2d\u4e00\u500b\u932f\u8aa4\u662f HV014 &#8211; fdw_too_many_handles \u932f\u8aa4\u4ee3\u78bc\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u6b64\u932f\u8aa4\u7684\u539f\u56e0\u4e26\u63d0\u4f9b\u9010\u6b65\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"understanding-the-hv014-fdw_too_many_handles-error-AbhiGACCHW\">\u7406\u89e3 HV014 &#8211; fdw_too_many_handles \u932f\u8aa4<\/h2>\n<p>HV014 &#8211; fdw_too_many_handles \u932f\u8aa4\u767c\u751f\u5728 PostgreSQL \u5916\u90e8\u6578\u64da\u5305\u88dd\u5668 (FDW) \u9047\u5230\u6587\u4ef6\u63cf\u8ff0\u7b26\u6578\u91cf\u7684\u9650\u5236\u6642\u3002\u6587\u4ef6\u63cf\u8ff0\u7b26\u662f\u64cd\u4f5c\u7cfb\u7d71\u7528\u4f86\u7ba1\u7406\u6253\u958b\u7684\u6587\u4ef6\u3001\u5957\u63a5\u5b57\u548c\u5176\u4ed6 I\/O \u8cc7\u6e90\u7684\u3002<\/p>\n<p>\u7576 FDW \u9054\u5230\u6700\u5927\u6587\u4ef6\u63cf\u8ff0\u7b26\u6578\u91cf\u6642\uff0c\u6703\u89f8\u767c HV014 \u932f\u8aa4\uff0c\u8868\u793a\u6253\u958b\u7684\u53e5\u67c4\u904e\u591a\u3002\u9019\u500b\u932f\u8aa4\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u4e26\u53ef\u80fd\u4f7f\u67e5\u8a62\u5931\u6557\u6216\u639b\u8d77\u3002<\/p>\n<h2 id=\"causes-of-the-hv014-fdw_too_many_handles-error-AbhiGACCHW\">HV014 &#8211; fdw_too_many_handles \u932f\u8aa4\u7684\u539f\u56e0<\/h2>\n<p>HV014 &#8211; fdw_too_many_handles \u932f\u8aa4\u53ef\u80fd\u7531\u5e7e\u500b\u6f5b\u5728\u539f\u56e0\u5f15\u8d77\uff1a<\/p>\n<ul>\n<li><strong>\u7cfb\u7d71\u8cc7\u6e90\u4e0d\u8db3\uff1a<\/strong>\u5982\u679c\u64cd\u4f5c\u7cfb\u7d71\u5c0d\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u6578\u91cf\u8a2d\u7f6e\u4e86\u8f03\u4f4e\u7684\u9650\u5236\uff0c\u5247\u53ef\u80fd\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002\u9019\u7a2e\u9650\u5236\u53ef\u80fd\u7531\u65bc\u5404\u7a2e\u56e0\u7d20\u5f15\u8d77\uff0c\u4f8b\u5982\u7cfb\u7d71\u914d\u7f6e\u6216\u8cc7\u6e90\u5206\u914d\u3002<\/li>\n<li><strong>FDW \u914d\u7f6e\u4e0d\u7576\uff1a<\/strong>\u5982\u679c FDW \u914d\u7f6e\u4e0d\u6b63\u78ba\uff0c\u53ef\u80fd\u7121\u6cd5\u6b63\u78ba\u91cb\u653e\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5c0e\u81f4\u6253\u958b\u7684\u53e5\u67c4\u7a4d\u7d2f\u3002<\/li>\n<li><strong>\u9ad8\u4f75\u767c\uff1a<\/strong>\u5982\u679c\u6709\u591a\u500b\u4e26\u767c\u9023\u63a5\u6216\u67e5\u8a62\u4f7f\u7528 FDW\uff0c\u5247\u53ef\u80fd\u8fc5\u901f\u8017\u76e1\u53ef\u7528\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002<\/li>\n<\/ul>\n<h2 id=\"fixing-the-hv014-fdw_too_many_handles-error-AbhiGACCHW\">\u4fee\u5fa9 HV014 &#8211; fdw_too_many_handles \u932f\u8aa4<\/h2>\n<p>\u8981\u89e3\u6c7a HV014 &#8211; fdw_too_many_handles \u932f\u8aa4\uff0c\u8acb\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u64cd\u4f5c\uff1a<\/p>\n<h3 id=\"1-check-system-resource-limits-AbhiGACCHW\">1. \u6aa2\u67e5\u7cfb\u7d71\u8cc7\u6e90\u9650\u5236<\/h3>\n<p>\u9a57\u8b49\u60a8\u7684\u64cd\u4f5c\u7cfb\u7d71\u5141\u8a31\u7684\u6700\u5927\u6587\u4ef6\u63cf\u8ff0\u7b26\u6578\u91cf\u3002\u60a8\u53ef\u4ee5\u901a\u904e\u904b\u884c\u4ee5\u4e0b\u547d\u4ee4\u4f86\u6aa2\u67e5\u6b64\u9650\u5236\uff1a<\/p>\n<pre><code>$ ulimit -n<\/code><\/pre>\n<p>\u5982\u679c\u9650\u5236\u904e\u4f4e\uff0c\u60a8\u53ef\u4ee5\u901a\u904e\u4fee\u6539\u7cfb\u7d71\u914d\u7f6e\u6587\u4ef6\u4f86\u589e\u52a0\u5b83\u3002\u8acb\u53c3\u95b1\u60a8\u7684\u64cd\u4f5c\u7cfb\u7d71\u6587\u6a94\u4ee5\u7372\u53d6\u5982\u4f55\u8abf\u6574\u6587\u4ef6\u63cf\u8ff0\u7b26\u9650\u5236\u7684\u8aaa\u660e\u3002<\/p>\n<h3 id=\"2-optimize-fdw-configuration-AbhiGACCHW\">2. \u512a\u5316 FDW \u914d\u7f6e<\/h3>\n<p>\u6aa2\u67e5 FDW \u7684\u914d\u7f6e\uff0c\u78ba\u4fdd\u5176\u6b63\u78ba\u8a2d\u7f6e\u3002\u6ce8\u610f\u8207\u6587\u4ef6\u63cf\u8ff0\u7b26\u7ba1\u7406\u6216\u8cc7\u6e90\u4f7f\u7528\u76f8\u95dc\u7684\u4efb\u4f55\u53c3\u6578\u3002\u6839\u64da\u9700\u8981\u8abf\u6574\u9019\u4e9b\u53c3\u6578\uff0c\u4ee5\u512a\u5316 FDW \u7684\u6027\u80fd\u548c\u8cc7\u6e90\u5229\u7528\u7387\u3002<\/p>\n<h3 id=\"3-limit-concurrent-connections-AbhiGACCHW\">3. \u9650\u5236\u4e26\u767c\u9023\u63a5<\/h3>\n<p>\u5982\u679c\u60a8\u6709\u591a\u500b\u9023\u63a5\u6216\u67e5\u8a62\u4f7f\u7528 FDW \u4e26\u4e14\u4f75\u767c\u91cf\u5f88\u9ad8\uff0c\u8003\u616e\u9650\u5236\u540c\u6642\u9023\u63a5\u7684\u6578\u91cf\u3002\u9019\u53ef\u4ee5\u5e6b\u52a9\u9632\u6b62 FDW \u9054\u5230\u6700\u5927\u6587\u4ef6\u63cf\u8ff0\u7b26\u6578\u91cf\u3002\u60a8\u53ef\u4ee5\u5728 PostgreSQL \u670d\u52d9\u5668\u914d\u7f6e\u6587\u4ef6\u4e2d\u914d\u7f6e\u9023\u63a5\u9650\u5236\u3002<\/p>\n<h3 id=\"4-monitor-and-optimize-queries-AbhiGACCHW\">4. \u76e3\u63a7\u548c\u512a\u5316\u67e5\u8a62<\/h3>\n<p>\u76e3\u63a7\u4f7f\u7528 FDW \u7684\u67e5\u8a62\uff0c\u4e26\u8b58\u5225\u4efb\u4f55\u6548\u7387\u4f4e\u4e0b\u6216\u8cc7\u6e90\u5bc6\u96c6\u578b\u7684\u67e5\u8a62\u3002\u512a\u5316\u9019\u4e9b\u67e5\u8a62\u4ee5\u6e1b\u5c11\u5c0d\u6587\u4ef6\u63cf\u8ff0\u7b26\u4f7f\u7528\u7684\u5f71\u97ff\u3002\u8003\u616e\u5c0d\u8868\u9032\u884c\u7d22\u5f15\u3001\u91cd\u5beb\u67e5\u8a62\u6216\u4f7f\u7528\u5176\u4ed6\u6027\u80fd\u8abf\u6574\u6280\u8853\u4f86\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<h2 id=\"summary-AbhiGACCHW\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u4e2d\u7684 HV014 &#8211; fdw_too_many_handles \u932f\u8aa4\u53ef\u80fd\u7531\u65bc\u6587\u4ef6\u63cf\u8ff0\u7b26\u6578\u91cf\u7684\u9650\u5236\u6216 FDW \u914d\u7f6e\u4e0d\u7576\u5f15\u8d77\u3002\u8981\u4fee\u5fa9\u6b64\u932f\u8aa4\uff0c\u8acb\u6aa2\u67e5\u7cfb\u7d71\u8cc7\u6e90\u9650\u5236\u3001\u512a\u5316 FDW \u914d\u7f6e\u3001\u9650\u5236\u4e26\u767c\u9023\u63a5\uff0c\u4e26\u76e3\u63a7\u548c\u512a\u5316\u67e5\u8a62\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u89e3\u6c7a HV014 \u932f\u8aa4\uff0c\u78ba\u4fdd PostgreSQL \u6578\u64da\u5eab\u7684\u5e73\u7a69\u904b\u884c\u3002<\/p>\n<p>\u5982\u9700\u53ef\u9760\u4e14\u9ad8\u6027\u80fd\u7684 VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002\u6211\u5011\u7684 VPS \u8a17\u7ba1\u670d\u52d9\u70ba\u904b\u884c PostgreSQL \u548c\u5176\u4ed6\u61c9\u7528\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u5b8c\u7f8e\u7684\u5e73\u53f0\uff0c\u5177\u6709\u5353\u8d8a\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\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":[4925],"tags":[],"class_list":["post-21485","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21485","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=21485"}],"version-history":[{"count":2,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21485\/revisions"}],"predecessor-version":[{"id":23988,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21485\/revisions\/23988"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}