{"id":41530,"date":"2024-01-15T19:20:10","date_gmt":"2023-04-06T01:55:33","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e9%80%9a%e8%bf%87%e9%94%99%e8%af%af%e6%9d%a5%e7%90%86%e8%a7%a3postgresql\/"},"modified":"2024-05-04T18:33:44","modified_gmt":"2024-05-04T10:33:44","slug":"%e9%80%9a%e8%bf%87%e9%94%99%e8%af%af%e6%9d%a5%e7%90%86%e8%a7%a3postgresql","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e9%80%9a%e8%bf%87%e9%94%99%e8%af%af%e6%9d%a5%e7%90%86%e8%a7%a3postgresql\/","title":{"rendered":"\u901a\u8fc7\u9519\u8bef\u6765\u7406\u89e3PostgreSQL"},"content":{"rendered":"<h2>\u9996\u5148<\/h2>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u662f\u5728\u8fea\u666e\u80a1\u4efd\u6709\u9650\u516c\u53f82023\u5e74\u7684\u5723\u8bde\u8282\u65e5\u5386\u7684\u7b2c\u4e00\u5929\u53d1\u5e03\u7684\uff01<\/p>\n<h2>\u5173\u4e8e\u8fd9\u7bc7\u6587\u7ae0<\/h2>\n<p>\u4f60\u77e5\u9053\u9519\u8bef\u5417\uff1f\u4f60\u5bf9PostgreSQL\u4e0d\u592a\u4e86\u89e3\u5427\uff1f<\/p>\n<p>\u9019\u7bc7\u6587\u7ae0\u7684\u76ee\u7684\u662f\u70ba\u4e86\u8b93\u4eba\u80fd\u5920\u7406\u89e3\u90a3\u4e9b\u96e3\u4ee5\u7406\u89e3\u7684\u4e8b\u60c5\u3002\u5b83\u5c07\u5e6b\u52a9\u4f60\u77ad\u89e3\u932f\u8aa4\u7684\u76f8\u95dc\u77e5\u8b58\uff0c\u540c\u6642\u4e5f\u80fd\u589e\u9032\u5c0d\u65bcPostgreSQL\u7684\u7406\u89e3\u3002<\/p>\n<h2>\u901a\u8fc7\u9605\u8bfb\u6587\u7ae0\u53ef\u4ee5\u83b7\u5f97\u4ec0\u4e48\u4fe1\u606f<\/h2>\n<p>\u901a\u8fc7\u4e86\u89e3\u4ee5\u4e0b\u5185\u5bb9\uff0c\u60a8\u5c06\u66f4\u6df1\u5165\u5730\u4e86\u89e3PostgreSQL\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u306b\u95a2\u308f\u308b\u30a8\u30e9\u30fc<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">PostgreSQL\u5185\u306e\u51e6\u7406\u306b\u3064\u3044\u3066<\/ul>\n<h2>\u901a\u8fc7\u9519\u8bef\u6765\u7406\u89e3PostgreSQL\u3002<\/h2>\n<p>\u6211\u4eec\u7acb\u5373\u8fdb\u5165\u6b63\u9898\u5427\u3002<\/p>\n<h3>\u6709\u5173PostgreSQL\u7684\u5904\u7406<\/h3>\n<p>\u9996\u5148\u8981\u52a0\u6df1\u5bf9PostgreSQL\u5904\u7406\u7684\u7406\u89e3\u3002<br \/>\n\u5728\u53d1\u9001\u7ed9PostgreSQL\u670d\u52a1\u5668\u7684\u8bf7\u6c42\u4e4b\u540e\uff0c\u5982\u679c\u5728\u6536\u5230\u8fd4\u56de\u4e4b\u524d\uff08\u67e5\u8be2\uff09\u671f\u95f4\u6ca1\u6709\u7406\u89e3\uff0c\u90a3\u4e48\u5f88\u96be\u786e\u5b9a\u9519\u8bef\u7684\u539f\u56e0\u3002\u5177\u4f53\u800c\u8a00\uff0c\u53ef\u80fd\u4f1a\u5728\u5904\u7406SQL\u8bed\u6cd5\u9519\u8bef\u7684\u540c\u65f6\u8fd8\u8fdb\u884c\u7f51\u7edc\u8c03\u67e5\u7b49\u3002\u5982\u679c\u4e0d\u4ed4\u7ec6\u9605\u8bfb\u9519\u8bef\u5e76\u7406\u89e3\uff0c\u53ef\u80fd\u4f1a\u91c7\u53d6\u9519\u8bef\u7684\u884c\u52a8\uff0c\u56e0\u6b64\u9700\u8981\u6df1\u5165\u4e86\u89e3\u5904\u7406\u8fc7\u7a0b\uff0c\u4ee5\u4fbf\u4e86\u89e3\u5728PostgreSQL\u7684\u54ea\u4e2a\u90e8\u5206\u51fa\u73b0\u4e86\u4ec0\u4e48\u9519\u8bef\u3002<\/p>\n<p>\u6211\u7528\u4e00\u5f20\u56fe\u603b\u7ed3\u4e86\u975e\u5e38\u7b80\u6d01\u7684\u6d41\u7a0b\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d471237434c4406ca7134\/13-0.png\" alt=\"\u554f\u3044\u5408\u308f\u305b\u51e6\u7406\u306e\u6d41\u308c.drawio.png\" \/><\/div>\n<p>\u56fe\u5185\u5bb9\u5982\u4e0b\uff1a<br \/>\n1. \u4ece\u5ba2\u6237\u7aef\u8bf7\u6c42\u8fde\u63a5\u3002<br \/>\n2. \u5982\u679c\u6ca1\u6709\u95ee\u9898\uff0c\u5efa\u7acb\u8fde\u63a5\u3002<br \/>\n3. \u4ece\u5ba2\u6237\u7aef\u53d1\u51faSQL\u67e5\u8be2\u3002<br \/>\n4. \u5b8c\u6210\u5185\u90e8\u5904\u7406\u5e76\u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n<p>\u73b0\u5728\u6211\u4eec\u5bf9\u5904\u7406\u6d41\u7a0b\u6709\u4e86\u57fa\u672c\u7684\u4e86\u89e3\uff0c\u63a5\u4e0b\u6765\u8ba9\u6211\u4eec\u52a0\u6df1\u5bf9PostgreSQL\u7684\u7406\u89e3\uff0c\u5305\u62ec\u9519\u8bef\u5904\u7406\u3002<\/p>\n<h3>\u9519\u8bef\u548cPostgreSQL\u7684\u5904\u7406<\/h3>\n<p>\u4ece\u8fd9\u91cc\u5f00\u59cb\uff0c\u6211\u4eec\u5c06\u5171\u4eab\u6709\u5173\u9519\u8bef\u7684\u4fe1\u606f\u3002<br \/>\n\u6211\u4eec\u8fd8\u5c06\u603b\u7ed3\u9519\u8bef\u53d1\u751f\u5728PostgreSQL\u5904\u7406\u7684\u54ea\u4e2a\u5730\u65b9\u4ee5\u53ca\u5982\u4f55\u53d1\u751f\u7684\u4fe1\u606f\u3002<\/p>\n<h4>\u4e25\u91cd\u9519\u8bef\uff1a\u5269\u4f59\u7684\u8fde\u63a5\u69fd\u88ab\u4fdd\u7559\u7528\u4e8e\u975e\u590d\u5236\u8d85\u7ea7\u7528\u6237\u8fde\u63a5\u3002<\/h4>\n<p>\u5f53\u8bf7\u6c42\u4f7f\u7528\u7b2c\u2460\u4e2a\u8fde\u63a5\u65f6\uff0c\u9519\u8bef\u5c06\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<p>\u9519\u8bef\u6d88\u606f\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nt\">-bash-4<\/span>.2<span class=\"nv\">$ <\/span>psql <span class=\"nt\">-U<\/span> <span class=\"nb\">test\r\n<\/span>\u30e6\u30fc\u30b6 <span class=\"nb\">test <\/span>\u306e\u30d1\u30b9\u30ef\u30fc\u30c9:\r\npsql: FATAL: remaining connection slots are reserved <span class=\"k\">for <\/span>non-replication superuser connections\r\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u542f\u52a8\u4e00\u4e2a\u9488\u5bf9\u8fde\u63a5\u7684\u72ec\u7acb\u8fdb\u7a0b\uff0c\u4f46\u662f\u53ef\u4ee5\u901a\u8fc7max_connections\u53c2\u6570\u6307\u5b9a\u8be5\u8fdb\u7a0b\u7684\u6700\u5927\u6570\u91cf\u3002<br \/>\n\u7531\u4e8esuperuser_reserved_connections\u53c2\u6570\u4e3a\u8d85\u7ea7\u7528\u6237\u8fde\u63a5\u9884\u7559\u4e86\u7a7a\u4f4d\uff0c\u6240\u4ee5\u5f53\u975e\u8d85\u7ea7\u7528\u6237\u65e0\u6cd5\u8fde\u63a5\u65f6\u4f1a\u51fa\u73b0\u9519\u8bef\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d471237434c4406ca7134\/22-0.png\" alt=\"fatal_connections.drawio.png\" \/><\/div>\n<h4>\u9519\u8bef\uff1a\u5728\u201cserect\u201d\u5904\u9644\u8fd1\u51fa\u73b0\u8bed\u6cd5\u9519\u8bef\u3002<\/h4>\n<p>\u5982\u679c\u6267\u884c\u9519\u8bef\u7684SQL\u8bed\u53e5\uff0c\u5c06\u4f1a\u53d1\u751f\u9519\u8bef\u3002\u4f8b\u5982\u4ee5\u4e0b\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"n\">serect<\/span> <span class=\"o\">*<\/span> <span class=\"k\">from<\/span> <span class=\"k\">table<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">ERROR<\/span><span class=\"p\">:<\/span>  <span class=\"n\">syntax<\/span> <span class=\"n\">error<\/span> <span class=\"k\">at<\/span> <span class=\"k\">or<\/span> <span class=\"n\">near<\/span> <span class=\"nv\">\"serect\"<\/span>\r\n<span class=\"n\">LINE<\/span> <span class=\"mi\">1<\/span><span class=\"p\">:<\/span> <span class=\"n\">serect<\/span> <span class=\"o\">*<\/span> <span class=\"k\">from<\/span> <span class=\"k\">table<\/span><span class=\"p\">;<\/span>\r\n      <span class=\"o\">^<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8bed\u6cd5\u5206\u6790\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u9519\u8bef\u3002<br \/>\n\u5177\u4f53\u6765\u8bf4\uff0c\u5728\u521d\u59cb\u89e3\u6790\uff08\u89e3\u6790\uff09\u9636\u6bb5\u68c0\u67e5\u8bed\u6cd5\u662f\u5426\u6b63\u786e\u65f6\u53d1\u751f\u9519\u8bef\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d471237434c4406ca7134\/27-0.png\" alt=\"error_syntax.drawio.png\" \/><\/div>\n<h4>\u9519\u8bef\uff1a\u5173\u7cfb\u201cxxx\u201d\u4e0d\u5b58\u5728\u3002<\/h4>\n<p>\u5f53\u6307\u5b9a\u7684\u8868\u683c\u4e0d\u5b58\u5728\u65f6\u4f1a\u51fa\u73b0\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"k\">select<\/span> <span class=\"o\">*<\/span> <span class=\"k\">from<\/span> <span class=\"n\">aaa<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">ERROR<\/span><span class=\"p\">:<\/span>  <span class=\"n\">relation<\/span> <span class=\"nv\">\"aaa\"<\/span> <span class=\"n\">does<\/span> <span class=\"k\">not<\/span> <span class=\"n\">exist<\/span>\r\n<span class=\"n\">LINE<\/span> <span class=\"mi\">1<\/span><span class=\"p\">:<\/span> <span class=\"k\">select<\/span> <span class=\"o\">*<\/span> <span class=\"k\">from<\/span> <span class=\"n\">aaa<\/span><span class=\"p\">;<\/span>\r\n                      <span class=\"o\">^<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u9519\u8bef\u5728\u8ba1\u5212\/\u4f18\u5316\u6b65\u9aa4\u4e2d\u51fa\u73b0\u7684\u9519\u8bef\u3002<br \/>\n\u8ba1\u5212\/\u4f18\u5316\u7a0b\u5e8f\u4ece\u751f\u6210\u7528\u4e8e\u5728\u67e5\u8be2\u4e2d\u626b\u63cf\u6bcf\u4e2a\u5173\u7cfb\uff08\u8868\uff09\u7684\u8ba1\u5212\u5f00\u59cb\u3002\u56e0\u6b64\uff0c\u5728\u6b64\u8fc7\u7a0b\u4e2d\u4f1a\u8fdb\u884c\u8868\u7b49\u7684\u5b58\u5728\u786e\u8ba4\uff0c\u5982\u679c\u4e0d\u5b58\u5728\u5219\u4f1a\u51fa\u9519\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d471237434c4406ca7134\/32-0.png\" alt=\"error_relation.drawio.png\" \/><\/div>\n<h4>\u8fd0\u884c\u65f6\u9519\u8bef<\/h4>\n<p>\u5f53\u8bd5\u56fe\u5bf9\u76ee\u6807\u5bf9\u8c61\u8fdb\u884c\u64cd\u4f5c\uff0c\u4f46\u6ca1\u6709\u76f8\u5e94\u6743\u9650\u65f6\uff0c\u4f1a\u51fa\u73b0\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"k\">select<\/span> <span class=\"o\">*<\/span> <span class=\"k\">from<\/span> <span class=\"n\">aaa<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">ERROR<\/span><span class=\"p\">:<\/span>  <span class=\"n\">permission<\/span> <span class=\"n\">denied<\/span> <span class=\"k\">for<\/span> <span class=\"k\">table<\/span> <span class=\"n\">aaa<\/span>\r\n                      <span class=\"o\">^<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8ba1\u5212\u8005\uff0f\u4f18\u5316\u5668\u9636\u6bb5\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u3002<br \/>\n\u5728\u6267\u884c\u8ba1\u5212\u521b\u5efa\u5b8c\u6210\u540e\uff0c\u5728\u67e5\u8be2\u6267\u884c\u4e4b\u524d\u4f1a\u8fdb\u884c\u6743\u9650\u68c0\u67e5\u3002<br \/>\n\u5982\u679c\u6ca1\u6709\u6240\u9700\u7684\u6743\u9650\uff0c\u5219\u4f1a\u4ea7\u751f\u9519\u8bef\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d471237434c4406ca7134\/37-0.png\" alt=\"error_relation.drawio.png\" \/><\/div>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u8fd9\u6b21\u603b\u7ed3\u7684\u5185\u5bb9\u8fd8\u6709\u4e00\u4e9b\u4e0d\u5b8c\u6574\u7684\u90e8\u5206\u3002\u6bd4\u5982\u5728\u89e3\u6790\u5668\u548c\u91cd\u5199\u8fc7\u7a0b\u4e4b\u95f4\u4f3c\u4e4e\u6709\u4e00\u4e2a\u540d\u4e3a\u5206\u6790\u5668\u7684\u9636\u6bb5\uff0c\u4f46\u7531\u4e8e\u627e\u4e0d\u5230\u53ef\u9760\u7684\u6587\u7ae0\uff0c\u6240\u4ee5\u6211\u5e0c\u671b\u4eca\u540e\u80fd\u52a0\u6df1\u5bf9\u67e5\u8be2\u5904\u7406\u7684\u7406\u89e3\u3002\u5c3d\u7ba1\u5982\u6b64\uff0c\u6211\u8ba4\u4e3a\u901a\u8fc7\u7b80\u5355\u5730\u7406\u89e3\u5904\u7406\u8fc7\u7a0b\uff0c\u80fd\u591f\u6269\u5927\u5e94\u5bf9\u7684\u8303\u56f4\uff0c\u6240\u4ee5\u8bf7\u52a1\u5fc5\u501f\u6b64\u6587\u7ae0\u6765\u8fdb\u4e00\u6b65\u52a0\u6df1\u7406\u89e3\u3002<\/p>\n<h2>\u8bf7\u53c2\u8003\u3002<\/h2>\n<p>\u5b66\u4e60PostgreSQL\u4ece\u5185\u90e8\u7ed3\u6784\u2015\u8bbe\u8ba1\u548c\u8fd0\u7ef4\u8ba1\u5212\u7684\u51c6\u5219<br \/>\nPostgreSQL\u5185\u90e8\u6982\u8ff0<br \/>\n\u9762\u5411Oracle\u6280\u672f\u4eba\u5458\u7684PostgreSQL\u81ea\u5b66\u4e66<br \/>\nPostgreSQL\u5165\u95e8\u223c\u67e5\u8be2\u5904\u7406\u7bc7\u223c<br \/>\nPostgreSQL: \u67e5\u8be2\u5904\u7406<\/p>\n<section>\u5173\u4e8e\u8fde\u63a5\u7684\u7ec6\u8282\u88ab\u7701\u7565\u4e86\u3002<\/section>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u8fd9\u7bc7\u6587\u7ae0\u662f\u5728\u8fea\u666e\u80a1\u4efd\u6709\u9650\u516c\u53f82023\u5e74\u7684\u5723\u8bde\u8282\u65e5\u5386\u7684\u7b2c\u4e00\u5929\u53d1\u5e03\u7684\uff01 \u5173\u4e8e\u8fd9\u7bc7\u6587\u7ae0 \u4f60\u77e5\u9053\u9519\u8bef\u5417\uff1f\u4f60\u5bf9Po [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-41530","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u901a\u8fc7\u9519\u8bef\u6765\u7406\u89e3PostgreSQL - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u901a\u8fc7\u9519\u8bef\u6765\u7406\u89e3postgresql\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u901a\u8fc7\u9519\u8bef\u6765\u7406\u89e3PostgreSQL\" \/>\n<meta property=\"og:description\" content=\"\u9996\u5148 \u8fd9\u7bc7\u6587\u7ae0\u662f\u5728\u8fea\u666e\u80a1\u4efd\u6709\u9650\u516c\u53f82023\u5e74\u7684\u5723\u8bde\u8282\u65e5\u5386\u7684\u7b2c\u4e00\u5929\u53d1\u5e03\u7684\uff01 \u5173\u4e8e\u8fd9\u7bc7\u6587\u7ae0 \u4f60\u77e5\u9053\u9519\u8bef\u5417\uff1f\u4f60\u5bf9Po 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