{"id":21432,"date":"2024-01-02T09:17:23","date_gmt":"2024-01-02T09:17:23","guid":{"rendered":"https:\/\/server.hk\/blog\/21432\/"},"modified":"2024-11-14T10:34:30","modified_gmt":"2024-11-14T02:34:30","slug":"how-to-fix-postgresql-error-code-42p11-invalid_cursor_definition","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21432\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P11 &#8211; invalid_cursor_definition"},"content":{"rendered":"<h1 id=\"how-to-fix-postgresql-error-code-42p11-invalid_cursor_definition-bfedKyEbJv\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P11 &#8211; invalid_cursor_definition<\/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\u7a0b\u5e8f\u3002\u7136\u800c\uff0c\u8207\u6240\u6709\u8edf\u4ef6\u4e00\u6a23\uff0c\u5b83\u53ef\u80fd\u6703\u9047\u5230\u932f\u8aa4\uff0c\u5f9e\u800c\u4e2d\u65b7\u6b63\u5e38\u904b\u884c\u3002\u5176\u4e2d\u4e00\u500b\u932f\u8aa4\u662f PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P11 &#8211; invalid_cursor_definition\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u8a72\u932f\u8aa4\u7684\u6210\u56e0\u4e26\u63d0\u4f9b\u9010\u6b65\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u4fee\u5fa9\u5b83\u3002<\/p>\n<h2 id=\"understanding-the-error-bfedKyEbJv\">\u4e86\u89e3\u932f\u8aa4<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P11 &#8211; invalid_cursor_definition \u767c\u751f\u5728 PostgreSQL \u6578\u64da\u5eab\u4e2d\u7684\u6e38\u6a19\u5b9a\u7fa9\u6709\u554f\u984c\u6642\u3002\u6e38\u6a19\u662f\u4e00\u7a2e\u6578\u64da\u5eab\u5c0d\u8c61\uff0c\u5141\u8a31\u4f60\u6aa2\u7d22\u548c\u64cd\u4f5c\u7d50\u679c\u96c6\u4e2d\u7684\u6578\u64da\u3002\u7576\u6e38\u6a19\u5b9a\u7fa9\u7121\u6548\u6642\uff0c\u5b83\u6703\u963b\u6b62\u67e5\u8a62\u7684\u6b63\u78ba\u57f7\u884c\uff0c\u4e26\u53ef\u80fd\u5c0e\u81f4\u610f\u5916\u7684\u884c\u70ba\u3002<\/p>\n<h2 id=\"possible-causes-bfedKyEbJv\">\u53ef\u80fd\u7684\u539f\u56e0<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P11 &#8211; invalid_cursor_definition \u53ef\u80fd\u6709\u5e7e\u500b\u6f5b\u5728\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u6e38\u6a19\u8072\u660e\u932f\u8aa4\uff1a<\/strong> \u6e38\u6a19\u8072\u660e\u53ef\u80fd\u5305\u542b\u8a9e\u6cd5\u932f\u8aa4\uff0c\u6216\u5f15\u7528\u4e86\u4e0d\u5b58\u5728\u7684\u8868\u6216\u5217\u3002<\/li>\n<li><strong>\u6e38\u6a19\u9078\u9805\u7121\u6548\uff1a<\/strong> \u8072\u660e\u4e2d\u7684\u6e38\u6a19\u9078\u9805\u53ef\u80fd\u4e0d\u6b63\u78ba\u6216\u8207\u67e5\u8a62\u4e0d\u517c\u5bb9\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u67b6\u69cb\u8b8a\u66f4\uff1a<\/strong> \u5982\u679c\u6700\u8fd1\u5c0d\u6578\u64da\u5eab\u67b6\u69cb\u9032\u884c\u4e86\u66f4\u6539\uff0c\u5982\u8868\u6216\u5217\u7684\u4fee\u6539\uff0c\u9019\u53ef\u80fd\u4f7f\u73fe\u6709\u7684\u6e38\u6a19\u5b9a\u7fa9\u7121\u6548\u3002<\/li>\n<\/ul>\n<h2 id=\"fixing-the-error-bfedKyEbJv\">\u89e3\u6c7a\u932f\u8aa4<\/h2>\n<p>\u8981\u89e3\u6c7a PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P11 &#8211; invalid_cursor_definition\uff0c\u8acb\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u64cd\u4f5c\uff1a<\/p>\n<h3 id=\"step-1-review-cursor-declaration-bfedKyEbJv\">\u6b65\u9a5f1\uff1a\u6aa2\u67e5\u6e38\u6a19\u8072\u660e<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u4ee3\u78bc\u6216\u67e5\u8a62\u4e2d\u7684\u6e38\u6a19\u8072\u660e\u3002\u78ba\u4fdd\u8a9e\u6cd5\u6b63\u78ba\uff0c\u4e26\u4e14\u6240\u6709\u5f15\u7528\u7684\u8868\u548c\u5217\u90fd\u5b58\u5728\u65bc\u6578\u64da\u5eab\u4e2d\u3002\u6ce8\u610f\u53ef\u80fd\u5c0e\u81f4\u932f\u8aa4\u7684\u62fc\u5beb\u932f\u8aa4\u6216\u7f3a\u5931\u5143\u7d20\u3002<\/p>\n<h3 id=\"step-2-check-cursor-options-bfedKyEbJv\">\u6b65\u9a5f2\uff1a\u6aa2\u67e5\u6e38\u6a19\u9078\u9805<\/h3>\n<p>\u78ba\u8a8d\u8072\u660e\u4e2d\u7684\u6e38\u6a19\u9078\u9805\u662f\u5426\u9069\u5408\u4f60\u6b63\u5728\u57f7\u884c\u7684\u67e5\u8a62\u3002\u53c3\u95b1 PostgreSQL \u6587\u6a94\uff0c\u4e86\u89e3\u6709\u6548\u7684\u6e38\u6a19\u9078\u9805\u53ca\u5176\u7528\u6cd5\u3002\u6839\u64da\u9700\u8981\u9032\u884c\u8abf\u6574\uff0c\u4ee5\u78ba\u4fdd\u517c\u5bb9\u6027\u3002<\/p>\n<h3 id=\"step-3-refresh-cursor-definitions-bfedKyEbJv\">\u6b65\u9a5f3\uff1a\u5237\u65b0\u6e38\u6a19\u5b9a\u7fa9<\/h3>\n<p>\u5982\u679c\u4f60\u6700\u8fd1\u5c0d\u6578\u64da\u5eab\u67b6\u69cb\u9032\u884c\u4e86\u66f4\u6539\uff0c\u5982\u6dfb\u52a0\u6216\u4fee\u6539\u8868\u6216\u5217\uff0c\u5247\u9700\u8981\u5237\u65b0\u6e38\u6a19\u5b9a\u7fa9\u3002\u53ef\u4ee5\u901a\u904e\u91cd\u65b0\u7de8\u8b6f\u6216\u91cd\u65b0\u5b9a\u7fa9\u4ee3\u78bc\u6216\u67e5\u8a62\u4e2d\u7684\u6e38\u6a19\u4f86\u5b8c\u6210\u3002\u78ba\u4fdd\u6e38\u6a19\u5b9a\u7fa9\u8207\u66f4\u65b0\u5f8c\u7684\u67b6\u69cb\u4e00\u81f4\u3002<\/p>\n<h3 id=\"step-4-test-and-debug-bfedKyEbJv\">\u6b65\u9a5f4\uff1a\u6e2c\u8a66\u548c\u8abf\u8a66<\/h3>\n<p>\u5728\u5b8c\u6210\u5fc5\u8981\u7684\u66f4\u6539\u5f8c\uff0c\u6e2c\u8a66\u4f60\u7684\u4ee3\u78bc\u6216\u67e5\u8a62\uff0c\u4ee5\u78ba\u4fdd\u4e0d\u518d\u51fa\u73fe PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P11 &#8211; invalid_cursor_definition\u3002\u5982\u679c\u932f\u8aa4\u4ecd\u7136\u5b58\u5728\uff0c\u8acb\u6aa2\u67e5\u4ee3\u78bc\u4e2d\u662f\u5426\u5b58\u5728\u5176\u4ed6\u6f5b\u5728\u554f\u984c\uff0c\u6216\u5c0b\u6c42 PostgreSQL \u793e\u7fa4\u7684\u9032\u4e00\u6b65\u5e6b\u52a9\u3002<\/p>\n<h2 id=\"summary-bfedKyEbJv\">\u7e3d\u7d50<\/h2>\n<p>\u7e3d\u4e4b\uff0cPostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P11 &#8211; invalid_cursor_definition \u53ef\u4ee5\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5\u548c\u4fee\u6b63\u6e38\u6a19\u8072\u660e\u3001\u6aa2\u67e5\u6e38\u6a19\u9078\u9805\u3001\u5728\u67b6\u69cb\u8b8a\u66f4\u5f8c\u5237\u65b0\u6e38\u6a19\u5b9a\u7fa9\u4ee5\u53ca\u5fb9\u5e95\u6e2c\u8a66\u4f86\u89e3\u6c7a\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u6b65\u9a5f\uff0c\u4f60\u53ef\u4ee5\u514b\u670d\u6b64\u932f\u8aa4\uff0c\u4e26\u78ba\u4fdd\u4f60\u7684 PostgreSQL \u6578\u64da\u5eab\u9806\u5229\u904b\u884c\u3002<\/p>\n<p>\u5982\u9700\u53ef\u9760\u4e14\u9ad8\u6548\u80fd\u7684 VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8003\u616e <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002\u6211\u5011\u64c1\u6709\u6700\u5148\u9032\u7684\u57fa\u790e\u8a2d\u65bd\u548c\u5353\u8d8a\u7684\u5ba2\u6236\u652f\u6301\uff0c\u63d0\u4f9b\u591a\u7a2e\u8a17\u7ba1\u65b9\u6848\u4ee5\u6eff\u8db3\u4f60\u7684\u7279\u5b9a\u9700\u6c42\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-21432","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21432","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=21432"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21432\/revisions"}],"predecessor-version":[{"id":24054,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21432\/revisions\/24054"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}