{"id":21353,"date":"2024-01-02T07:58:24","date_gmt":"2024-01-02T07:58:24","guid":{"rendered":"https:\/\/server.hk\/blog\/21353\/"},"modified":"2024-11-14T10:36:08","modified_gmt":"2024-11-14T02:36:08","slug":"how-to-fix-postgresql-error-code-25008-held_cursor_requires_same_isolation_level","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21353\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a25008 – held_cursor_requires_same_isolation_level"},"content":{"rendered":"

\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a25008 – held_cursor_requires_same_isolation_level<\/h1>\n

PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u88ab\u5168\u7403\u7684\u958b\u767c\u8005\u548c\u4f01\u696d\u4f7f\u7528\u3002\u7136\u800c\uff0c\u8207\u6240\u6709\u8edf\u4ef6\u4e00\u6a23\uff0cPostgreSQL \u4e5f\u53ef\u80fd\u9047\u5230\u932f\u8aa4\uff0c\u5c0e\u81f4\u5176\u6b63\u5e38\u904b\u4f5c\u4e2d\u65b7\u3002\u5176\u4e2d\u4e00\u500b\u932f\u8aa4\u662f PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a25008 – held_cursor_requires_same_isolation_level\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u8a72\u932f\u8aa4\u7684\u542b\u7fa9\u4ee5\u53ca\u5982\u4f55\u4fee\u5fa9\u5b83\u3002<\/p>\n

\u4e86\u89e3 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a25008 – held_cursor_requires_same_isolation_level<\/h2>\n

\u7576\u60a8\u9047\u5230 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a25008 – held_cursor_requires_same_isolation_level \u6642\uff0c\u9019\u610f\u5473\u8457\u60a8\u6b63\u5728\u5617\u8a66\u57f7\u884c\u4e00\u500b\u67e5\u8a62\uff0c\u8a72\u67e5\u8a62\u5f15\u7528\u4e86\u4e00\u500b\u5728\u4e0d\u540c\u4e8b\u52d9\u6216\u4ee5\u4e0d\u540c\u9694\u96e2\u7d1a\u5225\u5275\u5efa\u7684\u6e38\u6a19\u3002PostgreSQL \u56b4\u683c\u57f7\u884c\u9694\u96e2\u7d1a\u5225\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u4e26\u9632\u6b62\u4e26\u767c\u4e8b\u52d9\u4e4b\u9593\u7684\u885d\u7a81\u3002\u7576\u60a8\u5617\u8a66\u8a2a\u554f\u4e00\u500b\u5728\u4e0d\u540c\u4e8b\u52d9\u6216\u4ee5\u4e0d\u540c\u9694\u96e2\u7d1a\u5225\u5275\u5efa\u7684\u6e38\u6a19\u6642\uff0c\u5c31\u6703\u767c\u751f\u6b64\u932f\u8aa4\u3002<\/p>\n

\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a25008 – held_cursor_requires_same_isolation_level<\/h2>\n

\u8981\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a25008 – held_cursor_requires_same_isolation_level\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u60a8\u6b63\u5728\u8a2a\u554f\u7684\u6e38\u6a19\u662f\u5728\u8207\u7576\u524d\u4e8b\u52d9\u76f8\u540c\u7684\u4e8b\u52d9\u4e2d\u6216\u4ee5\u76f8\u540c\u7684\u9694\u96e2\u7d1a\u5225\u5275\u5efa\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u9075\u5faa\u4ee5\u89e3\u6c7a\u6b64\u932f\u8aa4\uff1a<\/p>\n

    \n
  1. \u6aa2\u67e5\u9694\u96e2\u7d1a\u5225\uff1a<\/strong>\u9996\u5148\uff0c\u6aa2\u67e5\u7576\u524d\u4e8b\u52d9\u7684\u9694\u96e2\u7d1a\u5225\u3002\u60a8\u53ef\u4ee5\u901a\u904e\u904b\u884c\u4ee5\u4e0b\u67e5\u8a62\u4f86\u5b8c\u6210\u6b64\u64cd\u4f5c\uff1a<\/li>\n
    SELECT current_setting('transaction_isolation') AS isolation_level;<\/code><\/pre>\n
    \u7d50\u679c\u5c07\u662f\u4ee5\u4e0b\u9694\u96e2\u7d1a\u5225\u4e4b\u4e00\uff1a’read uncommitted’\u3001’read committed’\u3001’repeatable read’ \u6216 ‘serializable’\u3002<\/p>\n
  2. \u6aa2\u67e5\u6e38\u6a19\u5275\u5efa\uff1a<\/strong>\u63a5\u4e0b\u4f86\uff0c\u6aa2\u67e5\u6e38\u6a19\u5275\u5efa\u6642\u7684\u4e8b\u52d9\u548c\u9694\u96e2\u7d1a\u5225\u3002\u67e5\u627e\u5275\u5efa\u6e38\u6a19\u7684\u4ee3\u78bc\uff0c\u4e26\u9a57\u8b49\u5b83\u662f\u5426\u5728\u8207\u7576\u524d\u4e8b\u52d9\u76f8\u540c\u7684\u4e8b\u52d9\u4e2d\u4ee5\u76f8\u540c\u7684\u9694\u96e2\u7d1a\u5225\u5275\u5efa\u3002<\/li>\n
  3. \u91cd\u65b0\u5275\u5efa\u6e38\u6a19\uff1a<\/strong>\u5982\u679c\u6e38\u6a19\u662f\u5728\u4e0d\u540c\u4e8b\u52d9\u6216\u4ee5\u4e0d\u540c\u9694\u96e2\u7d1a\u5225\u5275\u5efa\u7684\uff0c\u60a8\u9700\u8981\u5728\u7576\u524d\u4e8b\u52d9\u4e2d\u91cd\u65b0\u5275\u5efa\u6e38\u6a19\u3002\u95dc\u9589\u73fe\u6709\u7684\u6e38\u6a19\uff0c\u7136\u5f8c\u4f7f\u7528\u6b63\u78ba\u7684\u4e8b\u52d9\u548c\u9694\u96e2\u7d1a\u5225\u5275\u5efa\u65b0\u7684\u6e38\u6a19\u3002<\/li>\n
    CLOSE cursor_name;\r\nDECLARE cursor_name CURSOR WITH HOLD FOR SELECT * FROM table_name;<\/code><\/pre>\n
    \u5c07 `cursor_name` \u66ff\u63db\u70ba\u60a8\u7684\u6e38\u6a19\u540d\u7a31\uff0c\u5c07 `table_name` \u66ff\u63db\u70ba\u60a8\u8981\u67e5\u8a62\u7684\u8868\u7684\u540d\u7a31\u3002<\/p>\n
  4. \u91cd\u8a66\u67e5\u8a62\uff1a<\/strong>\u4e00\u65e6\u91cd\u65b0\u5275\u5efa\u4e86\u6e38\u6a19\uff0c\u91cd\u8a66\u5f15\u8d77\u932f\u8aa4\u7684\u67e5\u8a62\u3002\u5982\u679c\u6e38\u6a19\u73fe\u5728\u662f\u5728\u8207\u7576\u524d\u4e8b\u52d9\u76f8\u540c\u7684\u4e8b\u52d9\u4e2d\u4ee5\u76f8\u540c\u7684\u9694\u96e2\u7d1a\u5225\u5275\u5efa\u7684\uff0c\u5247\u932f\u8aa4\u61c9\u4e0d\u518d\u767c\u751f\u3002<\/li>\n<\/ol>\n
    \u6309\u7167\u9019\u4e9b\u6b65\u9a5f\uff0c\u60a8\u61c9\u8a72\u80fd\u5920\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a25008 – held_cursor_requires_same_isolation_level\uff0c\u4e26\u7e7c\u7e8c\u7121\u554f\u984c\u5730\u4f7f\u7528 PostgreSQL\u3002<\/p>\n
    \u7e3d\u7d50<\/h2>\n
    PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a25008 – held_cursor_requires_same_isolation_level \u53ef\u4ee5\u901a\u904e\u78ba\u4fdd\u60a8\u6b63\u5728\u8a2a\u554f\u7684\u6e38\u6a19\u662f\u5728\u8207\u7576\u524d\u4e8b\u52d9\u76f8\u540c\u7684\u4e8b\u52d9\u4e2d\u6216\u4ee5\u76f8\u540c\u7684\u9694\u96e2\u7d1a\u5225\u5275\u5efa\u4f86\u89e3\u6c7a\u3002\u901a\u904e\u6aa2\u67e5\u9694\u96e2\u7d1a\u5225\u3001\u9a57\u8b49\u6e38\u6a19\u5275\u5efa\u3001\u5982\u6709\u5fc5\u8981\u91cd\u65b0\u5275\u5efa\u6e38\u6a19\u4ee5\u53ca\u91cd\u8a66\u67e5\u8a62\uff0c\u60a8\u53ef\u4ee5\u4fee\u5fa9\u6b64\u932f\u8aa4\u4e26\u9806\u5229\u4f7f\u7528 PostgreSQL\u3002<\/p>\n
    \u5982\u679c\u60a8\u9047\u5230 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a25008 – held_cursor_requires_same_isolation_level\uff0c\u8003\u616e\u4f7f\u7528 Server.HK \u4f86\u7372\u5f97\u53ef\u9760\u4e14\u9ad8\u6548\u80fd\u7684 VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\u3002\u6211\u5011\u7684 \u9999\u6e2f VPS<\/a> \u8a17\u7ba1\u670d\u52d9\u65e8\u5728\u6eff\u8db3\u958b\u767c\u8005\u548c\u4f01\u696d\u7684\u9700\u6c42\uff0c\u63d0\u4f9b\u5353\u8d8a\u7684\u6027\u80fd\u3001\u5b89\u5168\u6027\u548c\u652f\u6301\u3002\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u6211\u5011\u7684\u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\u4ee5\u53ca\u6211\u5011\u5982\u4f55\u5e6b\u52a9\u60a8\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5982\u4f55\u4fee\u5fa9 PostgreSQL ...<\/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-21353","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21353","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=21353"}],"version-history":[{"count":2,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21353\/revisions"}],"predecessor-version":[{"id":24146,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21353\/revisions\/24146"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}