{"id":178968,"date":"2024-11-08T21:54:20","date_gmt":"2024-11-08T13:54:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178968\/"},"modified":"2024-11-08T21:54:21","modified_gmt":"2024-11-08T13:54:21","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a40001-serialization_failure%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178968\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a40001 &#8211; serialization_failure\uff1f"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a40001-serialization_failure-kZqybuFfRT\">\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a40001 &#8211; serialization_failure<\/h1>\n<p>\u5728\u4f7f\u7528PostgreSQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u932f\u8aa4\u4ee3\u78bc40001\uff0c\u9019\u662f\u4e00\u7a2e\u5e8f\u5217\u5316\u5931\u6557\u7684\u932f\u8aa4\u3002\u9019\u7a2e\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u4f7f\u7528\u4e8b\u52d9\u6642\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4f75\u767c\u74b0\u5883\u4e2d\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0-kZqybuFfRT\">\u932f\u8aa4\u539f\u56e0<\/h2>\n<p>PostgreSQL\u4f7f\u7528\u591a\u7248\u672c\u4e26\u767c\u63a7\u5236\uff08MVCC\uff09\u4f86\u7ba1\u7406\u6578\u64da\u7684\u4e26\u767c\u8a2a\u554f\u3002\u7576\u591a\u500b\u4e8b\u52d9\u540c\u6642\u5617\u8a66\u4fee\u6539\u76f8\u540c\u7684\u6578\u64da\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u5e8f\u5217\u5316\u5931\u6557\u3002\u5177\u9ad4\u4f86\u8aaa\uff0c\u7576\u4e00\u500b\u4e8b\u52d9\u5728\u63d0\u4ea4\u6642\uff0c\u767c\u73fe\u5176\u6240\u4f9d\u8cf4\u7684\u6578\u64da\u5df2\u7d93\u88ab\u5176\u4ed6\u4e8b\u52d9\u4fee\u6539\uff0c\u9019\u6642\u5c31\u6703\u51fa\u73fe40001\u932f\u8aa4\u3002<\/p>\n<ul>\n<li><strong>\u9ad8\u4f75\u767c\u74b0\u5883\uff1a<\/strong>\u5728\u9ad8\u4f75\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u4e8b\u52d9\u4e4b\u9593\u7684\u76f8\u4e92\u5f71\u97ff\u6703\u589e\u52a0\uff0c\u5f9e\u800c\u5c0e\u81f4\u5e8f\u5217\u5316\u5931\u6557\u3002<\/li>\n<li><strong>\u9577\u6642\u9593\u904b\u884c\u7684\u4e8b\u52d9\uff1a<\/strong>\u5982\u679c\u4e00\u500b\u4e8b\u52d9\u904b\u884c\u6642\u9593\u904e\u9577\uff0c\u53ef\u80fd\u6703\u963b\u585e\u5176\u4ed6\u4e8b\u52d9\uff0c\u589e\u52a0\u51fa\u73fe\u932f\u8aa4\u7684\u6a5f\u6703\u3002<\/li>\n<li><strong>\u4e0d\u7576\u7684\u4e8b\u52d9\u8a2d\u8a08\uff1a<\/strong>\u5982\u679c\u4e8b\u52d9\u7684\u8a2d\u8a08\u4e0d\u5408\u7406\uff0c\u4f8b\u5982\u5728\u540c\u4e00\u4e8b\u52d9\u4e2d\u57f7\u884c\u591a\u500b\u66f4\u65b0\u64cd\u4f5c\uff0c\u4e5f\u53ef\u80fd\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-kZqybuFfRT\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u4fee\u5fa9PostgreSQL\u768440001\u932f\u8aa4\u9700\u8981\u5f9e\u591a\u500b\u65b9\u9762\u5165\u624b\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e9%87%8d%e8%a9%a6%e6%a9%9f%e5%88%b6-kZqybuFfRT\">1. \u91cd\u8a66\u6a5f\u5236<\/h3>\n<p>\u7531\u65bc\u5e8f\u5217\u5316\u5931\u6557\u901a\u5e38\u662f\u66ab\u6642\u6027\u7684\uff0c\u56e0\u6b64\u5be6\u65bd\u91cd\u8a66\u6a5f\u5236\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u7576\u6355\u7372\u523040001\u932f\u8aa4\u6642\uff0c\u53ef\u4ee5\u9078\u64c7\u91cd\u65b0\u57f7\u884c\u8a72\u4e8b\u52d9\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u91cd\u8a66\u908f\u8f2f\u793a\u4f8b\uff1a<\/p>\n<pre><code>def execute_transaction():\n    try:\n        # \u958b\u59cb\u4e8b\u52d9\n        with connection.cursor() as cursor:\n            cursor.execute(\"BEGIN;\")\n            # \u57f7\u884cSQL\u64cd\u4f5c\n            cursor.execute(\"UPDATE table_name SET column_name = value WHERE condition;\")\n            # \u63d0\u4ea4\u4e8b\u52d9\n            cursor.execute(\"COMMIT;\")\n    except Exception as e:\n        if e.pgcode == '40001':\n            # \u6355\u7372\u5e8f\u5217\u5316\u5931\u6557\u932f\u8aa4\uff0c\u91cd\u8a66\n            execute_transaction()\n        else:\n            # \u8655\u7406\u5176\u4ed6\u932f\u8aa4\n            print(\"\u5176\u4ed6\u932f\u8aa4:\", e)\n<\/code><\/pre>\n<h3 id=\"2-%e5%84%aa%e5%8c%96%e4%ba%8b%e5%8b%99-kZqybuFfRT\">2. \u512a\u5316\u4e8b\u52d9<\/h3>\n<p>\u78ba\u4fdd\u4e8b\u52d9\u7684\u7bc4\u570d\u76e1\u53ef\u80fd\u5c0f\uff0c\u907f\u514d\u5728\u4e8b\u52d9\u4e2d\u57f7\u884c\u4e0d\u5fc5\u8981\u7684\u64cd\u4f5c\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u9396\u7684\u6301\u6709\u6642\u9593\uff0c\u964d\u4f4e\u51fa\u73fe\u5e8f\u5217\u5316\u5931\u6557\u7684\u6a5f\u6703\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e9%81%a9%e7%95%b6%e7%9a%84%e9%9a%94%e9%9b%a2%e7%b4%9a%e5%88%a5-kZqybuFfRT\">3. \u4f7f\u7528\u9069\u7576\u7684\u9694\u96e2\u7d1a\u5225<\/h3>\n<p>PostgreSQL\u652f\u6301\u591a\u7a2e\u4e8b\u52d9\u9694\u96e2\u7d1a\u5225\u3002\u6839\u64da\u61c9\u7528\u7684\u9700\u6c42\uff0c\u9078\u64c7\u5408\u9069\u7684\u9694\u96e2\u7d1a\u5225\u53ef\u4ee5\u6e1b\u5c11\u5e8f\u5217\u5316\u5931\u6557\u7684\u98a8\u96aa\u3002\u4f8b\u5982\uff0c\u4f7f\u7528READ COMMITTED\u800c\u4e0d\u662fSERIALIZABLE\u53ef\u4ee5\u964d\u4f4e\u51fa\u73fe\u6b64\u932f\u8aa4\u7684\u6982\u7387\u3002<\/p>\n<pre><code>SET TRANSACTION ISOLATION LEVEL READ COMMITTED;\n<\/code><\/pre>\n<h3 id=\"4-%e7%9b%a3%e6%8e%a7%e5%92%8c%e8%aa%bf%e6%95%b4-kZqybuFfRT\">4. \u76e3\u63a7\u548c\u8abf\u6574<\/h3>\n<p>\u5b9a\u671f\u76e3\u63a7\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4f75\u767c\u7684\u60c5\u6cc1\u4e0b\u3002\u6839\u64da\u76e3\u63a7\u7d50\u679c\u8abf\u6574\u6578\u64da\u5eab\u914d\u7f6e\u548c\u61c9\u7528\u908f\u8f2f\uff0c\u4ee5\u63d0\u9ad8\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-kZqybuFfRT\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL\u7684\u932f\u8aa4\u4ee3\u78bc40001 &#8211; serialization_failure\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4f75\u767c\u74b0\u5883\u4e2d\u3002\u901a\u904e\u5be6\u65bd\u91cd\u8a66\u6a5f\u5236\u3001\u512a\u5316\u4e8b\u52d9\u3001\u9078\u64c7\u9069\u7576\u7684\u9694\u96e2\u7d1a\u5225\u4ee5\u53ca\u5b9a\u671f\u76e3\u63a7\u548c\u8abf\u6574\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u6b64\u932f\u8aa4\u7684\u767c\u751f\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u670d\u52d9\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a>\u89e3\u6c7a\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6574\u9ad4\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc40001 &#8211; serialization_failure\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\uff0c\u78ba\u4fdd\u4e8b\u52d9\u9806\u5229\u57f7\u884c\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-178968","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178968","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=178968"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178968\/revisions"}],"predecessor-version":[{"id":178969,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178968\/revisions\/178969"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178968"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178968"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178968"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}