{"Entry":{"collection":"sqlstate","key":"57P05","name":"57P05","aliases":[],"metadata":{"aliases":[],"case_count":0,"class_code":"57","condition_name":"idle_session_timeout","condition_names":["idle_session_timeout"],"content_hash":"b0b49e86338f48973c1cc41fdeca26301fad888312e33be5bd005713a698b6f9","depth":"full","editorial_review":"reviewed","evidence_tier":"source_path_confirmed","imported_at":"2026-09-30T17:45:27.934198+08:00","introduced":null,"known_present_by":"14.0","macros":["ERRCODE_IDLE_SESSION_TIMEOUT"],"name_zh":"","present_in":["14","15","16","17","18","19"],"preview_in":["19"],"primary_macro":"ERRCODE_IDLE_SESSION_TIMEOUT","removed":null,"runtime_verification":"not_run","severity_classes":["E"],"snippet_count":0,"source_rev":"english-manuals:bce22c115e78cb6aec27ac17a9c48e1070dea6703f591fe0f767b59ec9ec9ebb","sqlstate":"57P05","status":"active","summary_zh":"空闲会话超过 idle_session_timeout 被终止。"}},"Definition":{"Collection":"sqlstate","Key":"57P05","SourceDatabase":"center","Version":"18","SourceTable":"sqlstate","SourceKey":"57P05","SourceRevision":"english-manuals:bce22c115e78cb6aec27ac17a9c48e1070dea6703f591fe0f767b59ec9ec9ebb","Facts":{"aliases":[],"class_name":"Operator Intervention","condition_name":"idle_session_timeout","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"56dacf78e618ff0fd8c533e05db597b80d7ebbad7f8e512a888217d0640aa328","slug":"18"},"lang":"en","sqlstate":"57P05"},"ManualEvidence":{"doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"56dacf78e618ff0fd8c533e05db597b80d7ebbad7f8e512a888217d0640aa328","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"sqlstate","Key":"57P05","SourceDatabase":"center","Version":"","Locale":"zh-Hans","Title":"57P05 — idle_session_timeout","Summary":"空闲会话超过 idle_session_timeout 被终止。","BodyHTML":"\u003ch1\u003e57P05\u003c/h1\u003e\n\u003ch2\u003e速览 {#at-a-glance}\u003c/h2\u003e\n\u003cp\u003e\u003ccode\u003e57P05\u003c/code\u003e 在 \u003ccode\u003eidle_session_timeout\u003c/code\u003e 到期、backend 确实处于命令之间的 idle 状态时终止 session。固定代码只在无事务分支启动这个 timer；idle-in-transaction 使用另一条件和 timer。\u003c/p\u003e\n\u003ch2\u003e含义 {#meaning}\u003c/h2\u003e\n\u003cp\u003e固定 primary 是 \u003ccode\u003eterminating connection due to idle-session timeout\u003c/code\u003e，severity 为 FATAL。\u003ccode\u003ePostgresMain\u003c/code\u003e 在 backend 报告 \u003ccode\u003eSTATE_IDLE\u003c/code\u003e 后、且 \u003ccode\u003eIsTransactionOrTransactionBlock()\u003c/code\u003e 为假时才启用 idle-session timer。读到命令后立即关闭该 timer。因此 \u003ccode\u003e57P05\u003c/code\u003e 是 session 生命周期终止，区别于 statement timeout \u003ccode\u003e57014\u003c/code\u003e、lock timeout \u003ccode\u003e55P03\u003c/code\u003e、idle-in-transaction timeout \u003ccode\u003e25P03\u003c/code\u003e 和 transaction timeout \u003ccode\u003e25P04\u003c/code\u003e。\u003c/p\u003e\n\u003ch2\u003e消息 {#messages}\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eprimary：\u003ccode\u003eterminating connection due to idle-session timeout\u003c/code\u003e。\u003c/li\u003e\n\u003cli\u003eseverity：FATAL；timer interrupt 会终止连接，不返回可恢复的语句级 ERROR。\u003c/li\u003e\n\u003cli\u003e边界：命令之间真正 idle 的 session 使用 \u003ccode\u003e57P05\u003c/code\u003e；开放事务内 idle 的 session 使用单独的 idle-in-transaction timer/条件。\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch2\u003e诊断 {#diagnosis}\u003c/h2\u003e\n\u003cp\u003e记录 primary、backend PID、\u003ccode\u003eidle_session_timeout\u003c/code\u003e 值及来源、最后一条命令、\u003ccode\u003epg_stat_activity\u003c/code\u003e 状态、事务状态和服务器日志。确认 timer 启动时 session 是 \u003ccode\u003eidle\u003c/code\u003e 还是 \u003ccode\u003eidle in transaction\u003c/code\u003e。单凭客户端耗时不能把它和 statement/lock timeout 区分开，还应结合连接最后的 ReadyForQuery 状态解释 SQLSTATE。\u003c/p\u003e\n\u003ch2\u003e处理 {#response}\u003c/h2\u003e\n\u003cp\u003e关闭或重建已过期连接，把长时间工作改成明确的工作单元，不要依赖闲置 session。只有策略允许且工作负载确有需要时才调整 \u003ccode\u003eidle_session_timeout\u003c/code\u003e。FATAL 会关闭连接，原 session 上没有可发送的有效 \u003ccode\u003eROLLBACK\u003c/code\u003e；重连后，重放非幂等命令前先核对持久化效果。若工作实际是在事务内 idle，应分别诊断 \u003ccode\u003e25P03\u003c/code\u003e/\u003ccode\u003e25P04\u003c/code\u003e 和事务归属。\u003c/p\u003e\n\u003ch2\u003e版本 {#versions}\u003c/h2\u003e\n\u003cp\u003e锁定目录从 14.0 记录此条件；该目录边界不等于精确实现引入版本。固定源码覆盖 PostgreSQL 18.6。\u003c/p\u003e\n\u003ch2\u003e相关 {#related}\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"/wiki/sqlstate/57P01/\" rel=\"nofollow\"\u003e\u003ccode\u003e57P01\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/wiki/sqlstate/25P03/\" rel=\"nofollow\"\u003e\u003ccode\u003e25P03\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/wiki/sqlstate/25P04/\" rel=\"nofollow\"\u003e\u003ccode\u003e25P04\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/wiki/sqlstate/57014/\" rel=\"nofollow\"\u003e\u003ccode\u003e57014\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/wiki/sqlstate/55P03/\" rel=\"nofollow\"\u003e\u003ccode\u003e55P03\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003ch2\u003e来源 {#sources}\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/tcop/postgres.c#L3504\" rel=\"nofollow\"\u003e\u003ccode\u003esrc/backend/tcop/postgres.c#L3504-3513\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/tcop/postgres.c#L4585\" rel=\"nofollow\"\u003e\u003ccode\u003esrc/backend/tcop/postgres.c#L4585-4650\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/tcop/postgres.c#L4704\" rel=\"nofollow\"\u003e\u003ccode\u003esrc/backend/tcop/postgres.c#L4704-4721\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e结构化\u003ca href=\"#sources\" rel=\"nofollow\"\u003e证据记录\u003c/a\u003e保存消息和 idle 状态边界。\u003c/p\u003e\n","SourceRevision":"english-manuals:bce22c115e78cb6aec27ac17a9c48e1070dea6703f591fe0f767b59ec9ec9ebb","ContentHash":"0a91397d6585943f1235866870c1c008c2ba274715822170075da8c49cc1b7da","Payload":{"body_md":"# 57P05\n\n## 速览 {#at-a-glance}\n`57P05` 在 `idle_session_timeout` 到期、backend 确实处于命令之间的 idle 状态时终止 session。固定代码只在无事务分支启动这个 timer；idle-in-transaction 使用另一条件和 timer。\n\n\n## 含义 {#meaning}\n固定 primary 是 `terminating connection due to idle-session timeout`，severity 为 FATAL。`PostgresMain` 在 backend 报告 `STATE_IDLE` 后、且 `IsTransactionOrTransactionBlock()` 为假时才启用 idle-session timer。读到命令后立即关闭该 timer。因此 `57P05` 是 session 生命周期终止，区别于 statement timeout `57014`、lock timeout `55P03`、idle-in-transaction timeout `25P03` 和 transaction timeout `25P04`。\n\n## 消息 {#messages}\n\n- primary：`terminating connection due to idle-session timeout`。\n- severity：FATAL；timer interrupt 会终止连接，不返回可恢复的语句级 ERROR。\n- 边界：命令之间真正 idle 的 session 使用 `57P05`；开放事务内 idle 的 session 使用单独的 idle-in-transaction timer/条件。\n\n## 诊断 {#diagnosis}\n记录 primary、backend PID、`idle_session_timeout` 值及来源、最后一条命令、`pg_stat_activity` 状态、事务状态和服务器日志。确认 timer 启动时 session 是 `idle` 还是 `idle in transaction`。单凭客户端耗时不能把它和 statement/lock timeout 区分开，还应结合连接最后的 ReadyForQuery 状态解释 SQLSTATE。\n\n## 处理 {#response}\n关闭或重建已过期连接，把长时间工作改成明确的工作单元，不要依赖闲置 session。只有策略允许且工作负载确有需要时才调整 `idle_session_timeout`。FATAL 会关闭连接，原 session 上没有可发送的有效 `ROLLBACK`；重连后，重放非幂等命令前先核对持久化效果。若工作实际是在事务内 idle，应分别诊断 `25P03`/`25P04` 和事务归属。\n\n## 版本 {#versions}\n锁定目录从 14.0 记录此条件；该目录边界不等于精确实现引入版本。固定源码覆盖 PostgreSQL 18.6。\n\n## 相关 {#related}\n[`57P01`](/wiki/sqlstate/57P01/)、[`25P03`](/wiki/sqlstate/25P03/)、[`25P04`](/wiki/sqlstate/25P04/)、[`57014`](/wiki/sqlstate/57014/)、[`55P03`](/wiki/sqlstate/55P03/)\n\n## 来源 {#sources}\n[`src/backend/tcop/postgres.c#L3504-3513`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/tcop/postgres.c#L3504)\n\n[`src/backend/tcop/postgres.c#L4585-4650`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/tcop/postgres.c#L4585)\n\n[`src/backend/tcop/postgres.c#L4704-4721`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/tcop/postgres.c#L4704)\n\n结构化[证据记录](#sources)保存消息和 idle 状态边界。\n","description":"PostgreSQL 57P05 的来源与诊断参考。","is_stale":false,"name":"","sections":[{"anchor":"","heading":"","html":"\u0026lt;h1\u0026gt;57P05\u0026lt;/h1\u0026gt;"},{"anchor":"at-a-glance","heading":"速览","html":"\u003cp\u003e\u003ccode\u003e57P05\u003c/code\u003e 在 \u003ccode\u003eidle_session_timeout\u003c/code\u003e 到期、backend 确实处于命令之间的 idle 状态时终止 session。固定代码只在无事务分支启动这个 timer；idle-in-transaction 使用另一条件和 timer。\u003c/p\u003e"},{"anchor":"meaning","heading":"含义","html":"\u003cp\u003e固定 primary 是 \u003ccode\u003eterminating connection due to idle-session timeout\u003c/code\u003e，severity 为 FATAL。\u003ccode\u003ePostgresMain\u003c/code\u003e 在 backend 报告 \u003ccode\u003eSTATE_IDLE\u003c/code\u003e 后、且 \u003ccode\u003eIsTransactionOrTransactionBlock()\u003c/code\u003e 为假时才启用 idle-session timer。读到命令后立即关闭该 timer。因此 \u003ccode\u003e57P05\u003c/code\u003e 是 session 生命周期终止，区别于 statement timeout \u003ccode\u003e57014\u003c/code\u003e、lock timeout \u003ccode\u003e55P03\u003c/code\u003e、idle-in-transaction timeout \u003ccode\u003e25P03\u003c/code\u003e 和 transaction timeout \u003ccode\u003e25P04\u003c/code\u003e。\u003c/p\u003e"},{"anchor":"messages","heading":"消息","html":"\u003cul\u003e\n\u003cli\u003eprimary：\u003ccode\u003eterminating connection due to idle-session timeout\u003c/code\u003e。\u003c/li\u003e\n\u003cli\u003eseverity：FATAL；timer interrupt 会终止连接，不返回可恢复的语句级 ERROR。\u003c/li\u003e\n\u003cli\u003e边界：命令之间真正 idle 的 session 使用 \u003ccode\u003e57P05\u003c/code\u003e；开放事务内 idle 的 session 使用单独的 idle-in-transaction timer/条件。\u003c/li\u003e\n\u003c/ul\u003e"},{"anchor":"diagnosis","heading":"诊断","html":"\u003cp\u003e记录 primary、backend PID、\u003ccode\u003eidle_session_timeout\u003c/code\u003e 值及来源、最后一条命令、\u003ccode\u003epg_stat_activity\u003c/code\u003e 状态、事务状态和服务器日志。确认 timer 启动时 session 是 \u003ccode\u003eidle\u003c/code\u003e 还是 \u003ccode\u003eidle in transaction\u003c/code\u003e。单凭客户端耗时不能把它和 statement/lock timeout 区分开，还应结合连接最后的 ReadyForQuery 状态解释 SQLSTATE。\u003c/p\u003e"},{"anchor":"response","heading":"处理","html":"\u003cp\u003e关闭或重建已过期连接，把长时间工作改成明确的工作单元，不要依赖闲置 session。只有策略允许且工作负载确有需要时才调整 \u003ccode\u003eidle_session_timeout\u003c/code\u003e。FATAL 会关闭连接，原 session 上没有可发送的有效 \u003ccode\u003eROLLBACK\u003c/code\u003e；重连后，重放非幂等命令前先核对持久化效果。若工作实际是在事务内 idle，应分别诊断 \u003ccode\u003e25P03\u003c/code\u003e/\u003ccode\u003e25P04\u003c/code\u003e 和事务归属。\u003c/p\u003e"},{"anchor":"versions","heading":"版本","html":"\u003cp\u003e锁定目录从 14.0 记录此条件；该目录边界不等于精确实现引入版本。固定源码覆盖 PostgreSQL 18.6。\u003c/p\u003e"},{"anchor":"related","heading":"相关","html":"\u003cp\u003e\u003ca href=\"/wiki/sqlstate/57P01/\"\u003e\u003ccode\u003e57P01\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/wiki/sqlstate/25P03/\"\u003e\u003ccode\u003e25P03\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/wiki/sqlstate/25P04/\"\u003e\u003ccode\u003e25P04\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/wiki/sqlstate/57014/\"\u003e\u003ccode\u003e57014\u003c/code\u003e\u003c/a\u003e、\u003ca href=\"/wiki/sqlstate/55P03/\"\u003e\u003ccode\u003e55P03\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e"},{"anchor":"sources","heading":"来源","html":"\u003cp\u003e\u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/tcop/postgres.c#L3504\"\u003e\u003ccode\u003esrc/backend/tcop/postgres.c#L3504-3513\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/tcop/postgres.c#L4585\"\u003e\u003ccode\u003esrc/backend/tcop/postgres.c#L4585-4650\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/tcop/postgres.c#L4704\"\u003e\u003ccode\u003esrc/backend/tcop/postgres.c#L4704-4721\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e结构化\u003ca href=\"#sources\"\u003e证据记录\u003c/a\u003e保存消息和 idle 状态边界。\u003c/p\u003e"}],"summary":"空闲会话超过 idle_session_timeout 被终止。","title":"57P05 — idle_session_timeout","translation_source_rev":"f55e9cb79e0ab3269a5365a6f52be5f86d4c609314cfdab3ae8f1ad955b17a67"}},"RequestedLocale":"zh-Hans","Fallback":false,"Versions":["14","15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":null,"SQLState":{"aliases":[],"catalogue_notes":{"earliest_observed":"14.0","formal_scope":"9.0.0..18.6","latest_observed":"18.6","matrix_scope":["9.0.23","9.1.24","9.2.24","9.3.25","9.4.26","9.5.25","9.6.24","10.23","11.22","12.22","13.23","14.24","15.19","16.15","17.11","18.6"],"pre9_scope":{"formal_tag_count":191,"maximum_release":"8.4.22","minimum_release":"7.0.0","source_definition_count":153,"source_doc_count":153,"source_file_count":306,"source_scope":"7.4..8.4 definition files; 7.0..7.3 candidate-path source gap probes","source_tag_count":153},"pre9_status":"not_observed","preview_scope":["19beta3"]},"class":"57","class_name":"Operator Intervention","condition_name":"idle_session_timeout","condition_names":["idle_session_timeout"],"definition_changes":[],"english_manuals":{"14":{"aliases":[],"class_name":"Operator Intervention","condition_name":"idle_session_timeout","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"1c12e83304e0f4ff64c9d98ca5e3007df6756932ed19867a4fa0e0650f6c5751","slug":"14"},"lang":"en","sqlstate":"57P05"},"15":{"aliases":[],"class_name":"Operator Intervention","condition_name":"idle_session_timeout","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"2161f58f6e87f6535b3b1f3d4661427bb6765f4f6b074fcc16fac97594b50599","slug":"15"},"lang":"en","sqlstate":"57P05"},"16":{"aliases":[],"class_name":"Operator Intervention","condition_name":"idle_session_timeout","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"928e705933d7c3d018ae3fba9d800b34e6325746d157339dce878473c519d100","slug":"16"},"lang":"en","sqlstate":"57P05"},"17":{"aliases":[],"class_name":"Operator Intervention","condition_name":"idle_session_timeout","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"868135520af87351e3ea1ba42656111cbd2d157d98e1fef05ea158ac5729d8b1","slug":"17"},"lang":"en","sqlstate":"57P05"},"18":{"aliases":[],"class_name":"Operator Intervention","condition_name":"idle_session_timeout","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"56dacf78e618ff0fd8c533e05db597b80d7ebbad7f8e512a888217d0640aa328","slug":"18"},"lang":"en","sqlstate":"57P05"},"19":{"aliases":[],"class_name":"Operator 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