{"Entry":{"collection":"sqlstate","key":"XX000","name":"XX000","aliases":[],"metadata":{"aliases":[],"case_count":1,"class_code":"XX","condition_name":"internal_error","condition_names":["internal_error"],"content_hash":"8a5b000644f301d21a2898cef5d43438283c057d3de653e007c2b74a3498e4db","depth":"reference","editorial_review":"reviewed","evidence_tier":"source_path_confirmed","imported_at":"2026-09-30T17:45:28.162075+08:00","introduced":null,"known_present_by":"7.4","macros":["ERRCODE_INTERNAL_ERROR"],"name_zh":"内部错误","present_in":["9.0","9.1","9.2","9.3","9.4","9.5","9.6","10","11","12","13","14","15","16","17","18","19"],"preview_in":["19"],"primary_macro":"ERRCODE_INTERNAL_ERROR","removed":null,"runtime_verification":"not_applicable","severity_classes":["E"],"snippet_count":0,"source_rev":"english-manuals:e1cf957b27ee00962ed761abc4cfb75b52de58b2b6ed8b2542eafb44748db95c","sqlstate":"XX000","status":"active","summary_zh":"内部错误，也是未显式指定代码的 ERROR 默认码。"}},"Definition":{"Collection":"sqlstate","Key":"XX000","SourceDatabase":"center","Version":"18","SourceTable":"sqlstate","SourceKey":"XX000","SourceRevision":"english-manuals:e1cf957b27ee00962ed761abc4cfb75b52de58b2b6ed8b2542eafb44748db95c","Facts":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"56dacf78e618ff0fd8c533e05db597b80d7ebbad7f8e512a888217d0640aa328","slug":"18"},"lang":"en","sqlstate":"XX000"},"ManualEvidence":{"doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"56dacf78e618ff0fd8c533e05db597b80d7ebbad7f8e512a888217d0640aa328","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"sqlstate","Key":"XX000","SourceDatabase":"center","Version":"","Locale":"zh-Hans","Title":"XX000 — internal_error（内部错误）","Summary":"内部错误，也是未显式指定代码的 ERROR 默认码。","BodyHTML":"\u003ch2\u003e速览 {#at-a-glance}\u003c/h2\u003e\n\u003cp\u003e\u003ccode\u003eXX000\u003c/code\u003e 是类别 XX \u003ccode\u003eInternal Error\u003c/code\u003e 中的 \u003ccode\u003einternal_error\u003c/code\u003e 条件。PostgreSQL 源码目录把这个类别描述为“本不应发生”的条件和软件缺陷。它是通用的诊断边界，不能据此断言数据库已经损坏。\u003c/p\u003e\n\u003cp\u003e这个代码也有机械的默认来源。在错误栈初始化时，没有后续显式代码的 \u003ccode\u003eERROR\u003c/code\u003e 或更高级别会先使用 \u003ccode\u003eERRCODE_INTERNAL_ERROR\u003c/code\u003e；\u003ccode\u003eWARNING\u003c/code\u003e 级别从 \u003ccode\u003eERRCODE_WARNING\u003c/code\u003e（\u003ccode\u003e01000\u003c/code\u003e）开始；低于 \u003ccode\u003eWARNING\u003c/code\u003e 的级别若没有自己的代码则从 \u003ccode\u003e00000\u003c/code\u003e 开始。显式 \u003ccode\u003eerrcode()\u003c/code\u003e 可以选择其他 SQLSTATE。因此，\u003ccode\u003eXX000\u003c/code\u003e 可能来自没有显式 SQLSTATE 的默认 \u003ccode\u003eelog(ERROR, ...)\u003c/code\u003e 路径，也可能来自主动报告内部错误的路径。\u003c/p\u003e\n\u003cp\u003e严重级别和连接后果取决于具体路径。\u003ccode\u003eERROR\u003c/code\u003e、\u003ccode\u003eFATAL\u003c/code\u003e 和 \u003ccode\u003ePANIC\u003c/code\u003e 是不同的协议严重级别；扩展测试代码甚至可以在 \u003ccode\u003eNOTICE\u003c/code\u003e 中显式携带 \u003ccode\u003eXX000\u003c/code\u003e。应把严重级别、事务状态、连接状态、源码位置和完整诊断放在一起读取。\u003c/p\u003e\n\u003cp\u003e代表性案例 \u003ccode\u003einternal_error_safety_boundary\u003c/code\u003e 只做源码核验，未实测自然触发路径。由于强行制造内部损坏或故障会越过安全的临时数据库边界，PostgreSQL 18.6 和 10.21 上均记录为 \u003ccode\u003enot_applicable\u003c/code\u003e，也没有用手写 \u003ccode\u003eRAISE\u003c/code\u003e 冒充服务器内部失败。\u003c/p\u003e\n\u003ch2\u003e含义与触发路径 {#meaning}\u003c/h2\u003e\n\u003cp\u003e18.6 的定义是在类别 XX 下的 \u003ccode\u003eXX000 E ERRCODE_INTERNAL_ERROR internal_error\u003c/code\u003e。这个类别注释有意保持宽泛。对于数据损坏（\u003ccode\u003eXX001\u003c/code\u003e）和索引损坏（\u003ccode\u003eXX002\u003c/code\u003e）还有更具体的代码；选用 \u003ccode\u003eXX000\u003c/code\u003e 不会自动把通用内部报文升级成这两种诊断。\u003c/p\u003e\n\u003cp\u003e需要区分两种源码模式：\u003c/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003e默认内部代码。\u003c/strong\u003e 后端路径调用没有显式 SQLSTATE 的 \u003ccode\u003eelog(ERROR, ...)\u003c/code\u003e，或以同样方式到达 \u003ccode\u003eereport(ERROR, ...)\u003c/code\u003e。\u003ccode\u003eelog.c\u003c/code\u003e 会把这个错误初始化为 \u003ccode\u003eXX000\u003c/code\u003e，但报文和源码函数仍能指出所属子系统。\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003e显式内部代码。\u003c/strong\u003e 某条路径调用 \u003ccode\u003eerrcode(ERRCODE_INTERNAL_ERROR)\u003c/code\u003e，因为某个不变量或操作系统/服务结果被视为不可能或不可用。18.6 中的例子包括 B-tree 重检时无法重新找到索引元组、动态共享内存控制段无效、尝试重新定义非占位配置参数，以及 UUID 生成无法取得强随机字节。\u003c/li\u003e\n\u003c/ol\u003e\n\u003cp\u003e显式代码不会强制唯一的严重级别。共享内存路径报告 \u003ccode\u003eFATAL\u003c/code\u003e，而 B-tree、GUC 和 UUID 例子报告 \u003ccode\u003eERROR\u003c/code\u003e。一个访问控制测试钩子还会在 \u003ccode\u003eNOTICE\u003c/code\u003e 中显式报告 \u003ccode\u003eERRCODE_INTERNAL_ERROR\u003c/code\u003e，说明 SQLSTATE 与严重级别是分开的字段。这个钩子只是源码例子，不是普通生产提示表示内部故障的证据。\u003c/p\u003e\n\u003ch2\u003e报文与诊断 {#messages}\u003c/h2\u003e\n\u003cp\u003e\u003ccode\u003eXX000\u003c/code\u003e 没有统一的主报文。源码中可见的代表性模板包括：\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ccode\u003efailed to re-find tuple within index \u0026#34;%s\u0026#34;\u003c/code\u003e，并提示索引表达式可能不是不可变的（\u003ccode\u003enbtinsert.c\u003c/code\u003e）。\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003edynamic shared memory control segment is not valid\u003c/code\u003e，出现在 \u003ccode\u003eFATAL\u003c/code\u003e 初始化路径（\u003ccode\u003edsm.c\u003c/code\u003e）。\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eattempt to redefine parameter \u0026#34;%s\u0026#34;\u003c/code\u003e（\u003ccode\u003eguc.c\u003c/code\u003e）和 \u003ccode\u003ecould not generate random values\u003c/code\u003e（\u003ccode\u003euuid.c\u003c/code\u003e）。\u003c/li\u003e\n\u003cli\u003e默认 \u003ccode\u003eelog(ERROR, ...)\u003c/code\u003e 路径中的 \u003ccode\u003einvalid page pd_lower %u pd_upper %u pd_special %u\u003c/code\u003e（\u003ccode\u003ebufmask.c\u003c/code\u003e）；没有其他显式代码替换时，默认映射会提供 \u003ccode\u003eXX000\u003c/code\u003e。\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003e这些都是具体路径的诊断模板。应记录 SQLSTATE、两种严重级别字段、主报文、详细信息、提示、上下文、源码文件、函数、行号、后端 PID、数据库和服务器版本。本地化文本和模板措辞可能变化；源码路径和结构化字段比报文子串更稳定。\u003c/p\u003e\n\u003ch2\u003e诊断 {#diagnosis}\u003c/h2\u003e\n\u003cp\u003e在重试或重启前保留完整的客户端错误和对应服务器日志。先按协议严重级别分类：\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ccode\u003eERROR\u003c/code\u003e 通常会中止当前显式事务，但回滚后后端连接仍可使用。\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eFATAL\u003c/code\u003e 会结束后端会话，客户端需要建立新连接才能继续。\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ePANIC\u003c/code\u003e 是影响服务器的紧急路径，进程和连接后果必须根据服务器日志和进程监管状态确认。\u003c/li\u003e\n\u003cli\u003e显式携带 \u003ccode\u003eXX000\u003c/code\u003e 的 \u003ccode\u003eWARNING\u003c/code\u003e 或 \u003ccode\u003eNOTICE\u003c/code\u003e 具有不同控制流，单凭它既不能证明内部故障，也不能断言事务中止。\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003e随后按源码函数和子系统归类。检查是否有先发生的 I/O、内存、扩展、索引、配置或并发故障；比对确切服务器构建和固定源码版本；寻找是否重复出现。只有当诊断指向相关对象时，才使用只读的目录、索引或页面检查。不能仅凭类别名推断损坏，也不要用手写 \u003ccode\u003eRAISE EXCEPTION\u003c/code\u003e 来制造复现：那默认测试的是 \u003ccode\u003eP0001\u003c/code\u003e，不是服务器内部路径。\u003c/p\u003e\n\u003ch2\u003e处理 {#response}\u003c/h2\u003e\n\u003cp\u003e按照严重级别和子系统处理。\u003ccode\u003eERROR\u003c/code\u003e 要先回滚事务再发无关命令；\u003ccode\u003eFATAL\u003c/code\u003e 后重新建立连接；\u003ccode\u003ePANIC\u003c/code\u003e 后遵循服务器重启和事故流程。内部错误若源码指向不变量、存储、索引或共享内存边界，不应盲目重试。\u003c/p\u003e\n\u003cp\u003e收集服务器版本、确切 SQL、后端和服务器日志、源码位置、关系对象或其他对象身份，以及近期配置和扩展变化。如果证据指向损坏，应根据事故流程在适当时停止写入，保留副本或快照，并使用 PostgreSQL 文档化的恢复与支持流程。如果证据指向没有损坏迹象的软件或扩展缺陷，则隔离可复现条件并比较受支持的版本。正确处理取决于这些证据，而不是 \u003ccode\u003eXX000\u003c/code\u003e 本身。\u003c/p\u003e\n\u003ch2\u003e版本 {#versions}\u003c/h2\u003e\n\u003cp\u003e目录记录 \u003ccode\u003eXX000\u003c/code\u003e 存在于锁定的 7.4–8.4.22 pre-9.0 正式源码、9.0.23 至 18.6 的全部正式快照及 19 Beta 3 预览快照。同 tag 的 \u003ccode\u003eREL8_1_4\u003c/code\u003e \u003ccode\u003eerrcodes.sgml\u003c/code\u003e 表已经列出 \u003ccode\u003eXX000\u003c/code\u003e 和条件名 \u003ccode\u003einternal_error\u003c/code\u003e，因此至少可以确认 8.1.4 已有该条件名。9.0 头文件视图中的类标题为 \u003ccode\u003eInternal Error (PostgreSQL-specific error class)\u003c/code\u003e，到 9.1 的文本定义变为 \u003ccode\u003eInternal Error\u003c/code\u003e。7.0–7.3 仍有候选源码缺口；这些是目录观察边界，不是确切实现引入日期的断言。\u003c/p\u003e\n\u003cp\u003e18.6 固定源码 commit 为 \u003ccode\u003e724edf9bde9d356724ad384a2e196edc3c9f80f7\u003c/code\u003e。默认严重级别到代码的映射以及上面的源码路径均有 18.6 证据。代表性运行案例没有接受确定且安全的 SQL 触发方式，因此两个目标的运行时状态均保持 \u003ccode\u003enot_applicable\u003c/code\u003e。\u003c/p\u003e\n\u003ch2\u003e相关 {#related}\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"/wiki/sqlstate/XX001/\" rel=\"nofollow\"\u003e\u003ccode\u003eXX001\u003c/code\u003e — \u003ccode\u003edata_corrupted\u003c/code\u003e\u003c/a\u003e 和 \u003ca href=\"/wiki/sqlstate/XX002/\" rel=\"nofollow\"\u003e\u003ccode\u003eXX002\u003c/code\u003e — \u003ccode\u003eindex_corrupted\u003c/code\u003e\u003c/a\u003e 是更具体的损坏条件。\u003ca href=\"/wiki/sqlstate/P0001/\" rel=\"nofollow\"\u003e\u003ccode\u003eP0001\u003c/code\u003e — \u003ccode\u003eraise_exception\u003c/code\u003e\u003c/a\u003e 是没有代码的 PL/pgSQL \u003ccode\u003eRAISE EXCEPTION\u003c/code\u003e 的通常默认值。\u003ca href=\"/wiki/sqlstate/57P01/\" rel=\"nofollow\"\u003e\u003ccode\u003e57P01\u003c/code\u003e — \u003ccode\u003eadmin_shutdown\u003c/code\u003e\u003c/a\u003e 是不同类别的服务器连接事件。\u003ca href=\"/wiki/sqlstate/25P02/\" rel=\"nofollow\"\u003e\u003ccode\u003e25P02\u003c/code\u003e — \u003ccode\u003ein_failed_sql_transaction\u003c/code\u003e\u003c/a\u003e 是前一个错误导致的后续事务状态，不是 \u003ccode\u003eXX000\u003c/code\u003e 的同义词。\u003c/p\u003e\n\u003ch2\u003e来源 {#sources}\u003c/h2\u003e\n\u003cp\u003e结构化证据记录在\u003ca href=\"#sources\" rel=\"nofollow\"\u003e公开证据 JSON\u003c/a\u003e中。源码记录固定到 PostgreSQL commit \u003ccode\u003e724edf9bde9d356724ad384a2e196edc3c9f80f7\u003c/code\u003e；运行时记录保留精确的源码边界案例 ID 和两个目标摘要。\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ccode\u003esrc.errcodes.18.6\u003c/code\u003e — \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/errcodes.txt#L496-L502\" rel=\"nofollow\"\u003e\u003ccode\u003eerrcodes.txt\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003esrc.elog.18.6\u003c/code\u003e — \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/error/elog.c#L442-L454\" rel=\"nofollow\"\u003e\u003ccode\u003eelog.c\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003esrc.nbtinsert.18.6\u003c/code\u003e、\u003ccode\u003esrc.dsm.18.6\u003c/code\u003e、\u003ccode\u003esrc.guc.18.6\u003c/code\u003e、\u003ccode\u003esrc.uuid.18.6\u003c/code\u003e 与 \u003ccode\u003esrc.bufmask.18.6\u003c/code\u003e — 源码确认的内部路径\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003esrc.oat-hooks.18.6\u003c/code\u003e — 在 \u003ccode\u003eNOTICE\u003c/code\u003e 中显式提供内部代码\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003edoc.protocol.18\u003c/code\u003e — \u003ca href=\"/docs/18/protocol-error-fields.html\" rel=\"nofollow\"\u003eError and Notice Message Fields\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n","SourceRevision":"english-manuals:e1cf957b27ee00962ed761abc4cfb75b52de58b2b6ed8b2542eafb44748db95c","ContentHash":"9dc855e8c75496ecee9ed61de92192e7093e094ac767ee3556c5d9e57fffc03d","Payload":{"body_md":"\n## 速览 {#at-a-glance}\n\n`XX000` 是类别 XX `Internal Error` 中的 `internal_error` 条件。PostgreSQL 源码目录把这个类别描述为“本不应发生”的条件和软件缺陷。它是通用的诊断边界，不能据此断言数据库已经损坏。\n\n这个代码也有机械的默认来源。在错误栈初始化时，没有后续显式代码的 `ERROR` 或更高级别会先使用 `ERRCODE_INTERNAL_ERROR`；`WARNING` 级别从 `ERRCODE_WARNING`（`01000`）开始；低于 `WARNING` 的级别若没有自己的代码则从 `00000` 开始。显式 `errcode()` 可以选择其他 SQLSTATE。因此，`XX000` 可能来自没有显式 SQLSTATE 的默认 `elog(ERROR, ...)` 路径，也可能来自主动报告内部错误的路径。\n\n严重级别和连接后果取决于具体路径。`ERROR`、`FATAL` 和 `PANIC` 是不同的协议严重级别；扩展测试代码甚至可以在 `NOTICE` 中显式携带 `XX000`。应把严重级别、事务状态、连接状态、源码位置和完整诊断放在一起读取。\n\n代表性案例 `internal_error_safety_boundary` 只做源码核验，未实测自然触发路径。由于强行制造内部损坏或故障会越过安全的临时数据库边界，PostgreSQL 18.6 和 10.21 上均记录为 `not_applicable`，也没有用手写 `RAISE` 冒充服务器内部失败。\n\n\n## 含义与触发路径 {#meaning}\n\n18.6 的定义是在类别 XX 下的 `XX000 E ERRCODE_INTERNAL_ERROR internal_error`。这个类别注释有意保持宽泛。对于数据损坏（`XX001`）和索引损坏（`XX002`）还有更具体的代码；选用 `XX000` 不会自动把通用内部报文升级成这两种诊断。\n\n需要区分两种源码模式：\n\n1. **默认内部代码。** 后端路径调用没有显式 SQLSTATE 的 `elog(ERROR, ...)`，或以同样方式到达 `ereport(ERROR, ...)`。`elog.c` 会把这个错误初始化为 `XX000`，但报文和源码函数仍能指出所属子系统。\n2. **显式内部代码。** 某条路径调用 `errcode(ERRCODE_INTERNAL_ERROR)`，因为某个不变量或操作系统/服务结果被视为不可能或不可用。18.6 中的例子包括 B-tree 重检时无法重新找到索引元组、动态共享内存控制段无效、尝试重新定义非占位配置参数，以及 UUID 生成无法取得强随机字节。\n\n显式代码不会强制唯一的严重级别。共享内存路径报告 `FATAL`，而 B-tree、GUC 和 UUID 例子报告 `ERROR`。一个访问控制测试钩子还会在 `NOTICE` 中显式报告 `ERRCODE_INTERNAL_ERROR`，说明 SQLSTATE 与严重级别是分开的字段。这个钩子只是源码例子，不是普通生产提示表示内部故障的证据。\n\n## 报文与诊断 {#messages}\n\n`XX000` 没有统一的主报文。源码中可见的代表性模板包括：\n\n- `failed to re-find tuple within index \"%s\"`，并提示索引表达式可能不是不可变的（`nbtinsert.c`）。\n- `dynamic shared memory control segment is not valid`，出现在 `FATAL` 初始化路径（`dsm.c`）。\n- `attempt to redefine parameter \"%s\"`（`guc.c`）和 `could not generate random values`（`uuid.c`）。\n- 默认 `elog(ERROR, ...)` 路径中的 `invalid page pd_lower %u pd_upper %u pd_special %u`（`bufmask.c`）；没有其他显式代码替换时，默认映射会提供 `XX000`。\n\n这些都是具体路径的诊断模板。应记录 SQLSTATE、两种严重级别字段、主报文、详细信息、提示、上下文、源码文件、函数、行号、后端 PID、数据库和服务器版本。本地化文本和模板措辞可能变化；源码路径和结构化字段比报文子串更稳定。\n\n## 诊断 {#diagnosis}\n\n在重试或重启前保留完整的客户端错误和对应服务器日志。先按协议严重级别分类：\n\n- `ERROR` 通常会中止当前显式事务，但回滚后后端连接仍可使用。\n- `FATAL` 会结束后端会话，客户端需要建立新连接才能继续。\n- `PANIC` 是影响服务器的紧急路径，进程和连接后果必须根据服务器日志和进程监管状态确认。\n- 显式携带 `XX000` 的 `WARNING` 或 `NOTICE` 具有不同控制流，单凭它既不能证明内部故障，也不能断言事务中止。\n\n随后按源码函数和子系统归类。检查是否有先发生的 I/O、内存、扩展、索引、配置或并发故障；比对确切服务器构建和固定源码版本；寻找是否重复出现。只有当诊断指向相关对象时，才使用只读的目录、索引或页面检查。不能仅凭类别名推断损坏，也不要用手写 `RAISE EXCEPTION` 来制造复现：那默认测试的是 `P0001`，不是服务器内部路径。\n\n## 处理 {#response}\n\n按照严重级别和子系统处理。`ERROR` 要先回滚事务再发无关命令；`FATAL` 后重新建立连接；`PANIC` 后遵循服务器重启和事故流程。内部错误若源码指向不变量、存储、索引或共享内存边界，不应盲目重试。\n\n收集服务器版本、确切 SQL、后端和服务器日志、源码位置、关系对象或其他对象身份，以及近期配置和扩展变化。如果证据指向损坏，应根据事故流程在适当时停止写入，保留副本或快照，并使用 PostgreSQL 文档化的恢复与支持流程。如果证据指向没有损坏迹象的软件或扩展缺陷，则隔离可复现条件并比较受支持的版本。正确处理取决于这些证据，而不是 `XX000` 本身。\n\n## 版本 {#versions}\n\n目录记录 `XX000` 存在于锁定的 7.4–8.4.22 pre-9.0 正式源码、9.0.23 至 18.6 的全部正式快照及 19 Beta 3 预览快照。同 tag 的 `REL8_1_4` `errcodes.sgml` 表已经列出 `XX000` 和条件名 `internal_error`，因此至少可以确认 8.1.4 已有该条件名。9.0 头文件视图中的类标题为 `Internal Error (PostgreSQL-specific error class)`，到 9.1 的文本定义变为 `Internal Error`。7.0–7.3 仍有候选源码缺口；这些是目录观察边界，不是确切实现引入日期的断言。\n\n18.6 固定源码 commit 为 `724edf9bde9d356724ad384a2e196edc3c9f80f7`。默认严重级别到代码的映射以及上面的源码路径均有 18.6 证据。代表性运行案例没有接受确定且安全的 SQL 触发方式，因此两个目标的运行时状态均保持 `not_applicable`。\n\n## 相关 {#related}\n\n[`XX001` — `data_corrupted`](/wiki/sqlstate/XX001/) 和 [`XX002` — `index_corrupted`](/wiki/sqlstate/XX002/) 是更具体的损坏条件。[`P0001` — `raise_exception`](/wiki/sqlstate/P0001/) 是没有代码的 PL/pgSQL `RAISE EXCEPTION` 的通常默认值。[`57P01` — `admin_shutdown`](/wiki/sqlstate/57P01/) 是不同类别的服务器连接事件。[`25P02` — `in_failed_sql_transaction`](/wiki/sqlstate/25P02/) 是前一个错误导致的后续事务状态，不是 `XX000` 的同义词。\n\n## 来源 {#sources}\n\n结构化证据记录在[公开证据 JSON](#sources)中。源码记录固定到 PostgreSQL commit `724edf9bde9d356724ad384a2e196edc3c9f80f7`；运行时记录保留精确的源码边界案例 ID 和两个目标摘要。\n\n- `src.errcodes.18.6` — [`errcodes.txt`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/errcodes.txt#L496-L502)\n- `src.elog.18.6` — [`elog.c`](https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/error/elog.c#L442-L454)\n- `src.nbtinsert.18.6`、`src.dsm.18.6`、`src.guc.18.6`、`src.uuid.18.6` 与 `src.bufmask.18.6` — 源码确认的内部路径\n- `src.oat-hooks.18.6` — 在 `NOTICE` 中显式提供内部代码\n- `doc.protocol.18` — [Error and Notice Message Fields](/docs/18/protocol-error-fields.html)\n","description":"PostgreSQL 使用 SQLSTATE XX000 表示内部错误路径，也把没有显式代码的 ERROR 默认映射到这里。应保留完整诊断并调查具体子系统；XX000 本身不能证明数据损坏。","is_stale":false,"name":"内部错误","sections":[{"anchor":"at-a-glance","heading":"速览","html":"\u003cp\u003e\u003ccode\u003eXX000\u003c/code\u003e 是类别 XX \u003ccode\u003eInternal Error\u003c/code\u003e 中的 \u003ccode\u003einternal_error\u003c/code\u003e 条件。PostgreSQL 源码目录把这个类别描述为“本不应发生”的条件和软件缺陷。它是通用的诊断边界，不能据此断言数据库已经损坏。\u003c/p\u003e\n\u003cp\u003e这个代码也有机械的默认来源。在错误栈初始化时，没有后续显式代码的 \u003ccode\u003eERROR\u003c/code\u003e 或更高级别会先使用 \u003ccode\u003eERRCODE_INTERNAL_ERROR\u003c/code\u003e；\u003ccode\u003eWARNING\u003c/code\u003e 级别从 \u003ccode\u003eERRCODE_WARNING\u003c/code\u003e（\u003ccode\u003e01000\u003c/code\u003e）开始；低于 \u003ccode\u003eWARNING\u003c/code\u003e 的级别若没有自己的代码则从 \u003ccode\u003e00000\u003c/code\u003e 开始。显式 \u003ccode\u003eerrcode()\u003c/code\u003e 可以选择其他 SQLSTATE。因此，\u003ccode\u003eXX000\u003c/code\u003e 可能来自没有显式 SQLSTATE 的默认 \u003ccode\u003eelog(ERROR, ...)\u003c/code\u003e 路径，也可能来自主动报告内部错误的路径。\u003c/p\u003e\n\u003cp\u003e严重级别和连接后果取决于具体路径。\u003ccode\u003eERROR\u003c/code\u003e、\u003ccode\u003eFATAL\u003c/code\u003e 和 \u003ccode\u003ePANIC\u003c/code\u003e 是不同的协议严重级别；扩展测试代码甚至可以在 \u003ccode\u003eNOTICE\u003c/code\u003e 中显式携带 \u003ccode\u003eXX000\u003c/code\u003e。应把严重级别、事务状态、连接状态、源码位置和完整诊断放在一起读取。\u003c/p\u003e\n\u003cp\u003e代表性案例 \u003ccode\u003einternal_error_safety_boundary\u003c/code\u003e 只做源码核验，未实测自然触发路径。由于强行制造内部损坏或故障会越过安全的临时数据库边界，PostgreSQL 18.6 和 10.21 上均记录为 \u003ccode\u003enot_applicable\u003c/code\u003e，也没有用手写 \u003ccode\u003eRAISE\u003c/code\u003e 冒充服务器内部失败。\u003c/p\u003e"},{"anchor":"meaning","heading":"含义与触发路径","html":"\u003cp\u003e18.6 的定义是在类别 XX 下的 \u003ccode\u003eXX000 E ERRCODE_INTERNAL_ERROR internal_error\u003c/code\u003e。这个类别注释有意保持宽泛。对于数据损坏（\u003ccode\u003eXX001\u003c/code\u003e）和索引损坏（\u003ccode\u003eXX002\u003c/code\u003e）还有更具体的代码；选用 \u003ccode\u003eXX000\u003c/code\u003e 不会自动把通用内部报文升级成这两种诊断。\u003c/p\u003e\n\u003cp\u003e需要区分两种源码模式：\u003c/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003e默认内部代码。\u003c/strong\u003e 后端路径调用没有显式 SQLSTATE 的 \u003ccode\u003eelog(ERROR, ...)\u003c/code\u003e，或以同样方式到达 \u003ccode\u003eereport(ERROR, ...)\u003c/code\u003e。\u003ccode\u003eelog.c\u003c/code\u003e 会把这个错误初始化为 \u003ccode\u003eXX000\u003c/code\u003e，但报文和源码函数仍能指出所属子系统。\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003e显式内部代码。\u003c/strong\u003e 某条路径调用 \u003ccode\u003eerrcode(ERRCODE_INTERNAL_ERROR)\u003c/code\u003e，因为某个不变量或操作系统/服务结果被视为不可能或不可用。18.6 中的例子包括 B-tree 重检时无法重新找到索引元组、动态共享内存控制段无效、尝试重新定义非占位配置参数，以及 UUID 生成无法取得强随机字节。\u003c/li\u003e\n\u003c/ol\u003e\n\u003cp\u003e显式代码不会强制唯一的严重级别。共享内存路径报告 \u003ccode\u003eFATAL\u003c/code\u003e，而 B-tree、GUC 和 UUID 例子报告 \u003ccode\u003eERROR\u003c/code\u003e。一个访问控制测试钩子还会在 \u003ccode\u003eNOTICE\u003c/code\u003e 中显式报告 \u003ccode\u003eERRCODE_INTERNAL_ERROR\u003c/code\u003e，说明 SQLSTATE 与严重级别是分开的字段。这个钩子只是源码例子，不是普通生产提示表示内部故障的证据。\u003c/p\u003e"},{"anchor":"messages","heading":"报文与诊断","html":"\u003cp\u003e\u003ccode\u003eXX000\u003c/code\u003e 没有统一的主报文。源码中可见的代表性模板包括：\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ccode\u003efailed to re-find tuple within index \"%s\"\u003c/code\u003e，并提示索引表达式可能不是不可变的（\u003ccode\u003enbtinsert.c\u003c/code\u003e）。\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003edynamic shared memory control segment is not valid\u003c/code\u003e，出现在 \u003ccode\u003eFATAL\u003c/code\u003e 初始化路径（\u003ccode\u003edsm.c\u003c/code\u003e）。\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eattempt to redefine parameter \"%s\"\u003c/code\u003e（\u003ccode\u003eguc.c\u003c/code\u003e）和 \u003ccode\u003ecould not generate random values\u003c/code\u003e（\u003ccode\u003euuid.c\u003c/code\u003e）。\u003c/li\u003e\n\u003cli\u003e默认 \u003ccode\u003eelog(ERROR, ...)\u003c/code\u003e 路径中的 \u003ccode\u003einvalid page pd_lower %u pd_upper %u pd_special %u\u003c/code\u003e（\u003ccode\u003ebufmask.c\u003c/code\u003e）；没有其他显式代码替换时，默认映射会提供 \u003ccode\u003eXX000\u003c/code\u003e。\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003e这些都是具体路径的诊断模板。应记录 SQLSTATE、两种严重级别字段、主报文、详细信息、提示、上下文、源码文件、函数、行号、后端 PID、数据库和服务器版本。本地化文本和模板措辞可能变化；源码路径和结构化字段比报文子串更稳定。\u003c/p\u003e"},{"anchor":"diagnosis","heading":"诊断","html":"\u003cp\u003e在重试或重启前保留完整的客户端错误和对应服务器日志。先按协议严重级别分类：\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ccode\u003eERROR\u003c/code\u003e 通常会中止当前显式事务，但回滚后后端连接仍可使用。\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eFATAL\u003c/code\u003e 会结束后端会话，客户端需要建立新连接才能继续。\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ePANIC\u003c/code\u003e 是影响服务器的紧急路径，进程和连接后果必须根据服务器日志和进程监管状态确认。\u003c/li\u003e\n\u003cli\u003e显式携带 \u003ccode\u003eXX000\u003c/code\u003e 的 \u003ccode\u003eWARNING\u003c/code\u003e 或 \u003ccode\u003eNOTICE\u003c/code\u003e 具有不同控制流，单凭它既不能证明内部故障，也不能断言事务中止。\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003e随后按源码函数和子系统归类。检查是否有先发生的 I/O、内存、扩展、索引、配置或并发故障；比对确切服务器构建和固定源码版本；寻找是否重复出现。只有当诊断指向相关对象时，才使用只读的目录、索引或页面检查。不能仅凭类别名推断损坏，也不要用手写 \u003ccode\u003eRAISE EXCEPTION\u003c/code\u003e 来制造复现：那默认测试的是 \u003ccode\u003eP0001\u003c/code\u003e，不是服务器内部路径。\u003c/p\u003e"},{"anchor":"response","heading":"处理","html":"\u003cp\u003e按照严重级别和子系统处理。\u003ccode\u003eERROR\u003c/code\u003e 要先回滚事务再发无关命令；\u003ccode\u003eFATAL\u003c/code\u003e 后重新建立连接；\u003ccode\u003ePANIC\u003c/code\u003e 后遵循服务器重启和事故流程。内部错误若源码指向不变量、存储、索引或共享内存边界，不应盲目重试。\u003c/p\u003e\n\u003cp\u003e收集服务器版本、确切 SQL、后端和服务器日志、源码位置、关系对象或其他对象身份，以及近期配置和扩展变化。如果证据指向损坏，应根据事故流程在适当时停止写入，保留副本或快照，并使用 PostgreSQL 文档化的恢复与支持流程。如果证据指向没有损坏迹象的软件或扩展缺陷，则隔离可复现条件并比较受支持的版本。正确处理取决于这些证据，而不是 \u003ccode\u003eXX000\u003c/code\u003e 本身。\u003c/p\u003e"},{"anchor":"versions","heading":"版本","html":"\u003cp\u003e目录记录 \u003ccode\u003eXX000\u003c/code\u003e 存在于锁定的 7.4–8.4.22 pre-9.0 正式源码、9.0.23 至 18.6 的全部正式快照及 19 Beta 3 预览快照。同 tag 的 \u003ccode\u003eREL8_1_4\u003c/code\u003e \u003ccode\u003eerrcodes.sgml\u003c/code\u003e 表已经列出 \u003ccode\u003eXX000\u003c/code\u003e 和条件名 \u003ccode\u003einternal_error\u003c/code\u003e，因此至少可以确认 8.1.4 已有该条件名。9.0 头文件视图中的类标题为 \u003ccode\u003eInternal Error (PostgreSQL-specific error class)\u003c/code\u003e，到 9.1 的文本定义变为 \u003ccode\u003eInternal Error\u003c/code\u003e。7.0–7.3 仍有候选源码缺口；这些是目录观察边界，不是确切实现引入日期的断言。\u003c/p\u003e\n\u003cp\u003e18.6 固定源码 commit 为 \u003ccode\u003e724edf9bde9d356724ad384a2e196edc3c9f80f7\u003c/code\u003e。默认严重级别到代码的映射以及上面的源码路径均有 18.6 证据。代表性运行案例没有接受确定且安全的 SQL 触发方式，因此两个目标的运行时状态均保持 \u003ccode\u003enot_applicable\u003c/code\u003e。\u003c/p\u003e"},{"anchor":"related","heading":"相关","html":"\u003cp\u003e\u003ca href=\"/wiki/sqlstate/XX001/\"\u003e\u003ccode\u003eXX001\u003c/code\u003e — \u003ccode\u003edata_corrupted\u003c/code\u003e\u003c/a\u003e 和 \u003ca href=\"/wiki/sqlstate/XX002/\"\u003e\u003ccode\u003eXX002\u003c/code\u003e — \u003ccode\u003eindex_corrupted\u003c/code\u003e\u003c/a\u003e 是更具体的损坏条件。\u003ca href=\"/wiki/sqlstate/P0001/\"\u003e\u003ccode\u003eP0001\u003c/code\u003e — \u003ccode\u003eraise_exception\u003c/code\u003e\u003c/a\u003e 是没有代码的 PL/pgSQL \u003ccode\u003eRAISE EXCEPTION\u003c/code\u003e 的通常默认值。\u003ca href=\"/wiki/sqlstate/57P01/\"\u003e\u003ccode\u003e57P01\u003c/code\u003e — \u003ccode\u003eadmin_shutdown\u003c/code\u003e\u003c/a\u003e 是不同类别的服务器连接事件。\u003ca href=\"/wiki/sqlstate/25P02/\"\u003e\u003ccode\u003e25P02\u003c/code\u003e — \u003ccode\u003ein_failed_sql_transaction\u003c/code\u003e\u003c/a\u003e 是前一个错误导致的后续事务状态，不是 \u003ccode\u003eXX000\u003c/code\u003e 的同义词。\u003c/p\u003e"},{"anchor":"sources","heading":"来源","html":"\u003cp\u003e结构化证据记录在\u003ca href=\"#sources\"\u003e公开证据 JSON\u003c/a\u003e中。源码记录固定到 PostgreSQL commit \u003ccode\u003e724edf9bde9d356724ad384a2e196edc3c9f80f7\u003c/code\u003e；运行时记录保留精确的源码边界案例 ID 和两个目标摘要。\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ccode\u003esrc.errcodes.18.6\u003c/code\u003e — \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/errcodes.txt#L496-L502\"\u003e\u003ccode\u003eerrcodes.txt\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003esrc.elog.18.6\u003c/code\u003e — \u003ca href=\"https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/error/elog.c#L442-L454\"\u003e\u003ccode\u003eelog.c\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003esrc.nbtinsert.18.6\u003c/code\u003e、\u003ccode\u003esrc.dsm.18.6\u003c/code\u003e、\u003ccode\u003esrc.guc.18.6\u003c/code\u003e、\u003ccode\u003esrc.uuid.18.6\u003c/code\u003e 与 \u003ccode\u003esrc.bufmask.18.6\u003c/code\u003e — 源码确认的内部路径\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003esrc.oat-hooks.18.6\u003c/code\u003e — 在 \u003ccode\u003eNOTICE\u003c/code\u003e 中显式提供内部代码\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003edoc.protocol.18\u003c/code\u003e — \u003ca href=\"/docs/18/protocol-error-fields.html\"\u003eError and Notice Message Fields\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e"}],"summary":"内部错误，也是未显式指定代码的 ERROR 默认码。","title":"XX000 — internal_error（内部错误）","translation_source_rev":"b4f5852e740841101b77ae19b72b03a6cc57330308b8e2b264d6155114a733fb"}},"RequestedLocale":"zh-Hans","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20","8.1","8.2","8.3","8.4","9.0","9.1","9.2","9.3","9.4","9.5","9.6"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":null,"SQLState":{"aliases":[],"catalogue_notes":{"earliest_observed":"7.4","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":"present","preview_scope":["19beta3"]},"class":"XX","class_name":"Internal Error","condition_name":"internal_error","condition_names":["internal_error"],"definition_changes":[{"evidence_refs":["postgresql:REL9_0_23:src/include/utils/errcodes.h","postgresql:REL9_1_0:src/backend/utils/errcodes.txt"],"first_observed":"9.1.0","from":["Internal Error (PostgreSQL-specific error class)"],"kind":"class_title","notes":"Observed definition change between fixed release snapshots; exact commit introduction may precede the first release tag.","to":["Internal Error"]}],"english_manuals":{"10":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"9607b57e9f639b61785677ba4d226f5889fe1d19c8bf55a3337691899a9073cd","slug":"10"},"lang":"en","sqlstate":"XX000"},"11":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"3a024e38263ad77de228eed7930b842b42dc1d5cab9ca3727be8eed872ec9539","slug":"11"},"lang":"en","sqlstate":"XX000"},"12":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"1444bd6a138537cd75be88a220ee9472ac528f0cfc58758e49636d85455efe98","slug":"12"},"lang":"en","sqlstate":"XX000"},"13":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"4a3ef8af218e5736dfde8660ba609e84233b6b3bac7e0210ff8724cf1b27b2db","slug":"13"},"lang":"en","sqlstate":"XX000"},"14":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"1c12e83304e0f4ff64c9d98ca5e3007df6756932ed19867a4fa0e0650f6c5751","slug":"14"},"lang":"en","sqlstate":"XX000"},"15":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"2161f58f6e87f6535b3b1f3d4661427bb6765f4f6b074fcc16fac97594b50599","slug":"15"},"lang":"en","sqlstate":"XX000"},"16":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"928e705933d7c3d018ae3fba9d800b34e6325746d157339dce878473c519d100","slug":"16"},"lang":"en","sqlstate":"XX000"},"17":{"aliases":[],"class_name":"Internal 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Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"0d3f602127cd137cf343b32d5fa78f175eeb6cdcb6353b1f6f998ede6cb7b911","slug":"devel"},"lang":"en","sqlstate":"XX000"},"8.1":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"0177b8818643540dec7bbef1fe92b60a3961debd52a68412301647ca146c7f2d","slug":"8.1"},"lang":"en","sqlstate":"XX000"},"8.2":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"d65bf7cff5958c304352c974e477183e21efe9bd68e03786001874653bf66963","slug":"8.2"},"lang":"en","sqlstate":"XX000"},"8.3":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"118059002973cdec5466ed3cabe7c9370b4c93d8ab542b8661d0eeb50cf6950d","slug":"8.3"},"lang":"en","sqlstate":"XX000"},"8.4":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"d63b10001be0581484022e33b78124a36bb3bd68d3ebe022cd7dfb375233432f","slug":"8.4"},"lang":"en","sqlstate":"XX000"},"9.0":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"658fc09c4c10eed7ac7dea4ed3e3eff8cc5791eb5af26b7b4a31b0f863b316db","slug":"9.0"},"lang":"en","sqlstate":"XX000"},"9.1":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"2d118b06c3b644c28b3ddefe9e4bef99a180321582209332372a5318f5bf8d1c","slug":"9.1"},"lang":"en","sqlstate":"XX000"},"9.2":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"2a37575b39c858d37c58fc4de6a16109554fd3306602294180d78faa1170d2cd","slug":"9.2"},"lang":"en","sqlstate":"XX000"},"9.3":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"2214b6869d764f7fba7221aefcdf1ab049b55ad51d63aa52054f3cd2c2533ae9","slug":"9.3"},"lang":"en","sqlstate":"XX000"},"9.4":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"7243e2d653befe88733222ede67958f0c4b7fae967b58eb97807aeb3f32b4096","slug":"9.4"},"lang":"en","sqlstate":"XX000"},"9.5":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"d40bc67cb331f1e4ccc0821ff57832c6c230edb0dce3ba4249defd21ae7ea29d","slug":"9.5"},"lang":"en","sqlstate":"XX000"},"9.6":{"aliases":[],"class_name":"Internal Error","condition_name":"internal_error","doc":{"anchor":"ERRCODES-APPENDIX","file":"errcodes-appendix.html","lang":"en","sha256":"2ab55e487571c8998ec39b3d1bbae29ac6fc5c310875bee422d9a7b8b3fde5b3","slug":"9.6"},"lang":"en","sqlstate":"XX000"}},"history_boundary":{"earliest_observed":"7.4","formal_tag_count":351,"gaps":[{"after":"18.6","before":"18.4","reason":"Non-adjacent release tags or a source gap; no removal is 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in a PostgreSQL release definition file is established; runtime throw/use scanning is maintained 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old definition path and same-tag documentation were locked for the observed 7.4..8.4 tags; this is a definition presence bound, not a runtime path or precise introducing commit.","scope":"pre9-definition-history","status":"definition_only"}]},"Evidence":[{"Kind":"cases","Ordinal":0,"ID":"internal_error_safety_boundary","ServerVersion":null,"Status":null,"Payload":{"assertions":["The directory and source paths are recorded","The batch marks the natural runtime trigger not applicable rather than fabricating one"],"case_id":"internal_error_safety_boundary","cleanup":"No runtime resources are created.","has_snippet":false,"position":0,"preconditions":["A source-confirmed internal error path"],"repair":"Preserve diagnostics, stop treating the session as healthy when appropriate, and investigate the exact server path with supportable evidence.","trigger":"No deterministic safe SQL trigger is used; forcing internal corruption would violate the disposable-case safety 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UUID generation failure."}},{"Kind":"claims","Ordinal":3,"ID":"paths.default-elog","ServerVersion":null,"Status":null,"Payload":{"claim_id":"paths.default-elog","limits":"The source example is a diagnostic invariant check; a real occurrence requires the exact runtime path and environment.","method":"Read the bufmask elog call and the error-stack default mapping.","position":3,"runtime":[],"sources":["src.bufmask.18.6","src.elog.18.6"],"statement":"A default elog(ERROR, ...) path such as the invalid-page check starts with XX000 through the generic severity mapping when it supplies no explicit SQLSTATE."}},{"Kind":"claims","Ordinal":4,"ID":"paths.severity-separation","ServerVersion":null,"Status":null,"Payload":{"claim_id":"paths.severity-separation","limits":"The OAT hook is test-module code and does not represent normal production internal-error behavior.","method":"Read each ereport level alongside its explicit errcode and compare the protocol severity 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The same-tag REL8_1_4 errcodes.sgml row already lists XX000 as internal_error, confirming that condition-name observation by 8.1.4. The class title changes between the 9.0 header and 9.1 text definitions; candidate source gaps remain for 7.0–7.3. These are presence boundaries, not exact implementation introduction dates."}},{"Kind":"messages","Ordinal":0,"ID":"message.index-refind","ServerVersion":null,"Status":null,"Payload":{"limits":"The message belongs to the UNIQUE_CHECK_EXISTING btree path and carries a relation/constraint context.","message_id":"message.index-refind","path":"","position":0,"raw":{"hint_template":"This may be because of a non-immutable index expression.","id":"message.index-refind","limits":"The message belongs to the UNIQUE_CHECK_EXISTING btree path and carries a relation/constraint context.","primary_template":"failed to re-find tuple within index \"%s\"","severity_source":"explicit ERROR","sources":["src.nbtinsert.18.6"],"sqlstate":"XX000"},"severity":"explicit ERROR","sources":["src.nbtinsert.18.6"],"templates":[{"kind":"primary","literal":"failed to re-find tuple within index \" \"","position":0,"role":"","template":"failed to re-find tuple within index \"%s\""},{"kind":"hint","literal":"This may be because of a non-immutable index expression.","position":1,"role":"","template":"This may be because of a non-immutable index expression."}]}},{"Kind":"messages","Ordinal":1,"ID":"message.dsm-fatal","ServerVersion":null,"Status":null,"Payload":{"limits":"This path terminates the backend session; it is not a generic client-side error template.","message_id":"message.dsm-fatal","path":"","position":1,"raw":{"id":"message.dsm-fatal","limits":"This path terminates the backend session; it is not a generic client-side error template.","primary_template":"dynamic shared memory control segment is not valid","severity_source":"explicit FATAL","sources":["src.dsm.18.6"],"sqlstate":"XX000"},"severity":"explicit FATAL","sources":["src.dsm.18.6"],"templates":[{"kind":"primary","literal":"dynamic shared memory control segment is not valid","position":0,"role":"","template":"dynamic shared memory control segment is not 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