08004 — 服务器拒绝建立 SQL 连接(sqlserver_rejected_establishment_of_sqlconnection)
服务器拒绝建立 SQL 连接。
英文手册覆盖始于 PostgreSQL 8.1. 来源历史与运行验证各自保留独立版本边界。
当前阅读 PG 18·选择有来源记录的版本
- aliases
- 未知
- class name
- Connection Exception
- condition name
- sqlserver_rejected_establishment_of_sqlconnection
- lang
- en
- sqlstate
- 08004
版本定义 PG 18
08004 — 服务器拒绝建立 SQL 连接
速览 {#at-a-glance}
SQLSTATE 08004 是 Class 08 中的 sqlserver_rejected_establishment_of_sqlconnection。08004 是 SQL 标准中“服务器拒绝建立连接”的名称。固定的 PostgreSQL 18.6 与 10.23 核心调用扫描没有解析出该码的 PostgreSQL ereport 路径。
含义 {#meaning}
08004 是 SQL 标准中“服务器拒绝建立连接”的名称。固定的 PostgreSQL 18.6 与 10.23 核心调用扫描没有解析出该码的 PostgreSQL ereport 路径。
诊断 {#diagnosis}
用服务器 ErrorResponse 和认证日志识别具体条件。本范围内 PostgreSQL 路径使用 28000、28P01 等更具体的码;只有客户端异常、没有服务器字段时,不能据此认定 08004。
处理 {#response}
修复实际认证、授权或端点问题后建立新连接。本页只记录定义与源码边界,不用客户端 RAISE 或伪造登录失败来冒充自然机制。
报文 {#messages}
本范围没有确认 08004 的固定主报文模板;现有定义/源码记录不足以建立固定文本。只有客户端异常而没有匹配的服务器诊断时,不能据此认定 08004。
代表案例 {#case}
本页没有选定的自然 SQL 运行。结构化证据记录的是源码或定义边界;客户端 RAISE 不能代表服务器机制。
版本 {#versions}
上面的生成事实表记录锁定的目录快照和最早观察到的定义。本页没有选定的自然 SQL 运行;固定的 REL_18_6/REL_10_23 源码边界不能当作实测结果,也不能据此推断所有中间版本的行为。
相关 {#related}
08001— sqlclient_unable_to_establish_sqlconnection28000— invalid_authorization_specification28P01— 相关条件
来源 {#sources}
src.errcodes.18.6—src/backend/utils/errcodes.txtatREL_18_6commit724edf9bde9d356724ad384a2e196edc3c9f80f7; fixed blob SHA-2566e8de346643ba84aa3c9c6a73360acfc7b2dfb89162c06c08ce9bf5bcd5bbcba(source).src.calls.REL_18_6/src.calls.REL_10_23— fixed local call scans, SHA-2569ee8a0e81d8f0825c5c1ae45583439859a26e602bdd4ce2f2a62aa278867ccbf/00d16d3eb01b71ccf1b245c8f3102f9d0ec9f36fb02777b8dd1b99fcb263040c; these scans preserve the resolved call context used by the claims.
比较版本
SQLSTATE 证据与已记录的运行版本
cases · source_boundary
{
"assertions": [],
"case_id": "source_boundary",
"cleanup": "Drop the case schema with an owner connection.",
"has_snippet": false,
"position": 0,
"preconditions": [
"A runner-owned disposable target is provisioned only if a source-boundary smoke run is requested."
],
"repair": "Use the concrete source path or component-specific documentation when it applies.",
"trigger": "No artificial SQL trigger is executed; this record preserves the fixed source/definition boundary.",
"versions": [
"10",
"18"
]
}claims · identity.class-and-condition
{
"claim_id": "identity.class-and-condition",
"limits": "Directory identity does not identify every backend or client path.",
"method": "Read the fixed errcodes.txt definition and the locked catalogue metadata.",
"position": 0,
"runtime": [],
"sources": [
"src.errcodes.18.6"
],
"statement": "08004 is the sqlserver_rejected_establishment_of_sqlconnection condition in Class 08."
}claims · mechanism.source-boundary
{
"claim_id": "mechanism.source-boundary",
"limits": "This is a bounded source claim; it is not an observed natural SQLSTATE case.",
"method": "Trace the fixed REL_18_6 and REL_10_23 source call scans and the recorded source paths.",
"position": 1,
"runtime": [],
"sources": [
"src.calls.REL_18_6",
"src.calls.REL_10_23"
],
"statement": "The fixed core scans contain no resolved PostgreSQL throw site for 08004. Keep the SQL-standard definition separate from concrete startup codes such as 28000 and 28P01."
}claims · versions.catalogue-boundary
{
"claim_id": "versions.catalogue-boundary",
"limits": "Presence in a definition file is not an exact behavioral introduction; this scope establishes no resolved fixed core emitter or universal message template and does not prove every intermediate release.",
"method": "Read the generated facts block and bounded fixed source/call-scan records; no runtime target summaries are used.",
"position": 2,
"runtime": [],
"sources": [
"src.errcodes.18.6",
"src.calls.REL_18_6",
"src.calls.REL_10_23"
],
"statement": "The locked catalogue records 08004 in the listed snapshots; this definition/source-only page has no selected natural runtime and only compares the fixed catalogue and bounded REL_18_6/REL_10_23 call-scan records."
}sources · src.errcodes.18.6
{
"commit": "724edf9bde9d356724ad384a2e196edc3c9f80f7",
"docs_url": "",
"kind": "upstream_source",
"location": "",
"path": "src/backend/utils/errcodes.txt",
"position": 0,
"sha256": "6e8de346643ba84aa3c9c6a73360acfc7b2dfb89162c06c08ce9bf5bcd5bbcba",
"source_id": "src.errcodes.18.6",
"tag": "REL_18_6",
"url": "https://github.com/postgres/postgres/blob/724edf9bde9d356724ad384a2e196edc3c9f80f7/src/backend/utils/errcodes.txt"
}sources · src.calls.REL_18_6
{
"commit": "",
"docs_url": "",
"kind": "local_artifact",
"location": "",
"path": "raw/calls/REL_18_6.jsonl",
"position": 1,
"sha256": "9ee8a0e81d8f0825c5c1ae45583439859a26e602bdd4ce2f2a62aa278867ccbf",
"source_id": "src.calls.REL_18_6",
"tag": "REL_18_6",
"url": ""
}sources · src.calls.REL_10_23
{
"commit": "",
"docs_url": "",
"kind": "local_artifact",
"location": "",
"path": "raw/calls/REL_10_23.jsonl",
"position": 2,
"sha256": "00d16d3eb01b71ccf1b245c8f3102f9d0ec9f36fb02777b8dd1b99fcb263040c",
"source_id": "src.calls.REL_10_23",
"tag": "REL_10_23",
"url": ""
}sources · manifest.08004
{
"commit": "",
"docs_url": "",
"kind": "local_artifact",
"location": "",
"path": "verify/cases/08004/cases.json",
"position": 3,
"sha256": "533ef5ec3f8813715da35f9daff8dcdd515e7ea1dcfe3ddb065993519c67b819",
"source_id": "manifest.08004",
"tag": "workspace",
"url": "verify/cases/08004/cases.json"
}来源引用
定义来源
center · PostgreSQL 18 · english-manuals:1f5831b5a65fb9ef8a6e60a1dcca05ede3ca0aa1b9e2e271dedf8c9697f004c5
正文语言: zh-Hans · english-manuals:1f5831b5a65fb9ef8a6e60a1dcca05ede3ca0aa1b9e2e271dedf8c9697f004c5