08004 — sqlserver_rejected_establishment_of_sqlconnection

PostgreSQL SQLSTATE 08004: sqlserver_rejected_establishment_of_sqlconnection, source-backed diagnosis and recovery guidance.

08004

At a glance

SQLSTATE 08004 is sqlserver_rejected_establishment_of_sqlconnection in Class 08. 08004 is the SQL-standard name for a server-rejected connection establishment. The fixed PostgreSQL 18.6 and 10.23 core-call scans contain no resolved PostgreSQL ereport path for this code.

Field	Value
SQLSTATE	`08004`
Condition	`sqlserver_rejected_establishment_of_sqlconnection`
Status	`active`
Known present by	`7.4`
Locked snapshots	`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, 19beta3`
Macros	`ERRCODE_SQLSERVER_REJECTED_ESTABLISHMENT_OF_SQLCONNECTION`
Aliases	`—`

Meaning

08004 is the SQL-standard name for a server-rejected connection establishment. The fixed PostgreSQL 18.6 and 10.23 core-call scans contain no resolved PostgreSQL ereport path for this code.

Diagnosis

Use the server ErrorResponse and authentication logs to identify the concrete condition. PostgreSQL paths in this scope use specific codes such as 28000 or 28P01; a client-side exception without a server field is not evidence for 08004.

Response

Fix the actual authentication, authorization, or endpoint problem and open a new connection. Keep 08004 as a definition/reference boundary here; no synthetic RAISE or fake rejected-login case is claimed.

Messages

This scope has no confirmed fixed primary-message template for 08004; the available definition/source records do not establish one. Do not treat a client exception without a matching server diagnostic as proof of 08004.

Representative case

This page has no selected natural SQL run. The structured evidence records a source or definition boundary; a client-side RAISE would not represent a backend mechanism.

Versions

The generated facts table records the locked catalogue snapshots and earliest observed definition. This page has no selected natural SQL run; its fixed REL_18_6/REL_10_23 source boundary must not be read as an observed runtime result or as a claim about every intermediate release.

Sources

src.errcodes.18.6 — src/backend/utils/errcodes.txt at REL_18_6 commit 724edf9bde9d356724ad384a2e196edc3c9f80f7; fixed blob SHA-256 6e8de346643ba84aa3c9c6a73360acfc7b2dfb89162c06c08ce9bf5bcd5bbcba (source).
src.calls.REL_18_6 / src.calls.REL_10_23 — fixed local call scans, SHA-256 9ee8a0e81d8f0825c5c1ae45583439859a26e602bdd4ce2f2a62aa278867ccbf / 00d16d3eb01b71ccf1b245c8f3102f9d0ec9f36fb02777b8dd1b99fcb263040c; these scans preserve the resolved call context used by the claims.