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SQLSTATE / CLASS HV · FOREIGN DATA WRAPPER ERROR (SQL/MED)

HV00K

Read PG 18 manual ↗

fdw_reply_handle

SQLSTATE
HV00K
Condition name
fdw_reply_handle
Class
Foreign Data Wrapper Error (SQL/MED)
Source macro
ERRCODE_FDW_REPLY_HANDLE
Evidence
Definition only
Analysis & operational context

English SQLSTATE atlas: authored explanations and source/runtime evidence are separate from the manual definitions. View source ↗

<h1>HV00K — fdw_reply_handle</h1>

At a glance

HV00K is the SQL/MED reply-handle condition. PostgreSQL 18.6 defines it, but the locked core/contrib scan has no direct resolved HV00K report group; the condition does not by itself say whether a reply handle is missing, stale, or otherwise unusable.

Meaning

An FDW that executes asynchronously or in stages may keep a handle for a remote reply. The API definition does not prescribe the handle representation or a universal state machine. Do not equate this condition with HV00B unless the wrapper's source identifies the same object.

Messages and diagnostics

No fixed 18.6 message is confirmed. Preserve the reply/operation identity, callback phase, remote request status, wrapper version, and all protocol fields.

Diagnosis

Locate the wrapper's request submission and reply-consumption code. Check whether the handle was consumed twice, released early, or used after a remote cancellation/disconnect. The source scan does not establish behavior for external wrappers.

Response

Follow the wrapper's reply lifecycle and recreate the remote request only when its API says that is safe. For writes, establish completion from the remote system before repeating a request; HV00K alone is not a retry guarantee.

Versions

HV00K is observed from 9.1.0 through 18.6 and 19 Beta 3; pre-9 definition files did not contain it. No exact implementation introduction is claimed.

Sources

Source evidence

Evidence belongs to the frozen source and runtime versions listed here. It is not a runtime verification of the selected manual version.

HV00K is fdw_reply_handle in SQL/MED Class HV.

Method: Read the fixed definition row and macro.

src.errcodes.18.6

No direct HV00K report group was resolved in the locked PostgreSQL 18.6 core/contrib call scan.

Method: Compare resolved report groups with the macro mapping.

Limits: The generic FDW API boundary does not identify an emitter for this SQLSTATE. The scan does not cover external wrappers, drivers, remote systems, or user callbacks.

src.calls.REL_18_6 src.fdwapi.18.6

Message templates

No extracted message template is attached to this condition.

Reproduction & repair cases

No reproduction case is attached to this condition.

Recorded runtime evidence

No runtime observation is attached to this entry.

Version history 1
  1. PG 9.0 → 9.1added

Definition snapshot: english-manuals:c801699bfa48f40f002c07d9783… · English manual source