SQLSTATE / Class HV · Foreign Data Wrapper Error (SQL/MED)

HV00M

fdw_unable_to_create_reply

Reading PG 18current·documented in 17 of 22 versions, 9.1 to 20

8.1 8.2 8.3 8.4 9.0 9.1 9.2 9.3 9.4 9.5 9.6 10 11 12 13 14 15 16 17 18 19 20

SQLSTATE: HV00M
Condition name: fdw_unable_to_create_reply
Class: Foreign Data Wrapper Error (SQL/MED)
Source macro: ERRCODE_FDW_UNABLE_TO_CREATE_REPLY
Evidence: Definition only

Analysis & operational context

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

<h1>HV00M — fdw_unable_to_create_reply</h1>

At a glance

HV00M denotes failure to create an FDW reply object or result channel. The PostgreSQL 18.6 core/contrib scan has no direct resolved report group; the exact object and driver boundary must be read from the installed wrapper.

Meaning

An FDW may create an execution and a separate reply/result object. HV00M names failure of the latter setup; it does not prove that the remote statement was never sent.

Messages and diagnostics

No fixed core message is confirmed. Keep the operation, reply format, connection/handle state, wrapper and driver versions, and any remote diagnostic.

Diagnosis

Trace reply allocation/registration and the point at which the execution object was created. Distinguish local result-buffer failure from a remote protocol rejection. Check whether cleanup left a stale reply handle.

Response

Repair the wrapper's result-channel setup and clean up the affected handle according to its API. Before repeating a write, establish remote completion from the wrapper or remote logs; HV00M does not make an automatic retry safe.

Versions

HV00M is present from 9.1.0 through 18.6 and in 19 Beta 3; no pre-9 definition observation is available.

Sources

errcodes.txt — definition, SHA-256 6e8de346643ba84aa3c9c6a73360acfc7b2dfb89162c06c08ce9bf5bcd5bbcba.
fdwapi.h — callback boundary.
Structured evidence — bounded source scan.

Source evidence

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

HV00M is fdw_unable_to_create_reply in SQL/MED Class HV.

Method: Read the fixed definition row and macro.

Source: src/backend/utils/errcodes.txt

No direct HV00M 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.

Source: raw/calls/REL_18_6.jsonl · Source: src/include/foreign/fdwapi.h

src/backend/utils/errcodes.txt · REL_18_6 ·
724edf9bde9d356724ad384a2e196edc3c9f80f7
src/include/foreign/fdwapi.h · REL_18_6 ·
724edf9bde9d356724ad384a2e196edc3c9f80f7
raw/calls/REL_18_6.jsonl · ·

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

9.0 → 9.1 added

Definition snapshot: english-manuals:819ca06e5176419d4e66b51ef23… · English manual source