08000

At a glance

SQLSTATE 08000 is connection_exception in Class 08. Connection exception is a broad connection-management condition. In the fixed PostgreSQL paths it is used by postgres_fdw when an abort-cleanup failure makes a foreign-server connection unusable; a refused client socket is not enough to claim this code.

Meaning

Connection exception is a broad connection-management condition. In the fixed PostgreSQL paths it is used by postgres_fdw when an abort-cleanup failure makes a foreign-server connection unusable; a refused client socket is not enough to claim this code.

Diagnosis

Inspect the server log and the foreign server name, backend PID, transaction outcome, and FDW cleanup path. Compare the message with 08001 (a connection could not be established) and 08006 (an established connection failed). A client library can expose a different exception or no SQLSTATE.

Response

Repair the foreign connection or its cleanup condition, finish the failed transaction according to the exact path, and retry the complete safe unit only after the remote outcome is known. Do not relabel a generic network exception as 08000.

Messages

The fixed postgres_fdw branch emits ERROR with primary connection to server "%s" cannot be used due to abort cleanup failure; the foreign server name is dynamic. This source-backed variant is narrower than a generic client socket refusal.

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.

Related

• 08001 — sqlclient_unable_to_establish_sqlconnection
• 08006 — connection_failure
• 08007 — transaction_resolution_unknown

Sources

• src.fdw-connection.18.6 — contrib/postgres_fdw/connection.c at REL_18_6 commit 724edf9bde9d356724ad384a2e196edc3c9f80f7; fixed blob SHA-256 67fc002657f2c7df6d93cbf99c933cbc103907d1857ed77aedbb85099ea4dda0 (source).
• src.fdw-connection.10.23 — contrib/postgres_fdw/connection.c at REL_10_23 commit 02991e79f8f58bc208f05dcc8af0c62dbe0a6ea4; fixed blob SHA-256 8a8b053e4ef599d95d0709744aa1dd5bb20047af9dc29b3f42cfba5785e525c5 (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.