HV00B — fdw_invalid_handle
HV00B — fdw_invalid_handle
At a glance
HV00B names an invalid FDW handle: a wrapper received a handle that is unknown, closed, or invalid for the current operation. The PostgreSQL 18.6 core/contrib call scan has no resolved direct HV00B report group, so the handle type and message are implementation-specific.
| Field | Value |
|---|---|
| SQLSTATE | HV00B |
| Condition | fdw_invalid_handle |
| Status | active |
| Known present by | 9.1.0 |
| Locked snapshots | 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_FDW_INVALID_HANDLE |
| Aliases | — |
Meaning
SQL/MED uses “handle” for an implementation-owned reference, not a PostgreSQL relation OID or a SQL transaction ID. A wrapper might use one for a remote connection, cursor, reply, or execution object; these are possible examples, not an established emitter path in this batch. The class definition alone does not identify which one.
Messages and diagnostics
No direct 18.6 core/contrib message variant was resolved. Record the wrapper name/version, handle kind and lifetime, callback phase, foreign server/table, and the complete diagnostic. A remote server’s connection failure may be a different SQLSTATE.
Diagnosis
Trace creation, transfer, reuse, and close of the handle in the wrapper source. Check whether a scan or modification callback outlived a connection, whether a callback ran after cleanup, and whether the wrapper’s ABI matches the server. Do not infer that a NULL SQL value is an invalid handle.
Response
Repair the wrapper’s handle lifecycle or recreate the wrapper-owned connection/object according to its API. If the wrapper cannot establish whether a write completed, inspect remote logs before repeating it. An unchanged request is unlikely to repair a stale or closed handle.
Versions
HV00B is present from 9.1.0 through 18.6 and in 19 Beta 3. The available pre-9 definition scan did not observe it; this is a history boundary, not an exact introduction claim.
Related
HV00K concerns a reply handle; HV009 concerns invalid null-pointer use; HV00N concerns establishing a connection.
Sources
errcodes.txt— definition, SHA-2566e8de346643ba84aa3c9c6a73360acfc7b2dfb89162c06c08ce9bf5bcd5bbcba.fdwapi.h— callback boundary.- Structured evidence — bounded source scan.