From 7a45756d652775f5e8d3dfa51772ac63d1c6922e Mon Sep 17 00:00:00 2001 From: Jim Jones Date: Sat, 17 Oct 2026 11:08:52 +0200 Subject: [PATCH v3 2/2] Reject currtid2() on unlogged tables during recovery Unlogged tables have no data on a standby, so reading one there must fail. currtid2() reads the table directly instead of going through the planner, so on a standby it failed with a confusing low-level message instead of the error that SELECT reports, both for a table and for a view on top of one: ERROR: could not open file "base/5/16384": No such file or directory Check for this case and report the same error as SELECT: ERROR: cannot access temporary or unlogged relations during recovery Author: Jim Jones Reported-by: Masahiko Sawada Discussion: https://www.postgresql.org/message-id/b6d71815-d362-4579-bf07-73eca01aee6d%40uni-muenster.de --- src/backend/utils/adt/tid.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/backend/utils/adt/tid.c b/src/backend/utils/adt/tid.c index a97873f91ba..f730b2f07c2 100644 --- a/src/backend/utils/adt/tid.c +++ b/src/backend/utils/adt/tid.c @@ -22,6 +22,7 @@ #include "access/sysattr.h" #include "access/table.h" #include "access/tableam.h" +#include "access/xlog.h" #include "catalog/namespace.h" #include "catalog/pg_type.h" #include "common/hashfn.h" @@ -345,6 +346,12 @@ currtid_internal(Relation rel, const ItemPointerData *tid) get_namespace_name(RelationGetNamespace(rel)), RelationGetRelationName(rel))); + /* Temporary and unlogged relations are inaccessible during recovery. */ + if (!RelationIsPermanent(rel) && RecoveryInProgress()) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("cannot access temporary or unlogged relations during recovery"))); + ItemPointerCopy(tid, result); snapshot = RegisterSnapshot(GetLatestSnapshot()); -- 2.56.0