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Avoid xid error from age() function when run on Hot Standby

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Simon Riggs
2012-05-09 13:56:24 +01:00
parent 773b5e0efa
commit 5829387381
1 changed files with 4 additions and 1 deletions
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5
src/backend/utils/adt/xid.c
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@@ -93,7 +93,10 @@ Datum
xid_age(PG_FUNCTION_ARGS) xid_age(PG_FUNCTION_ARGS)
{ {
TransactionId xid = PG_GETARG_TRANSACTIONID(0); TransactionId xid = PG_GETARG_TRANSACTIONID(0);
TransactionId now = GetTopTransactionId(); TransactionId now = GetTopTransactionIdIfAny();
if (!TransactionIdIsValid(now))
now = ReadNewTransactionId();
/* Permanent XIDs are always infinitely old */ /* Permanent XIDs are always infinitely old */
if (!TransactionIdIsNormal(xid)) if (!TransactionIdIsNormal(xid))