From: Simon Riggs Date: Wed, 9 May 2012 13:00:09 +0000 (+0100) Subject: Avoid xid error from age() function when run on Hot Standby X-Git-Tag: REL9_0_8~21 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d02918fc3e67104348dd7ba67b17df6836201ac0;p=postgresql Avoid xid error from age() function when run on Hot Standby --- diff --git a/src/backend/utils/adt/xid.c b/src/backend/utils/adt/xid.c index fcde92cb8a..7db6bb1a66 100644 --- a/src/backend/utils/adt/xid.c +++ b/src/backend/utils/adt/xid.c @@ -93,7 +93,10 @@ Datum xid_age(PG_FUNCTION_ARGS) { TransactionId xid = PG_GETARG_TRANSACTIONID(0); - TransactionId now = GetTopTransactionId(); + TransactionId now = GetTopTransactionIdIfAny(); + + if (!TransactionIdIsValid(now)) + now = ReadNewTransactionId(); /* Permanent XIDs are always infinitely old */ if (!TransactionIdIsNormal(xid))