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

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This commit is contained in:
Simon Riggs 2012-05-09 13:59:30 +01:00
parent 1c0e678678
commit e7c43ddc26
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)
{
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))