Thomas Kellerer <spam_eater@gmx.net> writes:
> Tom Lane wrote on 27.12.2011 20:22:
>> More specifically, look to see if the current transaction has assigned
>> itself a transaction ID. I think the easiest place to see this is in
>> pg_locks --- it will be holding exclusive lock on a TransactionId object
>> if so.
> Thanks for the answer. I came up with the following statement:
> select count(*)
> from pg_locks
> where pid = pg_backend_pid()
> and locktype in ('transactionid')
> does that look right to you?
No. You forgot the exclusive-lock condition.
regards, tom lane