Thx for yours helps.
But Isn't there a possibility that a backend has more than one
transaction with locks?
Cedric.
Tom Lane wrote:
> Oliver Jowett <oliver@opencloud.com> writes:
>
>>(later) A bit of experimentation yields this (I'm sure there's a better
>>way):
>> select transaction from pg_locks where pid = pg_backend_pid();
>
>
> You'd need to qualify that more, since as-is it will also show rows for
> other locks the transaction holds. Possibly "where transaction is not
> null" will be sufficient.
>
> regards, tom lane
>
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Cédric Coulon cedric.coulon@lina.univ-nantes.fr
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