On Mon, Oct 15, 2012 at 3:31 PM, Craig Ringer 
<ringerc@ringerc.id.au> wrote:
 OK, that sounds more like a problem. It wasn't clear from your original post that it was replaying used sequence values.
 SIGINT should normally just terminate the statement, eg:
 regress=# SELECT pg_sleep(100);
 ERROR:  canceling statement due to user request
 so I agree that something isn't right here.
 Is this something you've been able to reproduce? Or is it a one-off incident so far?
 --
 Craig Ringer
It is just one-off incident. We have increased sequences values and since friday everything is running fine.
We haven't tried to reproduce this situation. 
Michał Hankiewicz