"H.J. Sanders" <hjs(at)rmax(dot)nl> writes:
> The next query runs into error 57014 in about 50 % of the cases. We
> certainly have not aborted the request. In the other 50 % it runs OK. The
> statement is executed
> in pgsql 7.4.8
Well, *something* sent that backend a SIGINT. You should look around
for possible causes. I've heard that some kernels use SIGINT for
resource-limit kills (ie, ulimit exceeded).
regards, tom lane