Re: transaction safety

DaVinci <bombadil@wanadoo.es> writes:
>     procedencia    int2 references procedencia,
>     l�nea        int2 references l�nea,
>     empresa        int2 references empresa,

Depending on the data values you are working with, it could be that the
foreign key references cause interlocks --- ie, one transaction has to
wait to see if the other commits to know if it has a valid foreign key.

However, you still have not shown us a complete example that would allow
anyone else to reproduce your results.

            regards, tom lane