to answer my own question, it seems to only lock the tables on that one node.

On Thu, Jan 15, 2009 at 2:24 PM, Vick Khera <vivek at khera.org> wrote:
> if i run execute script() with the "execute only on" option to limit
> it to one node, does slony only take locks on that node, or does it
> lock all tables on all nodes?  i'm using it to run some table
>