"Ed L." <pgsql(at)bluepolka(dot)net> writes:
> After a reboot (and usually after an OS patch) on our HP-UX 11.23
> 64-bit Itanium DB servers, our libpq/DBD::Pg libraries cease to
> work. Instead, they give the standard message you get when the
> DB cluster is not running.
Try ktrace'ing the client to see what it's doing at the kernel-call level.
(I think HPUX's equivalent is just called "trace" btw.)
regards, tom lane