Thomas Papke wrote:
> 1. i am running a large postgres 8.1.4 database in production. What
> is a good and safe way for an minor update to 8.1.8 (less downdown
> and possible jump back option)?
Using binary packages, install the new one over the old one, and if you
don't like it, install the old one over the new one.
> How riskful is an minor update for the data files?
Not riskful.
> 2. i am using two dualcore opterons with 8GB memory - if i am using
> the CFLAGS="-O2" option for compile optimization --> is there any
> real performance boost?
I don't think anyone has ever seriously considered building with
anything less than -O2 for anything but debugging purposes or coping
with buggy compilers on rare architectures. In other words, there
isn't any good reason not to do it.
--
Peter Eisentraut
http://developer.postgresql.org/~petere/
