Has anyone managed to use Postgres for wiki and local db ?

Question

I've seen all over the internet questions and solutions for:
could not connect to database postgres: could not connect to server: No such file or directory
          Is the server running locally and accepting
          connections on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432"?
some of the solutions kind of stop the postgessql server. That is, apparently according to this
post by Todd  Heberlein, they stop the wiki and webpage servers but allow for your own db.
Actually I'd like to know if it is possible to have the same postgressql instal (the OS X Server) used for both the wiki\web\etc pages and for our own local db.
If so, how?
Much appreciated.

Answer 1

Thank you both.
Linc, I finally understood what was going on once I read the KB page.
There are already running two different postgress processes on the server.
One is for the server itself and other for our use.
Once I understood that, I could figure out what to do.
As for you, MrHoffman, I assume the page you pointed me to your page. If so, let me know there are some things that are different in ML and I can use what I did to post it there.
It was very helpfull.
Thank you so much.
Anyway, before I forget:
One has to look  at  "/Library/Server/PostgreSQL/Config/com.apple.postgres.plist
and check the listen_address for this file. Set it to 127.0.0.1 and everything works fine
Here is the output I get:
$ sudo serveradmin start postgres
Password:
postgres:state = "RUNNING"
petrescu:Config deivy$ serveradmin fullstatus postgres
postgres:dataDirHasBeenInitialized = yes
postgres:PG_VERSION = "9.2.1"
postgres:dataDir = "/Library/Server/PostgreSQL/Data"
postgres:postgresIsResponding = yes
postgres:dataDirIsDirectory = yes
postgres:PGserverVersion = 90201
postgres:dataDirExists = yes
postgres:setStateVersion = 1
Very happy! Thanks