Hello people, My initdb problem has been solved (PostgreSQL 8.2.4, Mac OS X 10.3.9). I thought I would post a brief summary, but first I'd like to thank everyone on this list who so kindly and generously made suggestions. I'd particularly like to thank Sean Dooley <srd1@xxxxxxxxxxxxxxxx>, who assisted me greatly offlist, and whose suggestions eventually provided the solution. Earlier in this thread it was suggested that another, older version of postgres may already be running on my machine, but I believe that not to have been the case. One of Sean's suggestions was to run the following in Terminal: ps -aux | grep post which returned nothing other than itself, whereas run earlier today it shows: postgres 686 0.0 0.2 40484 1284 std- S Fri07AM 0:03.53 /opt/local/lib/postgresql82/bi postgres 689 0.0 0.1 40484 484 ?? Ss Fri07AM 1:00.27 postgres: writer process postgres 690 0.0 0.0 36460 168 ?? Ss Fri07AM 0:07.16 postgres: stats collector proc postgres 1228 0.0 0.4 41092 2804 ?? Ss 7:57AM 0:00.46 postgres: acorn testdb 127.0.0 postgres 1230 0.0 0.4 41092 2428 ?? Ss 7:58AM 0:00.18 postgres: acorn postgres 127.0 acorn 1255 0.0 0.0 8860 120 std R+ 9:56AM 0:00.00 grep post Postgres is also now clearly visible in Activity Monitor (five times, as above). What worked for me was the following: At Sean's suggestion I uninstalled the Postgres 8.2.4 I'd got from the universal binary installer, and instead used macports <http://svn.macosforge.org/repository/macports/downloads/> (NB, requires apple developer tools be already installed) to install postgres: sudo port selfupdate sudo port install postgresql82 sudo port install postgresql82-doc sudo port install postgresql82-server The latter installation handily advised (in Terminal) editing the file /etc/hostconfig by adding the line: POSTGRESQL82-SERVER=-YES- to make postgres server run on startup. I then ran through the following: sudo mkdir -p /opt/local/var/db/postgresql82/defaultdb sudo chown postgres:postgres /opt/local/var/db/postgresql82/defaultdb sudo su postgres -c '/opt/local/lib/postgresql82/bin/initdb -D /opt/local/var/db/postgresql82/defaultdb' which created the cluster. At the end of that Terminal advised using: /opt/local/lib/postgresql82/bin/postgres -D /opt/local/var/db/postgresql82/defaultdb or /opt/local/lib/postgresql82/bin/pg_ctl -D /opt/local/var/db/postgresql82/defaultdb -l logfile start to start the database server, but what actually worked was the following: sudo su postgres -c '/opt/local/lib/postgresql82/bin/pg_ctl -D /opt/local/var/db/postgresql82/defaultdb start' (this fed the log back to Terminal). Beware when trying to specify a logfile location that one chooses a directory to which the postgres user can write--i.e. it may be simpler to use a full path, such as: sudo su postgres -c '/opt/local/lib/postgresql82/bin/pg_ctl -D /opt/local/var/db/postgresql82/defaultdb -l /opt/local/var/db/postgresql82/defaultdb/logfile start' as otherwise the logfile will default to creation in the current directory, for which postgres may not have permissions. Now that I have postgres running I think it best if I soon leave this forum, and join another more suited to the no-doubt many other very basic problems and questions I shall encounter. Thanks again. Cheers! Joe