"Mark Steben" <msteben@xxxxxxxxxxxxxxx> writes: > Is it possible that, during startup, postmaster.pid takes a second or two to > be created and hadn't been created yet when the test was run? It's not instantaneous, for sure. For one thing, the kernel could be scheduling the postmaster at lower priority than the continued execution of your startup script. If you don't have any sleep at all in there then the risk of failure would be quite high, even assuming the postmaster would create the pidfile instantaneously once it gets to run. And there are other things it has to do first, like read the config file so it knows where the data directory is ... Since you say you're using pg_ctl, why don't you use its -w option and not let the script proceed until you know the postmaster is up? regards, tom lane -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin