On Tue, Jul 22, 2008 at 9:48 AM, Greg Sabino Mullane <greg@xxxxxxxxxxxx> wrote: >> In case someone is wondering, the way to force DBI to use unix >> sockets is by not specifying a host and port in the connect call. > > Actually, the host defaults to the local socket. Using the port > may still be needed: if you leave it out, it simply uses the default > value (5432) if left out. Thus, for most purposes, just leaving > the host out is enough to cause a socket connection on the default > port. For the further illumination of the historical record, the best practice here is probably to use the pg_service.conf file, which may or may not live in /etc depending on your operating system. Then you can connect in DBI using dbi:Pg:service=whatever, and change the definition of "whatever" in pg_service.conf. This has the same semantics as PGSERVICE=whatever when using psql. It's a good idea to keep these connection details out of your program code. -jwb