I just made the mistake of trying to run pgbench without first running
createdb and got this:
pgbench: error: connection to database "" failed: could not connect to
socket "/tmp/.s.PGSQL.5432": FATAL: database "rhaas" does not exist
This looks pretty bogus because (1) I was not attempting to connect to
a database whose name is the empty string and (2) saying that it
couldn't connect to the socket is wrong, else it would not also be
showing a server message.
I haven't investigated why this is happening; apologies if this is a
known issue.
--
Robert Haas
EDB: http://www.enterprisedb.com