Bug 542507 - [PostgreSQL] The db_user sometimes cannot connect to the "template1" database

Bugzilla/DB.pm

@@ -247,7 +247,6 @@ sub _get_no_db_connection {
     my ($sql_server) = @_;
     my $dbh;
     my %connect_params = %{ Bugzilla->localconfig };
-    $connect_params{db_name} = '';
     my $conn_success = eval {
         $dbh = _connect(\%connect_params);
     };

Bugzilla/DB/Pg.pm

@@ -36,14 +36,9 @@ use constant BLOB_TYPE => { pg_type => DBD::Pg::PG_BYTEA };
 
 sub new {
     my ($class, $params) = @_;
-    my ($user, $pass, $host, $dbname, $port) = 
+    my ($user, $pass, $host, $dbname, $port) =
         @$params{qw(db_user db_pass db_host db_name db_port)};
 
-    # The default database name for PostgreSQL. We have
-    # to connect to SOME database, even if we have
-    # no $dbname parameter.
-    $dbname ||= 'template1';
-
     # construct the DSN from the parameters we got
     my $dsn = "dbi:Pg:dbname=$dbname";
     $dsn .= ";host=$host" if $host;

docs/en/rst/installing/postgresql.rst

@@ -14,8 +14,8 @@ server is started when the machine boots.
 
 .. _posgresql-add-user:
 
-Add a User
-==========
+Add a User and Create a DB
+==========================
 
 You need to add a new user to PostgreSQL for the Bugzilla
 application to use when accessing the database. The following instructions
@@ -29,12 +29,18 @@ then switch to being the postgres (Unix) user:
 
 As the postgres user, you then need to create a new user:
 
-:command:`createuser -U postgres -dRSP bugs`
+:command:`createuser -U postgres -DRSP bugs`
 
 When asked for a password, provide one and write it down for later reference.
 
 The created user will not be a superuser (-S) and will not be able to create
-new users (-R). He will only have the ability to create databases (-d).
+new users (-R) or create databases (-D).
+
+Next we will create a database for bugzilla to use
+
+:command:`createdb -U postgress -O bugs bugs`
+
+This will create a database named `bugs` that is owned (-O) by the `bugs` user.
 
 .. _postgresql-access:
 

template/en/default/setup/strings.txt.pl

@@ -141,6 +141,7 @@ END
     localconfig_db_name => <<'END',
 The name of the database. For Oracle, this is the database's SID. For
 SQLite, this is a name (or path) for the DB file.
+For postgres, this database must already exist and be writable by $db_user.
 END
     localconfig_db_pass => <<'END',
 Enter your database password here. It's normally advisable to specify