connect database

i want to connect to databases by a perl program.

my code:
#!/usr/local/bin/perl
use DBI;
$dbh=DBI->connect('dbi:Pg:hketutor','john','1357642',{RaiseError=>1}) or die $DBI::errstr;

where hketutor is my dbname, join is my login name, and 135764 is my password.

when i ran this perl program,
DBI->connect failed: ERROR: PQconnectdb() - Missing '=' after 'hketutor' in conninfo

what is the problem?
and I don't know how to specify port, port=?

pls help.
thanks.
mwhuenAsked:
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maneshrCommented:
The general format of the connect command is ...

$dbh = DBI->connect($data_source, $username, $password);

Examples of $data_source values:

dbi:DriverName:database_name
dbi:DriverName:database_name@hostname
dbi:DriverName:database_name~hostname!port
dbi:DriverName:database=database_name;host=hostname;port=port


hope that helps
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mwhuenAuthor Commented:
I know this general format,
but I have difficulty in the $data_source,

i need to connect to a database server which is provided by others, and i don't know what is the port, port=5432?
how can i get the port number? where?

if my database name is hketutor
the machine which install Pg is dhcp-2212.eee.hku.hk
my login name is mwhuen
and my password is 1234567
then

is $data_source =
dbi:Pg:hketutor~dhcp-2212.eee.hku.hk!5432
?
(if the port=5432)

or, how is right?
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maneshrCommented:
ok. here are a few suggestions to get the IP.

do you connect to the DB using any other mechanism? probably thru a GUI tool or something??

if you do the config/setup section of that toll has to have the IP.

can you connect to the DB from the command prompt??

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mwhuenAuthor Commented:
I know the IP of dhcp-2212.eee.hku.hk,
but i don't know the port of it.

can you provide me an exact $data_source to me?
dbi:Pg:hketutor~147.8 162.212!5432?
if the ip is 147.8.162.212.
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