i cant connect to the database even though i entered the correct data(host='localhost', port='5432')
This is not a bug so this list/form is not the correct place to ask for help. Such requests should be directed to the -novice or -general list.
Your failure to include the exact error message you are getting is also a problem you should correct when you ask this question in a more appropriate forum. Likewise for actually explaining what software you are connecting with.
