Moving:
- review this codex: http://codex.wordpress.org/Moving_WordPress
‘Error establishing a database connection’:
- If you get a page featuring the message "Error Establishing Database Connection," this means that there is a problem with the connection to your database and there could be a number of reasons for this. The following codex lists possible reasons and solutions:
http://codex.wordpress.org/Common_WordPress_Errors#Error_Establishing_Database_Connection