wordpress migration

make sure in the wp-config.php

$table_prefix  = 'wp_';     # the table prefix (eg. here 'wp_' )is same  on both old and new 

take mysqldump of wordpress databaes from old server and import it into the new server
and make changes to wp-config.php accordingly

In wordpress database

in eg. wp_options table
set the new values accordingly using phpmyadmin of migrating to another domain

siteurl  http://example.com

home     http://example.com

Due to permalinks , object not found error may come. To overcome that select the error item post and mark it as draft and again mark it as post and error will go away

in wp-admin --> posts

select post with error -->

status-- draft (update)

select post with error -->

status-- Published (update)

this error wont come if migration is within same domain name

example.com ---> example.com

but may arise if migration is done from 

example.com --> example.org