We have two websites named as A.com and B.com for example. Both sites are hosted on same hosting server. We want to make A.com as a master and B.com as a salve site. Both websites are on Joomla 2.5.7 version, these websites has their own Joomla extensions with separate database and have their separate users. What we are looking now, we need to merge both databases and make a single database with their existing users. For doing this functionality we have used your component JMS multi site 1.2.95 is it possible with this component or not.

We also want to enable single sign on for our existing users as well as for new users. For this purpose we have purchased your single sign in plug-in. What we are looking for that if someone make his registration on A website with the user name ABCD and password XYZ then if he wants to login with the same user name ABCD in the website B is it possible or not with the help of both the plug-in.

We have purchased JMS Multisite component to merge users, share extensions and JMS Single Sign-on plugin for one log-in for both sites. Also we will add more 2-3 websites in this plugin to follow same process, we don't want to give multiple logins/registration for one user on our many websites.
Can you please let me know that it is possible to manage above mentioned functionality with the help of JMS components and plugins?

1) If you have a master website, it contains all the extensions required by all the websites. So A.com also contain the extensions required by B.com (event if they are not used).

It is not require to merge the DB to share the joomla users.
JMS can share the users across DBs.
What is required to share the users is to have a single MySQL table for the users and not have duplicated #__users table.

JMS does not provide tool to automatically merge the content of 2 existing websites.
JMS is an extension to create multiple website.

2) YES when you share the users between the website, JMS share the login info between the website.
The SSI for domain allow in addition to remain logged between website when you change of domain.
This avoid to re-login with the same "shared" login and password.

3) Yes you can share the users between the websites and also use the SSI for domain plugin to remain logged when you change of domains.


As you seem to have existing website, you need to verify that both website use exactly the same extension version before moving one of the website as a slave site under JMS.
You need the same extension version because you share the PHP code.