 <p>If you want to share users informations database from a master to other(s) Joomla website(s), there's a better solution.</p> <p>The only requirement is all databases must be located on the same server + Joomla 2.5.x!</p> <p>Open PhpMyAdmin and apply this modifications :</p> <p><strong>xxxx1... are tables from master site<br /> xxxx2... are tables from client site</strong> </p> <pre><code>DROP TABLE xxxx2_session DROP TABLE xxxx2_usergroups DROP TABLE xxxx2_users DROP TABLE xxxx2_user_notes DROP TABLE xxxx2_user_profiles DROP TABLE xxxx2_user_usergroup_map CREATE VIEW xxxx2_users AS SELECT * FROM xxxx1.jos_users CREATE VIEW xxxx2_session AS SELECT * FROM xxxx1.jos_session CREATE VIEW xxxx2_usergroups AS SELECT * FROM xxxx1.jos_usergroups CREATE VIEW xxxx2_user_notes AS SELECT * FROM xxxx1.jos_user_notes CREATE VIEW xxxx2_user_profiles AS SELECT * FROM xxxx1.jos_profiles CREATE VIEW xxxx2_user_usergroup_map AS SELECT * FROM xxxx1.jos_usergroup_map </code></pre>