Manual:$wgSharedDB

Details
The name of the shared database.

Shared database for multiple wikis. Presently used for storing a user table for single sign-on (actually not real SSO, since the user may still have to log in into each wiki seperatly, but at least registration has to be done only once). The server for this database must be the same as for the main database.


 * Read-access: Make sure that the database user you set in $wgDBuser has read-access to that database. It might be sufficient to grant read-access to the user table only.


 * Table-prefix: The databases needs to have matching (or no) table prefixes in order to work (tested with 1.9.1 towards 1.8.2).


 * EXPERIMENTAL!