Control Center enables you to register additional database backend engines so that you can use them to initialize and access Clusters. (The engine installed at the standard Location by the RPM is automatically detected). Engines used by currently defined Clusters are remembered by Control Center and listed on subsequent invocations of Control Center; Engines not used by any cluster are "forgotten" by Control Center on exit.
To register additional database backend engines, select the Add or Search buttons on the Browse Engines dialog.
If you select the Add button, the system responds by raising the Select Engine Path dialog. There you can type the base path for the Database Engine (the directory where the postmaster binary is, or the postmaster executable itself) or select that path by browsing the file system.
If you select the Search button, Control Center looks for locations where postmaster programs reside and fills a listbox with the paths where correctly installed Database Engines were found (if these are not already in the list of attached Engines in the Summary Area). Choose an engine and click OK.
The search function relies on the slocate(1) database to find the Engine files. If that database does not exist or is not up-to-date, the search may not find all the Engines that are installed on the system.