The latest Firebird 2.5.x database can run in either Classic, SuperClassic, or SuperServer mode. How can I check in which of these modes an installed database is running?
There's no API that exposes this. But because you're on a server, you can check what process is running.
I.e. on Windows and Firebird 2.5:
fb_inet_server.exe
= very likely SuperClassicfb_inet_server.exe
= very likely Classicfbserver.exe
= very likely SuperServer