svanderclock wrote:

> in firebird classic, how to know from one client the number of connection to the database ?

If you use 2.1 you can query the monitoring tables. Beside what is
written here:

http://www.firebirdfaq.org/faq10

if you use earlier versions, you can look at the number of
fb_inet_processes running. On Linux, you can also use commands fuser and
lsof to see which process is connected to which database file.

So, maybe you should tell us more:

Which operating system you use?
Which version of Firebird?

--
Milan Babuskov
http://www.flamerobin.org
http://www.guacosoft.com