Subject Re: [Firebird-Java] error when connect to fb using squirrel (java based SQL client)
Author Federico Tello Gentile
Check that the server is running

Here's a working url on windows

On Unix/Linux
See there's a double '/' here ---^

Check that /var/db has owner or group rwx permission for firebird user.
easyly done with
sudo chown firebird:firebird /var/db
sudo chown firebird:firebird /var/db/*.fdb

Good luck.