> The problem was with the sintax of the url, because it is diferent to
> the url in JBoss.

If you mean the "database" property, then you are right - they are
different. The JDBC URL is "jdbc:firebirdsql:" + getDatabase()

This means that both URLs

jdbc:firebirdsql:localhost/3050:/home/user/db.fdb
jdbc:firebirdsql://localhost:3050/home/user/db.fdb

Roman