> Can you tell me how2 make "firebird embedded engine" with JBOSS ?

Change the JDBC URL from jdbc:firebirdsql:localhost:/opt/... to
jdbc:firebirdsql:embedded:/opt/..., ensure that libjaybird.so is in the
$PATH (or, more correctly in java.library.path) and that libfbembed.so is
installed (comes with ClassicServer, not sure about SuperServer).

Roman