I have the following configuration:

JBoss 5.1.0.GA using "all" configuration
Jaybird 2.1.6 JDK6
Java 1.6.0_20 64 bit

I'm trying to migrate my application from JBoss 4.2.3 to 5.1.0

Now I'm stuck on this that Jaybird can't open connection to firebird server.
Same Data source configurations work perfectly on JBoss 4.2.3 but on 5.1.0 I get this error:

org.firebirdsql.gds.GDSException: Your user name and password are not defined.
Ask your database administrator to set up
a Firebird login.
at
org.firebirdsql.gds.impl.wire.AbstractJavaGDSImpl.readStatusVector(AbstractJavaG\
DSImpl.java:2169)

I use same data source definition files to configure my datasource and I have no
idea what could be the problem.

Any ideas?