Glassfish V4 Postgresql JDBC connection pool creation failure

Hi all,

I tried to create a JDBC connection pool within the Glassfish V4 server for the Postgresql database
with the driver "postgresql-9.3-1101.jdbc41.jar" (alternatively with postgresql-9.2-1002.jdbc4.jar").
I put the driver *.jar-file into the domain1/lib/ and alternatively into the domain1/lib/databases/ directories
and started the Glassfish server.
I created the connection pool and made a ping to the database. This failed.
I have enclosed you the screenshot about the failure and the connection pool settings.
What is wrong? Do I miss any PATH or CLASSPATH settings or?

Thank's a lot for your support.

Greetings JK