Trying to create Advanced Enumeration using a external jar connecting to oracle

I am new to BRMS need to configure ENUMERATION through external jar connecting Oracle Database through the same jar and issue is that the enumeration screen is giving me error for access denied ("java.net.SocketPermission" "172.16.244.5:1521" "connect,resolve

I have also attached my standalone.xml file in which i have configured database .

I have also modified hibernate.dialect in persistence.xml

I am able to connect to data base through Extensions > Data Sets >
it is working fine .

So can i use Data Sets in Guided Decesion Table ?????
Please Help ASAP!!!!!!!!!!!!!!!!!!