If u are using Eclipse with Jboss 6.1.0 disturbution .it will shown error
Exception in thread "main" java.lang.UnsatisfiedLinkError: no ocijdbc11 in java.
library.path
Solution :
copy ocijdbc11.dll from oracle\product\11.2.0\client_1\BIN and paste in to
D:\jboss-6.1.0.Final\bin\native