A resource packaged in a RAR file fails to call a native library packaged in the same RAR.

Create a JCA resource adapter with a connection implementation, which contains a native method. Package the native library, which implements the method in the same RAR as the resource adapter, making sure that the native library matches your current platform. Upon deployment, the native library will be extracted and loaded into WildFly's process space. However, first call to the native method in the RA connection will throw UnsatisfiedLinkError, because the classloader, which is used to load RA classes is different from the classloader, which holds the reference to the loaded native library. The easiest way to test this is to build the native connector example from the IronJacamar project located here: http://www.ironjacamar.org/doc/userguide/1.1/en-US/html_single/index.html#sample_helloworld_native and attempt to invoke it from a Java EE application.