Description of problem:
Warnings at server startup:
WARN [org.jboss.jca.core.connectionmanager.pool.strategy.PoolBySubject] [] (JCA PoolFiller) IJ000610: Unable to fill pool: javax.resource.ResourceException: Could not create connection

Root cause of the exception is displayed in the logs:
[Root exception is java.lang.ClassNotFoundException: com.sun.jndi.ldap.LdapCtxFactory from [Module "org.jboss.ironjacamar.impl:

Steps to Reproduce:
1. Create Oracle XA datasources with url set to ldap.
2. set "prefill" option to true
3. Start JBoss

Warnings gets disappear when dependency <module name="sun.jdk"/>
is added in the module
"org.jboss.ironjacamar.impl"

Expected results:
There should not be any need to add the dependency manually. This dependency should be by default present in JBoss EAP.