Documentation of Kerberos authentication for EJB Client (BZ#1140458) must contain a note that correct working of Kerberos authentication for EJB Client with OracleJDK 1.6 is possible only if users provide minimal JAAS config and reference it via java.security.auth.login.config property.

Content of minimal JAAS config file can be following:

com.sun.security.jgss.initiate {
  com.sun.security.auth.module.Krb5LoginModule required useTicketCache=true doNotPrompt=true;
};

Original issue was reported in BZ#1179710.