The WLS_HOME environment variable must be setup. It should be set to the server directory of the WebLogic Server installation (e.g. /opt/wls/wlserver_10.3/server).
On Solaris the preference order of security providers in $JAVA_HOME/jre/lib/security/java.security must be changed. Provider sun.security.pkcs11.SunPKCS11 ${java.home}/lib/security/sunpkcs11-solaris.cfg must be moved from position 1 into the final position in the list of providers. This must be done to support secure web services.