In the install guide part "1.12. Preparing Oracle WebLogic" is bad path for the start up script. In the documentation is:
To use the Sun/Oracle Java SAAJ implementation, edit the WebLogic start up script for the domain where OpenAM runs, such as /path/to/weblogic/user_projects/domains/wlsdomain/bin/startWebLogic.sh. Change the following line:
Without bin, because there is startWebLogic.sh as well, but the content of the script is different and then it is not true what is described bellow.