Reinstall OAAM

delete the servers and cluster from weblogic console
delete the actual folders

/u01/oracle/config/domains/IAMAccessDomain/servers/wls_oaam1.bkp
/u01/oracle/config/domains/IAMAccessDomain/servers/wls_oaam_admin1.bkp

edit the domain file:

/u01/oracle/config/domains/IAMAccessDomain/init-info/domain-info.xml.bkp

/u01/oracle/config/domains/IAMAccessDomain/init-info/config-groups.xml.bkp