... If you have license file and installer files . Before you need install system Oracle Linux Release 5 Update 9 for x86_64 or CentOS 5.9 x86_64 . You can install ProMAX 5000.0.3 also under 6.4 Oracle or CentOS ( needs some additional steps ) Run under root sh promax5000.0.3.0.sh First you need check that your license works : /OpenWorks/ProMAX/linux64/bin/flexlm/lmgrd -c /etc/license.dat -l /home/user/lmgrd.log run ps -ef and check that now you have 2 new lines : /OpenWorks/ProMAX/linux64/bin/flexlm/lmgrd -c /etc/license.dat -l /home/user/lmgrd.log licsrv -T yourhostname ... Then the next steps are more easy ...