id -p
uid=101(oracle) gid=100(oinstall) projid=101(user.oracle)
prctl -n project.max-shm-memory -i project user.oracle
prctl -n project.max-shm-memory -v 6gb -r -i project user.oracle
projmod -sK "project.max-shm-memory=(privileged,6G,deny)" user.oracle