http://docs.oracle.com/cd/E19044-01/sol.containers/817-1592/rmtaskproj.task-10/index.html
projadd -c “Oracle Default Project” group.dba
In order to make Oracle to use this project by default you need to modiy the file /etc/user_attr file. Add the following line to /etc/user_attr
oracle::::project=group.dba
Oracle will now use this project group by default.
To modify the value of max-shm-memory to 6 GB:
# prctl -n project.max-shm-memory -v 6gb -r -i project group.dba
http://oraclehack.blogspot.com/2007/08/installing-10g-on-solaris-10.html
projmod -sK “project.max-shm-memory=(privileged,10G,deny)” group.dba