4.1:
# groupadd oinstall
# groupadd asmadmin
# groupadd asmdba
# groupadd asmoper
# groupadd dba
# groupadd oper

#useradd -g oinstall ?G asmadmin,asmdba,asmoper grid
#useradd -g oinstall -G dba, oper, asmdba oracle

# passwd oracle    ---------------oracle
# passwd grid     ----------------grid

4.2:
# mkdir  -p  /u01/app/grid/11.2.0/
# mkdir  -p  /u01/app/grid/product/11.2.0/crs_1/
# chown  -R   grid:oinstall   /u01/app/grid/11.2.0/
# chown  -R   grid:oinstall   /u01/app/grid/product/11.2.0/crs_1/
# chmod  -R   775    /u01/app/grid/11.2.0/
# chmod  -R   775    /u01/app/grid/product/11.2.0/crs_1/

# mkdir  -p   /u01/app/oracle/product/11.2.0/dbhome_1/
# chown  -R   oracle:oinstall    /u01/app/oracle/product/11.2.0/dbhome_1/
# chmod  -R   775   /u01/app/oracle/