RAC creating directory structure and owners

To create the directories on the local file system.

Assuming you have a "grid" user for Grid infrastructure maintenance.

1. Log in as the root user on each node.
2. Create the directories and set the ownership and permissions:
   For Oracle RAC 10g Release 2/Oracle RAC 11g Release 1:

   # mkdir -p /u01/app/oracle
   # mkdir -p /u01/app/oracle/product/10.2.0/crshome
   # mkdir -p /u01/app/oracle/product/10.2.0/dbhome_1
   # chown -R oracle:oinstall /u01/app
   # chmod -R 775 /u01/app

   
   
   
   
   
   For Oracle RAC 11g Release 2:

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