9.4 About Default File Permissions Set by Oracle Universal Installer
Oracle Grid Infrastructure is installed in the ORACLE_HOME directory, by default. Oracle Universal Installer sets the permissions for this directory, and for all files and directories under this directory.
               
For the ORACLE_HOME of Oracle Grid Infrastructure, the following permissions are granted:
               
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                     Full control - Administrators, SYSTEM,ORA_GRID_LISTENERS, Oracle Installation User, Oracle Home User
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                     Read, Execute, and List Contents - Authenticated Users