About how to Install Oracle Enterprise Linux and configure Hardware settings for Oracle Database Installation please refer to the previous article.
1. Creating Required Operating System Groups and Users
This is the first time Oracle software is being installed on this system and we need to create several operating system groups and users. I prefer to allocate operating system user privileges so that to use one administrative user and one group for operating system authentication for all administrative privileges. I use the oracle user as the installation owner, oinstall group as oracle Inventory owner group and dba group as the primary group for any user requiring administrative privileges for Oracle Database administration. You can also create custom configuration groups and users based on job role separation. For more information please refer to the Oracle® Database Installation Guide 11g Release 2 (11.2) for Linux-> Creating Required Operating System Groups and Users.