1. Installation Guide
  2. Configuring Users, Groups and Environments for Oracle Grid Infrastructure and Oracle Database
  3. Creating Operating System Privileges Groups
  4. Creating the OSKMDBA Group for Database Installations

Creating the OSKMDBA Group for Database Installations

You must designate a group as the OSKMDBA group during installation. Members of this group are granted the SYSKM privileges to perform Transparent Data Encryption keystore operations.

If you want a separate group for Transparent Data Encryption, then create the OSKMDBA group using the groups name kmdba unless a group with that name already exists: 
# /usr/sbin/groupadd -g 54326 kmdba