On Unix and Linux, the database system uses the special operating system group <sdba_group>. The system default for the name of <sdba_group> is sdba.
The following database resources have the operating system group ID (GID) of <sdba_group>:
Files and directories of the database software (for example, the user profile container)
Database processes and global listener/X server processes
For more information, see Concepts of the Database System, Processes.
Volumes, if there is no support group for the database
Operating system users who perform administration tasks for the database system belong to the <sdba_group> operating system group. These operating system users can perform the following actions, among others:
Creating new databases
Accessing the directories <global_data_path>/wrk and <private_data_path> and their subdirectories
Accessing the XCONS database tool
Accessing volumes, if there is no support group for the database
<sdba_group> is also the primary group for the special operating system user <sdb_user>.