Different OS user account details

User Description
OPC The system administrator account you use to connect to the compute node using SSH. This user can use the sudo command to perform operations that require root-user access.
ORACLE The Oracle Database administrator account you use to access the system and perform non-root database administration tasks. A home directory, /home/oracle, is created for this user. This user cannot use the sudo command to perform operations that require root-user access. Additionally, by default you cannot connect as this user to the compute node using SSH. You can add the

public key to the user’s $HOME/.ssh/authorized_keys file to grant persistent SSH access, or you can connect as the opc user and then use the sudo -s command to start a root-user command shell, followed by an su – oracle command to switch to the oracle user.

Grid The Oracle Grid Infrastructure administrator account you use to perform ASM, ACFS, and clusterware administration tasks. A home directory, /home/grid, is created for this user. This user cannot use the sudo command to perform operations that require root-user access. Additionally, by default you cannot connect as this user to the compute node using SSH. You can add the public

key to the user’s $HOME/.ssh/authorized_keys file to grant persistent SSH access, or you can connect as the opc user and then use the sudo -s command to start a root-user command shell, followed by an su – grid command to switch to the grid user.

root The root administrator for the system. You do not have direct access to this account. To perform operations that require root-user access, use the sudo command as the opc user.

Leave a Reply

Your email address will not be published. Required fields are marked *