You must have an oracle user that is a member of a group named dba. If an oracle user does not exist on the Oracle VM Manager host, enter the following commands as the root user to create the user, create the group, add the user to the group, and set the user's password:

# groupadd dba
# useradd -g dba oracle

If the oracle user already exists, add it to the dba group using the following command:

# usermod -g dba oracle

The oracle user must also have a hard nofiles and soft nofiles minimum of at least 8192, as well as some other security limits set. To set these, edit the /etc/security/limits.conf file to include the following:

oracle       hard    nofile  8192
oracle       soft    nofile  8192
oracle       soft    nproc   4096
oracle       hard    nproc   4096
oracle       soft    core    unlimited
oracle       hard    core    unlimited

To configure the oracle user automatically, use the environment configuration script provided with the Oracle VM Manager installer. See Section 3.3.2.4, “Environment Configuration Script” for information on using this script.