User`s guide

Oracle Database Preinstallation Requirements
Oracle Database Installation and Deinstallation 3-9
3.3.3.4 Checking Loopback Address
Check if the file $TSOS.SYSDAT.BCAM.ETC.HOSTS contains an entry for the loopback
address. For example:
127.0.0.1 localhost loopback # local address
3.3.3.5 Checking the Configuration Files in the POSIX File System
Check the network configuration files /etc/hosts and /etc/resolv.conf . These files
must have the same contents as the corresponding files in the BS2000 administrator
user ID TSOS. If there are any mismatches, then ask your BS2000 system administrator
to synchronize the files.
3.3.4 Creating Required Operating System Users and Groups
If this is the first time Oracle software is installed on your system and depending on
the installation of the Oracle Management Agent, you may have to create several
BS2000 user IDs, POSIX users and groups. The BS2000 user ID for the Oracle Database
11g Release 2 software is called the installation user ID and the user ID where an
Oracle database is stored is called the DBA user ID.
■ Creating the BS2000 Installation User ID
■ Creating the POSIX System Group
■ Initializing the POSIX User
■ Creating Users and Groups for Oracle Databases
3.3.4.1 Creating the BS2000 Installation User ID
The BS2000 System Administrator must create a user ID under which you want the
Oracle Database 11g Release 2 software to reside. This user ID is called the Oracle
installation user ID or Oracle software owner. Throughout this guide, we refer to this
user ID as
ORAC1120 . This user ID does not require any special BS2000 privileges.
When the BS2000 system administrator creates the installation user ID with the
following command, the corresponding POSIX user is also created. The POSIX user
attributes, namely, user number, group number, login directory and program, are
assigned default values.
/ADD-USER ORAC1120,…
3.3.4.2 Creating the POSIX System Group
For installation under POSIX, the POSIX administrator or BS2000 System
Administrator must create system groups in POSIX. As distinguished from other
UNIX systems, the installation user ID (Oracle software owner) and the DBA user ID
of an Oracle database are not identical. Therefore, the POSIX installation uses only one
group, such as
oracle , for Oracle software owner and Oracle database. This group is
called Oracle installation group.
■ If this is not the first Oracle Database installation under POSIX, then you can
determine the group name by using the following POSIX command:
$ more /var/opt/oracle/oraInst.loc
If the oraInst.loc file exists, then the output from this command is similar to the
following:
inventory_loc=/u01/app/oraInventory
inst_group=oracle