Blog

In this article, We will create an Oracle database home owner (oracle) and Oracle Grid Infrastructure home owner (grid). After that, we will perform user and group setup for Oracle RAC.

1. Create Groups:

Create the below groups as a root user:

groupadd -g 1001 oinstall
groupadd -g 1002 dba
groupadd -g 1003 asmadmin
groupadd -g 1004 asmdba
groupadd -g 1005 asmoper
groupadd -g 1006 oper

2. Create Users:

Create Oracle & grid users and assign the created groups:

useradd -u 2001 -g oinstall -G asmdba,asmadmin,asmoper,dba grid
useradd -u 2002 -g oinstall -G asmdba,dba,oper oracle

3. Add users to vboxsf group:

If you have created the shared folder in Oracle VirtualBox then add Oracle and grid accounts to vboxsf group. The vboxsf group was created by VirtualBox Guest Additions and it allows its members to access the folders in the hosting machine. If you did not install VirtualBox Guest Additions in your virtual machine then follow the article Install VirtualBox Guest Additions.

usermod -a -G vboxsf oracle
usermod -a -G vboxsf grid

4. Change the User password:

[root@localhost ~]# passwd grid
Changing password for user grid.
New password:grid123
BAD PASSWORD: The password contains the user name in some form
Retype new password:grid123
passwd: all authentication tokens updated successfully.

[root@localhost ~]# passwd oracle
Changing password for user oracle.
New password:oracle123
BAD PASSWORD: The password contains the user name in some form
Retype new password:oracle123
passwd: all authentication tokens updated successfully.
[root@localhost ~]#

5. Verify Users and Groups:

[root@localhost ~]# id oracle
uid=2002(oracle) gid=1001(oinstall) groups=1001(oinstall),1002(dba),1004(asmdba),1006(oper)


[root@localhost ~]# id grid
uid=2001(grid) gid=1001(oinstall) groups=1001(oinstall),1002(dba),1003(asmadmin),1004(asmdba),1005(asmoper)

[root@localhost ~]# ls -ld /home/oracle
drwx------. 3 oracle oinstall 78 Mar  5 05:00 /home/oracle

[root@localhost ~]# ls -ld /home/grid
drwx------. 3 grid oinstall 78 Mar  5 05:00 /home/grid

[root@localhost ~]# grep oracle /etc/passwd
oracle:x:2002:1001::/home/oracle:/bin/bash

[root@localhost ~]# grep grid /etc/passwd
grid:x:2001:1001::/home/grid:/bin/bash

6. Create the directories for Oracle RAC:

We have to create the below directories for Oracle RAC:

ORACLE BASE:/u01/app/oracle
ORACLE HOME:/u01/app/oracle/product/19.3.0/dbhome_1
GRID BASE:/u01/app/grid
GRID HOME:/u01/app/19.3.0/grid
INVENTORY:/u01/app/oraInventory

mkdir -p /u01/app/oracle /u01/app/oraInventory /u01/app/grid /u01/app/19.3.0/grid /u01/app/oracle/product/19.3.0/dbhome_1

7. Change the ownership and permissions:

chown -R grid:oinstall /u01/app/grid /u01/app/19.3.0/grid /u01/app/oraInventory
chown -R oracle:oinstall /u01/app/oracle /u01/app/oracle/product/19.3.0/dbhome_1

chmod -R 775 /u01/app/grid /u01/app/19.3.0/grid /u01/app/oraInventory /u01/app/oracle /u01/app/oracle/product/19.3.0/dbhome_1

8. Verify the Ownership and permissions:

ls -ld /u01/app/grid /u01/app/19.3.0/grid /u01/app/oraInventory /u01/app/oracle /u01/app/oracle/product/19.3.0/dbhome_1

drwxrwxr-x 2 grid   oinstall  6 Feb 16 16:22 /u01/app/19.3.0/grid
drwxrwxr-x 2 grid   oinstall  6 Feb 16 16:22 /u01/app/grid
drwxrwxr-x 3 oracle oinstall 21 Feb 16 16:22 /u01/app/oracle
drwxrwxr-x 2 oracle oinstall  6 Feb 16 16:22 /u01/app/oracle/product/19.3.0/dbhome_1
drwxrwxr-x 2 grid   oinstall  6 Feb 16 16:22 /u01/app/oraInventory

User and group setup for Oracle RAC is completed now. Also, we have created the directories for Oracle RAC.