Hi,

I will explain How to Create and Configure Oracle ASM Disk on Linux Using OracleASM ASMLib Utility.

 

 

Configure Oracle ASM Disk

Before this article,  read the following article to add Disk on VirtualBox.

How to Add Hard disk in VirtualBox and Disk format and Mount Steps on Linux

 

 

Create and Configure Oracle ASM Disk on Linux

In the above article, /dev/sdc disk is partitionned into 2 parts and mounted the first one as /dev/sdc1 /u01.

Now prepare /dev/sdc2 partition as Oracle ASM Disk.

 

 

OracleASM ASMLib Utility

ASMLib software is used to format or configure any disk on Linux as an ASM disk. The ASMLib software consists of the following 3 components.

• Open source (GPL) core module package: kmod-oracleasm
• Open source (GPL) utilities package: oracleasm-support
• Closed-source library package: oracleasmlib

 

download and install them with the following yum packages.

Firstly yum install oracleasm like following.

 

[root@MehmetSalih ~]# yum install oracleasm
Loaded plugins: langpacks, ulninfo
Resolving Dependencies
--> Running transaction check
---> Package kernel-uek.x86_64 0:4.14.35-1844.2.5.el7uek will be installed
--> Finished Dependency Resolution
Dependencies Resolved
==========================================================================================================================================================
Package Arch Version Repository Size
==========================================================================================================================================================
Installing:
kernel-uek x86_64 4.14.35-1844.2.5.el7uek ol7_UEKR5 52 M
Transaction Summary
==========================================================================================================================================================
Install 1 Package
Total download size: 52 M
Installed size: 59 M
Is this ok [y/d/N]: y
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
kernel-uek-4.14.35-1844.2.5.el7uek.x86_64.rpm | 52 MB 00:00:13
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : kernel-uek-4.14.35-1844.2.5.el7uek.x86_64 1/1
Verifying : kernel-uek-4.14.35-1844.2.5.el7uek.x86_64 1/1
Installed:
kernel-uek.x86_64 0:4.14.35-1844.2.5.el7uek
Complete!
[root@MehmetSalih ~]#

 

 

And then you should install related yum packages like following.

 

[root@MehmetSalih ~]# yum install oracleasm-support.x86_64
[root@MehmetSalih ~]# yum install kmod-oracleasm

 

 

 

After Oracle ASM lib packages are installed you need to configure like following.

[root@MehmetSalih ~]# oracleasm configure -i
Configuring the Oracle ASM library driver.
This will configure the on-boot properties of the Oracle ASM library
driver. The following questions will determine whether the driver is
loaded on boot and what permissions it will have. The current values
will be shown in brackets ('[]'). Hitting <ENTER> without typing an
answer will keep that current value. Ctrl-C will abort.

Default user to own the driver interface []: oracle
Default group to own the driver interface []: oinstall
Start Oracle ASM library driver on boot (y/n) [n]: y
Scan for Oracle ASM disks on boot (y/n) [y]: y
Writing Oracle ASM library driver configuration: done

Check Oracle ASM status like following.

[root@MehmetSalih ~]# oracleasm status
Checking if ASM is loaded: no
Checking if /dev/oracleasm is mounted: no
[root@MehmetSalih ~]#
[root@MehmetSalih ~]#

 

İnitialize oracleasm like following

[root@MehmetSalih ~]# oracleasm init
Creating /dev/oracleasm mount point: /dev/oracleasm
Loading module "oracleasm": oracleasm
Configuring "oracleasm" to use device physical block size
Mounting ASMlib driver filesystem: /dev/oracleasm
[root@MehmetSalih ~]#

 

After seeing Oracleasm software works correctly, the disk is created as follows.

[root@MehmetSalih ~]# oracleasm createdisk DATA /dev/sdc2
Writing disk header: done
Instantiating disk: done
[root@MehmetSalih ~]#

 

 

And we can list oracle asmdisk like following.

[root@MehmetSalih ~]# oracleasm listdisks
DATA
[root@MehmetSalih ~]#

 

Now Oracle ASM Disk ( DATA ) is created, you can use it during Automatic Storage Management Installation.

 

Do you want to learn Oracle Database for Beginners, then read the following articles.

Oracle Tutorial | Oracle Database Tutorials for Beginners ( Junior Oracle DBA )