Time Required: 20 minutes
Class Materials:
Next we will install the ASMLib drivers that simplify management of ASM on Linux.
ASMLib is an interface between block devices presented to Linux, and the Oracle ASM software that executes as the Oracle user.
Time Required: 20 minutes
Class Materials:
Next we need to create the Oracle user account, OS groups and mount point.
The Oracle software will be installed and owned by the oracle user account. In additional several OS groups are created that allow other non oracle OS users privileged access to the database and grid resources.
Time Required: 20 minutes
Class Materials:
Next we need to configure the Linux kernel to support Oracle 11gR2.
Before we can install Oracle 11gR2 on our new VM, we need configure the Linux kernel. The following steps modify key settings to allow Oracle to execute. These steps are taken from the Oracle install guide located at the following URL:
Time Required: 20 minutes
Class Materials:
Next we need to add additional RPMs to support the Oracle database and grid installs.
Before we can install Oracle 11gR2 on our new VM, we need to load additional RPM packages that are required by the Oracle database and grid. Oracle publishes a list of the required VMs broken down by the supported Linux distributions at the following URL:
Time Required: 60 minutes
Class Materials:
To create our Oracle RAC database on VMware Workstation 8, we first need to create a Linux VM.
In this example I have the Red Hat Enterprise Linux 5.5 64-bit install software as an ISO image of the DVD install media. Having a single ISO image allows VMware to use its Easy Install feature that pretty much automates the OS install entire process.
It has long been an ambition of mine to have my very own RAC cluster database.
My former TUSC colleague and good friend John Smiley over at Amazon.com created a white paper some years back where he showed how to create a two node RAC cluster out of a couple of spare x86 Linux boxes and as I recall, some scotch tape, glue and pixie dust. It really was very cool and definitely worth a Blue Peter badge.
Once a new physical disk is added to a Linux host, it needs to be presented to the OS.
This is a five step process:
When new SCSI devices are added to a Linux system, it is necessary to re-scan the SCSI bus so that the OS can add them to the device list:
[root@localhost ~]# ls /dev/sd* /dev/sda /dev/sda1 /dev/sda2 /dev/sda3 [root@localhost ~]# su -c 'for hst in $(ls /sys/class/scsi_host) ; do echo "- - -" > /sys/class/scsi_host/$hst/scan ; done' [root@localhost ~]# ls /dev/sd* /dev/sda /dev/sda1 /dev/sda2 /dev/sda3 /dev/sdb [root@localhost ~]#
the gruffdba 