How to - Connect LUNs From EMC Storage HostAgent to Linux Server

EMC VNX Series is the huge storage to work with, High-performing unified storage with unsurpassed simplicity and efficiency, optimized for virtual applications. With the VNX Series, you’ll achieve new levels of performance, protection, compliance, and ease of management. In this writeup I am going to share an experience of working with EMC VNX 5700 and IBM Server for Database and I have created some luns for my database and now I want those luns in my DB server so that I can start my database and grid installation on that luns. There is a thing named "HOST AGENT" which is required to complete the process it is an rpm package for RHEL linux 64 bit, I have this package coz I was using the same database servers, so lets start the process.

How to Add ISCSI Storage Under Linux

Adding Iscsi Storage under Linux is always the problem for everyone, everyone try do this via different way and every time some thing goes wrong !! and in answer no storage showing in linux, it was always painful for everyone so my this writeup is for all those guys they want a simple steps for adding ISCSI storage under linux.So lets start with package 

How To Check the Hardware Info Linux Vs Solaris

Mostly people think Linux and Solaris are same languages while similar in many respect there are still quite few differences between and Linux and Solaris Machine including commands, file system and heritage. This differences can be as simple as renamed configuration file to the more complicated alternate meaning of command line Ethernet.Mostly people face problem in getting hardware information in Solaris, in linux there is only a
prtdiag -v command 

Linux Installation

Installing Linux>Boot from RHEL4 disc1
>press enter for graphical install
** Need at least 512MB RAM / 2.5GB Space **
>Manually partition your hard drive with Disk Druid
/tmp = 512MB ext3 fixed size
/boot = 128MB ext3 fixed size
Swap = 1024MB fixed size
/ = fill to maximum allowable size


Click here To Go Next

Oracle Installation in Linux

After Linux Installation, I have installed Oracle10g 2 in Linux machine. I followed steps given at below link.
http://www.oracle.com/technology/pub/articles/smiley_10gdb_install.html
http://www.oracle.com/technetwork/articles/smiley-10gdb-install-092939.html
Check "Part II: Configuring Linux for Oracle"


Now Steps to Create auto startup of the database with linux startup.

Automating Oracle DB startup in Linux

I am writing steps that will auto start Oracle Database along with linux OS startup.

1. connect with Oracle user and edit the "/etc/oratab" file setting flag to 'Y'. soni:/home/oracle/oracle/product/10.2.0/db_1:Y
2. connect wih root user- created empty file (/etc/init.d/dbora) and write:

3. chmod 750 /etc/init.d/dbora
4. chkconfig --add dbora
5 check whether dbora is working or not.. as root issue /etc/init.d/dbora start
# /etc/init.d/dbora start
Failed to auto-start Oracle Net Listene using /ade/vikrkuma_new/oracle/bin/tnslsnr
Processing Database instance "soni": log file /home/oracle/oracle/product/10.2.0/db_1/startup.log

We got any error in listner settings... This is due to a hard coded path in the dbstart script. To correct this, connect with Oracle user, edit the "$ORACLE_HOME/bin/dbstart" script and replace the following line (approximately line 78): ORACLE_HOME_LISTNER=/ade/vikrkuma_new/oracle withORACLE_HOME_LISTNER=$ORACLE_HOME and then check
# /etc/init.d/dbora start
Processing Database instance "soni": log file /home/oracle/oracle/product/10.2.0/db_1/startup.log
---------------
Congratz you are DONE 

Step By Step Instructions on Installing Oracle 10g R2 32-bit

Pre-Installation Task

  NOTE: Installing Oracle 10g on RedHat EL4 works matching way as that of on Cent OS 4.
             Installing Oracle 10g on RedHat EL3 works matching way as that of on Cent OS 3.

Installation Of Grid Structure For Linux

Install the Grid Infrastructure

Make sure both virtual machines are started, then login to "ol6-112-rac1" as the oracle user and start the Oracle installer.

$ cd /host/software/oracle/11gR2/11.2.0.3.0/linux64_grid

$ ./runInstaller

Select the "Skip software updates" option, then click the "Next" button.

Easy Step By Step installation Of RAC On Linux

Oracle Linux 6 installation as you would for a basic server. A general pictorial guide to the installation can be found here. More specifically, it should be a server installation with a minimum of 4G+ swap, firewall and SELinux disabled and the following package groups installed:

• Base System > Base
• Base System > Client management tools
• Base System > Compatibility libraries
• Base System > Hardware monitoring utilities
• Base System > Large Systems Performance
• Base System > Network file system client
• Base System > Performance Tools

Oracle Database 11g Release 2 (11.2.0.3.0) RAC On Oracle Linux 6.1 Using VirtualBox

Introduction

One of the large-scale obstacles stopping persons from setting up check RAC environments is the obligation for distributed storage. In a output natural environment, distributed storage is often supplied by a SAN or high-end NAS apparatus, but both of these choices are very costly when all you desire to manage is get some know-how establishing and utilising RAC. A lower alternate is to use a FireWire computer disk enclosure to permit two appliances to get access to the identical disk(s), but that still charges cash and needs two servers. A third choice is to use virtualization to phony the distributed storage.
Using VirtualBox you can run multiple Virtual Machines (VMs) on a lone server, permitting you to run both RAC nodes on a lone machine. In additon, it permits you to set up distributed virtual computer disks, overwhelming the obstacle of costly distributed storage.
Before you launch into this setting up, here are a couple of things to consider.