Presentation Template - NCOAUG Conference Presentation - 16 9

ASTCORPORATION

RECOGNIZED.SPECIALIZED. PREFERRED.

RACThinking Outside The Virtual BoxMohamed Sadek AST CorporationMarch 12, 2015

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Introduction• Few Things to Consider

Download Software Virtual Box Installation & Setup Operating System Installation

• Preparing Environmento Oracle Prerequisites

Network Setup Create Shared Disks Cloning Process Second Node First Installing Grid Infrastructure on Both Nodes Testing Grid Infrastructure – CRSCRTL command Finally Installing Database on Both Nodes Testing Grid Infrastructure – SRVCTL command Patching & Upgrading Database Check the status of RAC system Question’s and Answer’s

Introduction / Agenda

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One of the biggest obstacles preventing people from setting up RAC environments is the requirement for shared storage. In a production environment, shared storage is often provided by a SAN or high-end NAS device, but both of these options are very expensive.

Running today’s non-critical business applications in virtualized environments has shown to be efficient and cost saving. More sophisticated or highly available applications on the other hand were most likely incompatible with commonly used software based virtualization solutions.

Installing RAC system always was time consuming and hectic for a DBA, In a production environment average time for completion is 12 – 18 hours of continuous work and observation of the process.

Estimated time in out example in a Non-Production environment is 4 hours.

Introduction

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The combination of Oracle VBox and Oracle RAC enables a better server consolidation (RAC databases with underutilized CPU resources or peaky CPU utilization can often benefit from consolidation with other workloads using server virtualization) sub-capacity licensing, and rapid provisioning.

RAC on Ovbox also supports the creation of non-production virtual clusters on a single physical server for product demos, educational settings and test environments. This deployment combination permits dynamic changes to pre-configured database resources for agile responses to changing service level requirements common in consolidated environments.

Introduction

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The finished system includes the host operating system, two guest operating systems, two sets of Oracle Grid Infrastructure (Cluster ware + ASM) and two Database instances all on a single server. As you can imagine, this requires a significant amount of disk space, CPU and memory.

Following on from the last point, the VMs will each need at least 3G of RAM, preferably 4G if you don't want the VMs to swap like crazy. As you can see, 11gR2 RAC requires much more memory than 11gR1 RAC.

This procedure provides a bare bones installation to get the RAC working. There is no redundancy in the Grid Infrastructure installation or the ASM installation. To add this, simply create double the amount of shared disks and select the "Normal" redundancy option when it is offered. Of course, this will take more disk space.

Introduction – Few Things to Consider

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The Single Client Access Name (SCAN) should be defined in the DNS or GNS and round-robin between one of 3 addresses, which are on the same subnet as the public and virtual IPs. Prior to 11.2.0.2 it could be defined as a single IP address in the "/etc/hosts" file, which is wrong and will cause the cluster verification to fail.

The virtual machines can be limited to of swap, which causes a prerequisite check failure, but doesn't prevent the installation working. If you want to avoid this add 4+ Giga.

This article uses the 64-bit versions of Oracle Linux, Oracle 11g Release 2, Grid Infrastructure 11gR2.

Introduction – Few Things to Consider

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Introduction – Few Things to Consider

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Database 11gR2 11.2.0.3 Software www.oracle.com/technetwork/database/enterprise-edition/downloads / Database

Grid Infrastructure 11gR2www.oracle.com/technetwork/database/database-

technologies/clusterware/downloads / Grid Infrastructure Virtual Box

www.oracle.com/technetwork/server-storage/virtualbox/downloads linux 64-bit Linux 6.3 86x-64x bitedelivery.oracle.com/EPD

Software Download

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Now we must define the two virtual RAC nodes. We can save time by defining one VM, then cloning it when it is installed.

Virtual Box Installation & Setup

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Virtual Box Installation & Setup

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Virtual Box Installation & Setup

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Operating System Installation

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Preparing Environment• Oracle Prerequisites-Oracle recommend using oracle-rdbms-server-11gR2-preinstall RPM, it will install all the prerequisites required for oracle database and grid infrastructure.-Oracle recommend updating YUM for additional packages and security patches.-Patching & Upgrading DB 11.2.0.3 to 11.2.0.4, latest security patch also recommend after installation is complete.-We need to define Oracle user and Grid user in the same group.-We need create SAN storage , using Open filler(open source) but you can use Virtual Box media to create them depending on your need and requirement.

Operating System Installation

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If you are not using DNS, the "/etc/hosts" file must contain all the information necessary for both nodes and the san storage plus the public and private addresses.

Even with the SCAN address defined in the hosts file, it still needs to be defined on the DNS to round-robin between 3 addresses on the same subnet as the public IPS.

Network Setup

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Shutdown Node 1 for Preparing the shared disks. On the host server, create 4 sharable virtual disks and

associate them as virtual media using the following commands. You can pick a different location, but make sure they are outside the existing VM directory.

-VBoxManage createhd --filename asm1.vdi --size 5120 --format VDI --variant Fixed.

-VBoxManage storage attach rac1 --storagectl "SATA" --port 1 --device 0 --type hdd \

--medium asm1.vdi --mtype shareable. -VBoxManage modifyhd asm1.vdi --type shareable.

Creating Shared Disk

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Cloning Node 1 -Shutdown Node 1 Using command line -VBoxManage clonehd /u01/VirtualBox/rac1/rac1.vdi

/u03/VirtualBox/rac2/rac2.vdi. Attach the shared disks -VBoxManage storage attach rac2 --storagectl "SATA" --port 1 --

device 0 --type hdd \ --medium asm1.vdi --mtype shareable Changing the IP address for Node 2 and Host Name Ping Node 1 and Node 2 to check connectivity. Configure SSH connectivity between nodes using SSH utility that

comes with oracle Grid Infrastructure software. Run runcluvfy.sh utility for RAC verification recommended by Oracle.

Cloning Process Second Node

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Now ready for installing Grid:

First Installing Grid Infrastructure

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First Installing Grid Infrastructure

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Done

First Installing Grid Infrastructure

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Invoking the command CRSCTL : ./crsctl check cluster –all**************************************************************ol6-112-rac1:CRS-4537: Cluster Ready Services is onlineCRS-4529: Cluster Synchronization Services is onlineCRS-4533: Event Manager is online**************************************************************ol6-112-rac2:CRS-4537: Cluster Ready Services is onlineCRS-4529: Cluster Synchronization Services is onlineCRS-4533: Event Manager is online

Testing Grid Environment

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Now ready for installing RAC database

Finally Installing Database

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Finally Installing Database

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Done

Finally Installing Database

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Testing Grid Environment Invoking Command SRVCTL : - srvctl config database -d databaseDatabase unique name: RACDatabase name: RACOracle home: /u01/app/oracle/product/11.2.0.3/db_1Oracle user: oracleSpfile: +DATA/RAC/spfileRAC.oraDomain: localdomainStart options: openStop options: immediateDatabase role: PRIMARYManagement policy: AUTOMATICServer pools: RACDatabase instances: RAC2,RAC1Disk Groups: DATAType: RACDatabase is administrator managed

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Upgrading DB 11gR2 11.2.0.3 to 11.2.0.4 Patching 11.2.0.4 with the latest PSU

patches January 2015.

Patching & Upgrading Database

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Question & Answer

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