Oracle Sandbox

Patrick Gates and Peter Schroeder

How to Build a Personal DBA Lab to Keep Up with Ever Changing Demands

2/11/2014 2www.datavail.com

Our Virtual Box End State Configuration Oracle Base machine

• DV_BASE_OEL_6.3

DNS server• DV_DNS

11g single instance with ASM• DV_130_11G

2 node RAC • DV_RAC1• DV_RAC2

12c OEM Cloud Control• DV_EM12C

What is Virtual Box?• VirtualBox is a general-purpose full virtualizer for x86 hardware,

targeted at server, desktop and embedded use.

• Presently, VirtualBox runs on Windows, Linux, Macintosh, and Solaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, Windows 7), DOS/Windows 3.x, Linux (2.4 and 2.6), Solaris and OpenSolaris, OS/2, and OpenBSD.

• Download Virtual Box at www.virtualbox.org

Why we used VirtualBox• It’s Free!!• Supports Multiple Operating Systems• Ability to setup host only networking• Testing becomes easier with features like immutable disks and

snapshots• Can share disks between severs

• i.e. RAC installations• Allows us to setup and perform functionality testing quickly

• Standbys• Guaranteed Restore points• Basic RMAN recoveries• RMAN duplicates or clones• 10g to 11gR2 upgrades

How we did it

We did not reinvent the wheel building this lab

We used lots of good blogs and sites to build what is effective for us• Installing OEL

• http://www.oracle-base.com/articles/linux/oracle-linux-6-installation.php• Setting up a DNS Server

• http://www.oracle-base.com/articles/linux/dns-configuration-for-scan.php• Installing 11gR2 RAC

• http

://www.oracle-base.com/articles/11g/oracle-db-11gr2-rac-installation-on-oracle-linux-6-using-

virtualbox.php• How to reconfigure oralce OHAS when the hostname is changed

• http

://www.dbaglobe.com/2011/05/summarize-of-how-to-change-hostname-

in.html

How we did it - Continued• Enables you to get deeper understanding of how things actually work

• Can try different configurations within the OS and database• OS

• Install the OS, Change OS parameters, set kernel values• Create all the users and groups necessary for an Oracle install• Oracleasm configure• Oracleasm createdisk• Setup SCAN IP addresses

• Database• Flashback Database• Fast Start Failover• Active Dataguard

Setup a BASE machine

• Build everything into base machine so you don’t have redo it every time

• Use NAT not bridged for networking• You can share you machine with a coworker with out

having IP conflicts• Setup VirtualBox Host Only networking• What is in the BASE machine

• OEL OS 6.3• Root user• Oracle user• ASMLIB

Cloning the BASE machine

Why clone the BASE machine?• OS is already loaded• Oracle OS user is created• You will not fail 11g prerequisite checks• Consistency• Takes about 2 to 3 minutes to clone

Potential Gotchas• You need to make sure you always check “Reinitalize the

MAC addresses for all network cards” on the screen when you are cloning the base machine.

Clone Base machine for a DNS server

Why create a DNS Server?• Mimics a production environment• No need to update the /etc/hosts file on all virtual servers• You can setup a round robin SCAN IP for 11gR2 RAC

installs

Clone from base machine for 11g Single Instance with ASMMain highlights

• Setup ASM disks in virtual box and server• Create in vbox• Fdisk steps• Oracleasm configure, createdisk• Changing network• Changing hostname

• http://www.dbaglobe.com/2011/05/summarize-of-how-to-change-hostname-in.html

Clone from base machine for the first node of a two Node 11gR2 RAC installMain highlights

• Setup DNS entries for hostnames, SCANs, public IPs, private IPs and VIPs

• Show how pinging the SCANs will round round through IPs from DNS server

• Setup shared disks for RAC• Reconfirm how network is setup on VirtualBox

Potential Gotchas• Disable NTP• Setup of network interface types from grid infrastructure install• install the cvuqdisk rpm from GI install media

Clone from base machine for the second node of a two Node 11gR2 RAC install

Main highlights• Finish configuration for shared disks with VirtualBox

Potential Gotchas• Disable NTP• Setup of network interface types from grid infrastructure install• install the cvuqdisk rpm from GI install media

Installing Grid Infrastructure on DV-RAC1 and DV-RAC2

Potential Gotchas• Disable NTP• Setup of network interface types from grid infrastructure

install• resolv.conf bug, ignore check on install

vi /etc/udev/permissions.d/50-udev.permissions

add these lines to the file and save

oracleasm/disks/CRS01:0660

oracleasm/disks/DATA01:0660

oracleasm/disks/DATA02:0660

Fix for Device Checks for ASM bug

if [ -e /usr/bin/nslookup.orig ]; then

echo "ERROR: /usr/bin/nslookup.orig already exist"

exit 1

mv /usr/bin/nslookup /usr/bin/nslookup.orig

echo '#!/bin/bash

/usr/bin/nslookup.orig $*

exit 0' > /usr/bin/nslookup

chmod a+x /usr/bin/nslookup

Fix for resolv.conf bug

Clone from DV-130 (11g DB machine) to install 12c OEM Cloud ControlMain highlights

• Cloned from an existing machine that had an 11g database because that is required for the OEM 12c install

• How we used used Google as mail relay• Demonstrate 12c Grid monitoring targets

Potential Gotchas• Hostname has to be changed• IP has to be changed• OHAS service has to be reconfigured• Specific database parameters required • Used this link as a guide for the steps above

• http://www.dbaglobe.com/2011/05/summarize-of-how-to-change-hostname-in.html

Questions?

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