Oracle cluster installation with grid and iscsi

ORACLE CLUSTER INSTALLATION WITH GRID & ISCSI HIGH AVAILABILITY-12C November 24, 2016
GRID RAC Page 1
ORACLE CLUSTER INSTALLTION WITH GRID & iSCSI HIGH
AVAILABILITY – 12C RAC

GRID RAC Page 2
SETTING UP PRE-REQUIREMENTS
Date:
date -s "9 AUG 2013 11:32:08"
SETTING UP EPEL REPOSITORY ON ALL THE SERVERS
yum install http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm -y
INSTALLING ORACLE ASMLIB PACKAGE ON BOTH NODES/RACS - (192.168.0.139 & 192.168.0.140)
cd /etc/yum.repos.d ; wget https://public-yum.oracle.com/public-yum-ol6.repo --no-check-certificate
wget http://public-yum.oracle.com/RPM-GPG-KEY-oracle-ol6 -O /etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
yum install kernel-uek-devel* kernel-devel oracleasm oracleasm-support elfutils-libelf-devel kmod-oracleasm
oracleasmlib tcpdump htop -y
yum install oracleasmlib-2.0.12-1.el6.x86_64.rpm
INSTALLING ORACLE GRID AND DATABASE PRE-REQUIREMENTS ON BOTH NODES/RACS -
(192.168.0.139 & 192.168.0.140)
yum install binutils-2.* elfutils-libelf-0.* glibc-2.* glibc-common-2.* ksh-2* libaio-0.* libgcc-4.* libstdc++-4.*
make-3.* elfutils-libelf-devel-* gcc-4.* gcc-c++-4.* glibc-devel-2.* glibc-headers-2.* libstdc++-devel-4.*
unixODBC-2.* compat-libstdc++-33* libaio-devel-0.* unixODBC-devel-2.* sysstat-7.* -y
INSTALLING BIND PRE-REQUIREMENTS ON DNS SERVER - (192.168.0.110)
yum -y install bind bind-utils
INSTALLING NFS SERVER PRE-REQUIREMENTS (10.75.40.31 & 10.75.40.32)
yum -y install nfs-utils

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TO OVERCOME ORA-00845: MEMORY_TARGET NOT SUPPORTED ON BOTH NODES/RACS -
(192.168.0.139 & 192.168.0.140)
SQL> startup nomount;
ORA-00845: MEMORY_TARGET not supported on this system
This error comes up because you tried to use the Automatic Memory Management (AMM) feature of Oracle 12C.
It seems that your shared memory filesystem (shmfs) is not big enough and enlarge your shared memory filesystem
to avoid the error above.
First of all, login as root and have a look at the filesystem:
df -hT
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_oracleem-lv_root
93G 19G 69G 22% /
tmpfs 5.9G 112K 5.9G 1% /dev/shm
/dev/sda1 485M 99M 362M 22% /boot
We can see that tmpfs has a size of 6GB. We can change the size of that filesystem by issuing the following
command (where “12g” is the size I want for my MEMORY_TARGET):
mount -t tmpfs shmfs -o size=12g /dev/shm
The shared memory file system should be big enough to accommodate the MEMORY_TARGET and
MEMORY_MAX_TARGET values, or Oracle will throw the ORA-00845 error. Note that when changing
something with the mount command, the changes are not permanent.
To make the change persistent, edit your /etc/fstab file to include the option you specified above:
tmpfs /dev/shm tmpfs size=12g 0 0
SQL> startup nomount
ORACLE instance started.
Total System Global Area 1.1758E+10 bytes
Fixed Size 2239056 bytes
Variable Size 5939135920 bytes
Database Buffers 5804916736 bytes
Redo Buffers 12128256 bytes
ADDING SWAP SPACE ON BOTH NODES/RACS - (192.168.0.139 & 192.168.0.140)
dd if=/dev/zero of=/root/newswapfile bs=1M count=8198
chmod +x /root/newswapfile
mkswap /root/newswapfile
swapon /root/newswapfile
To make the change persistent, edit your /etc/fstab file to include the option you specified above:

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vim /etc/fstab
/root/newswapfile swap swap defaults 0 0
Verify:
swapon -s
free -k
EDIT “/ETC/SYSCONFIG/NETWORK” AS ROOT USER ON BOTH NODES/RACS - (192.168.0.139 &
192.168.0.140)
NETWORKING=yes
HOSTNAME=kkcodb01
# Recommended value for NOZEROCONF
NOZEROCONF=yes
hostname kkcodb01
NETWORKING=yes
HOSTNAME=kkcodb02
# Recommended value for NOZEROCONF
NOZEROCONF=yes
hostname kkcodb02
UPDATE /ETC/HOSTS FILE ON BOTH NODES/RACS - (192.168.0.139 & 192.168.0.140)
Make sure that hosts file has right entries (remove or comment out lines with ipv6), make sure there is correct IP and
hostname, edit /etc/hosts as root:
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
#public
192.168.0.139 kkcodb01 kkcodb01.example.com
192.168.0.140 kkcodb02 kkcodb02.example.com
#vip
192.168.0.143 kkcodb01-vip kkcodb01-vip.example.com
192.168.0.144 kkcodb02-vip kkcodb02-vip.example.com
#scan vip
#192.168.0.145 kkcodb-scan kkcodb-scan.example.com
#priv
10.75.40.143 kkcodb01-priv1 kkcodb01-priv1.example.com
10.75.40.144 kkcodb02-priv1 kkcodb02-priv2.example.com

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BOND / TEAM MULTIPLE NETWORK INTERFACES (NIC) INTO A SINGLE INTERFACE ON BOTH
NODES/RACS - (192.168.0.139 & 192.168.0.140)
The Linux bonding driver provides a method for aggregating multiple network interfaces into a single logical
“bonded” interface. The behavior of the bonded interfaces depends upon the mode; generally speaking, modes
provide either hot standby or load balancing services. Additionally, link integrity monitoring may be performed.
Modify eth0, eth1, eth3…. up to ethx config files to bond with bond0 & bond1
Create a bond0 Configuration File
vim /etc/sysconfig/network-scripts/ifcfg-bond0
DEVICE=bond0
BOOTPROTO=none
ONBOOT=yes
NETWORK=192.168.0.0
NETMASK=255.255.255.0
IPADDR=192.168.0.139
USERCTL=no
PEERDNS=no
BONDING_OPTS="mode=1 miimon=100"
vim /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
HWADDR=
TYPE=Ethernet
MASTER=bond0
SLAVE=yes
ONBOOT=yes
BOOTPROTO=none
IPV6INIT=no
USERCTL=no
DEVICE=eth1
HWADDR=
TYPE=Ethernet
MASTER=bond0
SLAVE=yes
ONBOOT=yes
BOOTPROTO=none
IPV6INIT=no
USERCTL=no
Create a bond1 Configuration File

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vim /etc/sysconfig/network-scripts/ifcfg-bond1
DEVICE=bond1
BOOTPROTO=none
ONBOOT=yes
NETWORK=10.75.40.0
NETMASK=255.255.255.0
IPADDR=10.75.40.143
USERCTL=no
PEERDNS=no
BONDING_OPTS="mode=1 miimon=100"
DEVICE=eth2
HWADDR=
TYPE=Ethernet
MASTER=bond1
SLAVE=yes
ONBOOT=yes
BOOTPROTO=none
IPV6INIT=no
USERCTL=no
DEVICE=eth3
HWADDR=
TYPE=Ethernet
MASTER=bond1
SLAVE=yes
ONBOOT=yes
BOOTPROTO=none
IPV6INIT=no
USERCTL=no
vim /etc/modprobe.conf
alias bond0 bonding
alias bond1 bonding
CREATE USER AND GROUPS FOR ORACLE DATABASE AND GRID ON BOTH NODES/RACS -
(192.168.0.139 & 192.168.0.140)
groupadd -g 1000 oinstall
groupadd -g 1200 dba
useradd -u 1100 -g dba -G oinstall grid
useradd -u 1300 -g dba -G oinstall oracle
passwd grid
passwd oracle

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mkdir -p /app/oracle
mkdir -p /app/12.1.0/grid
chown grid:dba /app
chown grid:dba /app/oracle
chown grid:dba /app/12.1.0
chown grid:dba /app/12.1.0/grid
chmod -R 775 /app
mkdir -p /u01 ; mkdir -p /u02 ; mkdir -p /u03
(Giving R/W/E permission for grid user in dba gruop)
chown grid:dba /u01
chown grid:dba /u02
chown grid:dba /u03
chmod +x /u01
chmod +x /u02
chmod +x /u03
or
(Giving R/W/E permission for gird/oracle - all users in dba gruop)
chgrp dba /u01
chgrp dba /u02
chgrp dba /u03
chmod g+swr /u01
chmod g+swr /u02
chmod g+swr /u03
SETTING UP ENVIRONMENT VARIABLES FOR OS ACCOUNTS: GRID AND ORACLE ON BOTH
NODES/RACS - (192.168.0.139 & 192.168.0.140)
@ the kkcodb01 as the gird user
su – grid
vim /home/grid/.bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin
export PATH
# Oracle Settings
TMP=/tmp; export TMP
TMPDIR=$TMP; export TMPDIR

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ORACLE_HOSTNAME=kkcodb01; export ORACLE_HOSTNAME
ORACLE_UNQNAME=RAC; export ORACLE_UNQNAME
ORACLE_BASE=/app/oracle; export ORACLE_BASE
GRID_HOME=/app/12.1.0/grid; export GRID_HOME
DB_HOME=$ORACLE_BASE/product/12.1.0/db_1; export DB_HOME
ORACLE_HOME=$GRID_HOME; export ORACLE_HOME
ORACLE_SID=RAC1; export ORACLE_SID
ORACLE_TERM=xterm; export ORACLE_TERM
BASE_PATH=/usr/sbin:$PATH; export BASE_PATH
PATH=$ORACLE_HOME/bin:$BASE_PATH; export PATH
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib; export LD_LIBRARY_PATH
CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib; export
CLASSPATH
umask 022
@ the kkcodb02 as the gird user
su – grid
. ~/.bashrc
fi
export PATH
# Oracle Settings
ORACLE_UNQNAME=RAC; export ORACLE_UNQNAME
ORACLE_HOME=$GRID_HOME; export ORACLE_HOME
ORACLE_SID=RAC2; export ORACLE_SID
CLASSPATH
umask 022

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@ the kkcodb01 as the oracle user
su – oracle
. ~/.bashrc
fi
export PATH
# Oracle Settings
ORACLE_UNQNAME=oradb; export ORACLE_UNQNAME
ORACLE_HOME=$DB_HOME; export ORACLE_HOME
ORACLE_SID=oradb1; export ORACLE_SID
CLASSPATH
umask 022
@ the kkcodb02 as the oracle user
su – oracle
. ~/.bashrc
fi
export PATH
# Oracle Settings
ORACLE_UNQNAME=oradb; export ORACLE_UNQNAME

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ORACLE_HOME=$DB_HOME; export ORACLE_HOME
ORACLE_SID=oradb2; export ORACLE_SID
CLASSPATH
umask 022
KERNEL PARAMETERS ON BOTH NODES/RACS - (192.168.0.139 & 192.168.0.140)
MEMTOTAL=$(free -b | sed -n '2p' | awk '{print $2}')
SHMMAX=$(expr $MEMTOTAL / 2)
SHMMNI=4096
PAGESIZE=$(getconf PAGE_SIZE)
cat >> /etc/sysctl.conf << EOF
fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmmax = $SHMMAX
kernel.shmall = `expr ( $SHMMAX / $PAGESIZE ) * ( $SHMMNI / 16 )`
kernel.shmmni = $SHMMNI
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
EOF
cat >> /etc/security/limits.conf <<EOF
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
grid soft nproc 2047
grid hard nproc 16384
grid soft nofile 1024
grid hard nofile 65536
oracle hard memlock 5437300
EOF
cat >> /etc/pam.d/login <<EOF
session required pam_limits.so
EOF

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cat >> /etc/profile <<EOF
if [ $USER = "oracle" ] || [ $USER = "grid" ]; then
if [ $SHELL = "/bin/ksh" ]; then
ulimit -p 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
umask 022
fi
EOF
cat >> /etc/csh.login <<EOF
if ( $USER == "oracle" || $USER == "grid" )
then
limit maxproc 16384
limit descriptors 65536
endif
EOF
Execute the shutdown -r now on both nodes
DOWNLOADING ORACLE DATABASE AND GRID INFRASTRUCTURE SOFTWARE
You would have to download Oracle Database 12c Release 1 Grid Infrastructure (12.1.0.2.0) for Linux x86-64 –
here
Download – linuxamd64_12102_grid_1of2.zip
Download – linuxamd64_12102_grid_2of2.zip
Downloading and installing Oracle Database software
You would have to download Oracle Database 12c Release (12.1.0.2.0) for Linux x86-64 – here
Download – linuxamd64_12102_database_1of2.zip
Download – linuxamd64_12102_database_2of2.zip
Copy zip files to kkcodb01 server to /tmp directory using WinSCP
As a root user,
cd /tmp
chmod +x *.zip
for i in /tmp/linuxamd64_12102_grid_*.zip; do unzip $i -d /home/grid/stage; done
for i in /tmp/linuxamd64_12102_database_*.zip; do unzip $i -d /home/oracle/stage; done

GRID RAC Page 12
INSTALL BIND TO CONFIGURE DNS SERVER ON 192.168.0.138 WHICH RESOLVES DOMAIN NAME
OR IP ADDRESS.
yum -y install bind bind-utils
Configure BIND.
vim /etc/named.conf
//
// named.conf
//
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only nameserver (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//
acl "trusted" {
192.168.0.0/24;
10.75.40.0/24;
};
options {
listen-on port 53 { 127.0.0.1; 192.168.0.0/24; 10.75.40.0/24;};
#listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
allow-transfer { any; };
allow-query { localhost; trusted; };
recursion yes;
dnssec-enable yes;
dnssec-validation yes;
/* Path to ISC DLV key */
bindkeys-file "/etc/named.iscdlv.key";
managed-keys-directory "/var/named/dynamic";
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
zone "." IN {
type hint;
file "named.ca";
};

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include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";
include "/etc/named/named.conf.local";
vim /etc/named/named.conf.local
zone "example.com" {
type master;
file "/etc/named/zones/db.example.com"; # zone file path
};
zone "0.192.in-addr.arpa" {
type master;
file "/etc/named/zones/db.192.0"; # 192.168.0.0/16
};
vim /etc/named/zones/db.example.com
$TTL 604800
@ IN SOA ns1.example.com. root.example.com. (
3 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
; name servers - NS records
IN NS ns1.example.com.
; name servers - A records
ns1.example.com. IN A 192.168.0.139
; A records
kkcodb-scan IN A 192.168.0.145
;
kkcodb01-priv1 IN A 10.75.40.143
kkcodb02-priv1 IN A 10.75.40.144
;
kkcodb01 IN A 192.168.0.139
kkcodb02 IN A 192.168.0.140
;
nfs IN A 192.168.0.30
nfs-active IN A 10.75.40.31
nfs-pasive IN A 10.75.40.32

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vim /etc/named/zones/db.192.0
$TTL 604800
@ IN SOA ns1.example.com. root.example.com. (
3 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
; name servers - NS records
IN NS ns1.example.com.
; PTR Records
139.0 IN PTR ns1.example.com. ; 192.168.0.139
;
145.0 IN PTR kkcodb-scan.example.com. ; 192.168.0.145
;
143.40 IN PTR kkcodb01-priv1.example.com. ; 10.75.40.143
144.40 IN PTR kkcodb02-priv2.example.com. ; 10.75.40.144
;
139.0 IN PTR kkcodb01.example.com. ; 192.168.0.139
140.0 IN PTR kkcodb02.example.com. ; 192.168.0.140
;
30.0 IN PTR nfs.example.com. ; 192.168.0.30
31.40 IN PTR nfs-active.example.com. ; 10.75.40.31
32.40 IN PTR nfs-pasive.example.com. ; 10.75.40.32
chkconfig named on
service named restart
named-checkzone 0.192.in-addr.arpa /etc/named/zones/db.192.0
@ ALL OF THEM ARE SHOULD BE CONFIGURING DNS CLIENT SETTING AS FOLLOWS
(INCLUDING BIND SERVER ALSO),
vim /etc/sysconfig/networking/profiles/default/resolv.conf
nameserver 192.168.0.138
search example.com
vim /etc/resolv.conf
nameserver 192.168.0.138
search example.com
service network restart

GRID RAC Page 15
chkconfig NetworkManager off
service network restart
cat /etc/resolv.conf
ID DEVICE eth0, eth1…ethx DOES NOT SEEM TO BE PRESENT:
I was able to fix the problem by deleting the /etc/udev/rules.d/70-persistant-net.rules file
and restarting the virtual machine which generated a new file and got everything set up correctly.
Remove .ssh directory form individual users and restart the servers.
LOGICAL VOLUME MANAGEMENT – LVM ON NFS & NFS BACKUP KEEPER SERVERS
LVM is a logical volume manager for the Linux kernel that manages disk drives and similar mass-storage devices.
Heinz Mauelshagen wrote the original code in 1998, taking its primary design guidelines from the HP-UX's volume
manager.
The installers for the CrunchBang, CentOS, Debian, Fedora, Gentoo, Mandriva, MontaVista Linux, openSUSE,
Pardus, Red Hat Enterprise Linux, Slackware, SLED, SLES, Linux Mint, Kali Linux, and Ubuntu distributions are
LVM-aware and can install a bootable system with a root filesystem on a logical volume.
LVM IS COMMONLY USED FOR THE FOLLOWING PURPOSES:
1. Managing large hard disk farms by allowing disks to be added and replaced without downtime or service
disruption, in combination with hot swapping.
2. On small systems (like a desktop at home), instead of having to estimate at installation time how big a partition
might need to be in the future, LVM allows file systems to be easily resized later as needed.
3. Performing consistent backups by taking snapshots of the logical volumes.
4. Creating single logical volumes of multiple physical volumes or entire hard disks (somewhat similar to RAID
0, but more similar to JBOD), allowing for dynamic volume resizing.
5. the Ganeti solution stack relies on the Linux Logical Volume Manager
6. LVM can be considered as a thin software layer on top of the hard disks and partitions, which creates an
abstraction of continuity and ease-of-use for managing hard drive replacement, re-partitioning, and backup.
THE LVM CAN:
1. Resize volume groups online by absorbing new physical volumes (PV) or ejecting existing ones.
2. Resize logical volumes (LV) online by concatenating extents onto them or truncating extents from them.
3. Create read-only snapshots of logical volumes (LVM1).
4. Create read-write snapshots of logical volumes (LVM2).
5. Create RAID logical volumes (available in newer LVM implementations): RAID 1, RAID 5, RAID 6, etc.
6. Stripe whole or parts of logical volumes across multiple PVs, in a fashion similar to RAID 0.
7. Configure a RAID 1 backend device (a PV) as write-mostly, resulting in reads being avoided to such devices.
8. Allocate thin-provisioned logical volumes from a pool.
9. Move online logical volumes between PVs.
Split or merge volume groups in situ (as long as no logical volumes span the split).
This can be useful when migrating whole logical volumes to or from offline storage.
10. Create hybrid volumes by using the dm-cache target, which allows one or more fast storage devices, such as
flash-based solid-state drives (SSDs), to act as a cache for one or more slower hard disk drives (HDDs).

GRID RAC Page 16
CREATE A PHYSICAL VOLUME
Input Command
pvcreate -ff /dev/sdb
Output
Physical volume "/dev/sdb" successfully created
DISPLAY A STATUS OF PHYSICAL VOLUMES
Input Command
pvdisplay /dev/sdb
Output
"/dev/sdb" is a new physical volume of "150.00 GiB"
--- NEW Physical volume ---
PV Name /dev/sdb
VG Name
PV Size 150.00 GiB
CREATE A VOLUME GROUP
Input Command
vgcreate volg1 /dev/sdb
Output
Volume group "volg1" successfully created
DISPLAY VOLUME GROUPS
Input Command
vgdisplay
Output
--- Volume group ---
VG Name volg1
System ID
Format l vm2

GRID RAC Page 17
VG Access read/write
VG Status resizable
VG Size 150.00 GiB
CREATE A LOGICAL VOLUME
Input Command
lvcreate -L 149G -n lv_data volg1
NOTE: create a Logical Volumes 'lv_data' as 150G in volume group 'vg_data'
Output
Logical volume "lv_data" created
DISPLAY STATUS OF LOGICAL VOLUMES
Input Command
lvdisplay
Output
--- Logical volume ---
LV Path /dev/volg1/lv_data
LV Name lv_data
VG Name vg_data
LV Write Access read/write
LV Status available
FORMATTING LOGICAL VOLUME BEFORE MOUNT IT.
Input Command
mkfs.ext4 /dev/volg1/lv_data

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MOUNTING LOGICAL VOLUME INTO A SPECIFIC iSCSI FOLDER
Input Command
mkdir -p /u01/VM/iSCSI_shares
mount /dev/volg1/lv_data /u01/VM/iSCSI_shares
vim /etc/fstab
/dev/volg1/lv_data /u01/VM/iSCSI_shares ext4 defaults 0 0
CONFIGURING LSYNCD BACKUP SERVER AS A BACKUP KEEPER
Lsyncd is a tool I discovered a few weeks ago, it is a synchronization server based primarily on Rsync. It is a server
daemon that runs on the “master” server, and it can sync / mirror any file or directory changes within seconds into
your “slaves” servers, you can have as many slave servers as you want. Lsyncd is constantly watching a local directory
and monitoring file system changes using inotify / fsevents.
By default, lsyncd uses rsync to send the data over the slave machines, however there are other ways to do it.
It does not require you to build new filesystems or block devices, and does not harm your server I/O performance.
yum -y install lua lua-devel pkgconfig gcc asciidoc lsyncd rsync
@ 10.75.40.30/192.168.0.30
vim /etc/lsyncd.conf
settings={
logfile="/var/log/lsyncd.log",
statusFile="/tmp/lsyncd.stat",
statusInterval=1,
}
sync{
default.rsync,
source="/u01/VM/nfs_shares",
target="192.168.0.31:/u01/VM/nfs_shares",
rsync={rsh="/usr/bin/ssh -l root -i /root/.ssh/id_rsa",}
}
rsync = {
compress = true,
acls = true,
verbose = true,
owner = true,
group = true,

GRID RAC Page 19
perms = true,
rsh = "/usr/bin/ssh -p 22 -o StrictHostKeyChecking=no"
service lsyncd start
chkconfig lsyncd on
mkdir -p /var/log/lsyncd
CONFIGURING iSCSI SERVER (10.75.40.30 / 192.168.0.30)
groupadd -g 1000 oinstall
groupadd -g 1200 dba
useradd -u 1100 -g dba -G oinstall grid
useradd -u 1300 -g dba -G oinstall oracle
passwd grid
passwd oracle
mkdir -p /u01/VM/iSCSI_shares/shared_1
chown grid:dba /u01/VM/iSCSI_shares/shared_1
chmod +x /u01/VM/iSCSI_shares/shared_1
CONFIGURE ISCSI TARGET
A storage on a network is called iSCSI Target, a Client which connects to iSCSI Target is called iSCSI Initiator.
Install administration tools.
yum -y install scsi-target-utils
Configure iSCSI Target
For example, create a disk image under the [/u01/VM/iSCSI_shares] directory and set it as a shared disk.
dd if=/dev/zero of=/u01/VM/iSCSI_shares/shared_1/disk01.img count=0 bs=1 seek=50G

GRID RAC Page 20
vim /etc/tgt/targets.conf
<target iqn.2016-12.192.168.0.30:target00>
# provided devicce as a iSCSI target
backing-store /u01/VM/iSCSI_shares/shared_1/disk01.img
# iSCSI Initiator's IP address you allow to connect
initiator-address 192.168.0.0/24
# authentication info ( set anyone you like for "username", "password" )
incominguser chanaka z80cpu
</target>
Start tgtd and verify status.
/etc/rc.d/init.d/tgtd start
chkconfig tgtd on
tgtadm --mode target --op show
CONFIGURING NFS MOUNT POINTS ON BOTH NODES/RACS - (192.168.0.139 & 192.168.0.140)
Configure iSCSI Initiator.
yum -y install iscsi-initiator-utils
vim /etc/iscsi/iscsid.conf
# line 56: uncomment
node.session.auth.authmethod = CHAP
# line 60,61: uncomment and set username and password which set on iSCSI Target
node.session.auth.username = chanaka
node.session.auth.password = z80cpu
Discover target
iscsiadm -m discovery -t sendtargets -p 192.168.0.30
Confirm status after discovery
iscsiadm -m node -o show
Login to target
iscsiadm -m node –login

GRID RAC Page 21
Show established session
iscsiadm -m session -o show
Show partitions
cat /proc/partitions
fdisk -l | grep Disk
Added new device provided from target as [sdb, sdc, sdd]
yum -y install parted
Create a label
parted --script /dev/sdb "mklabel msdos"
parted --script /dev/sdc "mklabel Msdos"
parted --script /dev/sdd "mklabel MSdos"
Create a partition
parted --script /dev/sdb "mkpart primary 0% 100%"
parted --script /dev/sdc "mkpart primary 0% 100%"
parted --script /dev/sdd "mkpart primary 0% 100%"
Format with EXT4
mkfs.ext4 /dev/sdb1
mkfs.ext4 /dev/sdc1
mkfs.ext4 /dev/sdd1
mount /dev/sdb1 /u01
mount /dev/sdc1 /u02
mount /dev/sdd1 /u03
df -hT
vim /etc/rc.local
iscsiadm -m discovery -t sendtargets -p 192.168.0.30
iscsiadm -m node --login
mount /dev/sdb1 /u01
mount /dev/sdc1 /u02
mount /dev/sdd1 /u03
init 6

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INSTALLING ORACLE GRID ON BOTH NODES FROM 192.168.0.139

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INSTALLING ORACLE DATABASE ON BOTH NODES FROM 192.168.0.139

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ADMINISTRATING THE GRID INSFRASTUCTURE ON BOTH OF RAC NODES (as a grid user)
su - grid
crsctl status resource -t
--------------------------------------------------------------------------------
Name Target State Server State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.LISTENER.lsnr
ONLINE ONLINE kkcodb01 STABLE
ora.asm
OFFLINE OFFLINE kkcodb01 Instance Shutdown,ST
ABLE
OFFLINE OFFLINE kkcodb02 STABLE
ora.net1.network
ora.ons
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE kkcodb01 STABLE
ora.MGMTLSNR
1 ONLINE ONLINE kkcodb01 169.254.225.48 10.75
.40.143,STABLE
ora.cvu
ora.kkcodb01.vip
ora.kkcodb02.vip
ora.mgmtdb
1 ONLINE ONLINE kkcodb01 Open,STABLE
ora.oc4j

GRID RAC Page 42
ora.oradb.db
ora.scan1.vip
ora.scan2.vip
ora.scan3.vip
ora.scan4.vip
srvctl status instance -db oradb -node kkcodb01
srvctl status instance -db oradb -node kkcodb02
Instance oradb1 is running on node kkcodb01
srvctl status instance -d oradb -i oradb1
srvctl status instance -d oradb -i oradb2
SUMMARY OF THE MOST IMPORTANT COMMANDS TO RAISE / STOP / CHECK CLUSTER
RESOURCES
crsctl check crs
crsctl check cluster -n kkcodb01
crsctl check ctss
crsctl config crs (requiere root)
cat /etc/oracle/scls_scr/rac1/root/ohasdstr
crsctl stat res -t
crsctl stat res ora.rac.db -p
crsctl stat res ora.rac.db -f
crsctl query css votedisk
olsnodes -n -i -s -t
oifcfg getif
ocrcheck
ocrcheck -local (requiere root)
ocrconfig -showbackup
ocrconfig -add +TEST
cluvfy comp crs -n rac1
srvctl status database -d oradb
srvctl status instance -d oradb -i kkcodb01
srvctl status service -d oradb
srvctl status nodeapps

GRID RAC Page 43
srvctl status vip -n kkcodb01
srvctl status listener -l LISTENER
srvctl status asm -n kkcodb01
srvctl status scan
srvctl status scan_listener
srvctl status server -n kkcodb01
srvctl status diskgroup -g DGRAC
srvctl config database -d oradb
srvctl config service -d oradb
srvctl config nodeapps
srvctl config vip -n kkcodb01
srvctl config asm -a
srvctl config listener -l LISTENER
srvctl config scan
srvctl config scan_listener
crsctl stop cluster
crsctl start cluster
crsctl stop crs
crsctl start crs
crsctl disable
crsctl disable
srvctl stop database -d oradb -o immediate
srvctl start database -d oradb
srvctl stop instance -d oradb -i kkcodb01 -o immediate
srvctl start instance -d oradb -i kkcodb01
srvctl stop service -d oradb -s OLTP -n kkcodb01
srvctl sart service -d oradb -s OLTP
srvctl stop nodeapps -n kkcodb01
srvctl start nodeapps
srvctl stop vip -n rac1
srvctl start vip -n rac1
srvctl stop asm -n rac1 -o abort -f
srvctl start asm -n rac1
srvctl stop listener -l LISTENER
srvctl start listener -l LISTENER
srvctl stop scan -i 1
srvctl start scan -i 1
srvctl stop scan_listener -i 1
srvctl start scan_listener -i 1
srvctl stop diskgroup -g TEST -n kkcodb01, kkcodb02
srvctl start diskgroup -g TEST -n kkcodb01, kkcodb02
srvctl relocate service -d RAC -s OLTP -i kkcodb01 -t kkcodb02
srvctl relocate scan_listener -i 1 rac1

GRID RAC Page 44
DELETING THE GRID INSFRASTUCTURE ON BOTH OF RAC NODES
Login as grid user:
Removin GRID
$ORACLE_HOME/deinstall/deinstall
Removing Brocken Grid Installation:
On all cluster nodes except the last, run the following command as the "root" user.
perl /u01/app/11.2.0/grid/crs/install/rootcrs.pl -verbose -deconfig -force
perl $GRID_HOME/crs/install/rootcrs.pl -verbose -deconfig -force
Cleanup steps for cluster node removal for following scenarios:
rm -rf /app/*
#rm -rf /u01/* ; rm -rf /u02/* ; rm -rf /u03/*
rm -rf /etc/oracle/*
rm -rf /etc/oraInst.loc
rm -rf /etc/oratab
rm -rf /var/tmp/.oracle/*
rm -rf /home/oracle/.ssh/
rm -rf /home/grid/.ssh/
shutdown -r now
CONNECTING WITH ORACLE SQL DEVELOPER

GRID RAC Page 45

Oracle cluster installation with grid and iscsi

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