Installing Oracle 12c Release 1 RAC on Linux 7

This article explains how to install a 2 nodes Oracle 12cR1 Real Application Cluster (RAC) on Oracle Linux 7. I did this installation on Oracle Virtual Box by creating 2 virtual machines with shared storage. OS platform I used is Oracle Enterprise Linux 7 (update 1), and Oracle GI and RDBMS version is 12.1.0.2. Same installation guide should work for Redhat Linux 7 also.

There will be no difference in installation steps if there are more than 2 nodes in the RAC setup.

Official document for 12c RAC installation can be found by clicking at the following link.
http://docs.oracle.com/database/121/CWLIN/toc.htm

Prerequisites

Prepare all the nodes by installing Oracle Linux 7. Have private interconnects setup, and shared storage mounted on all the nodes. For this example, I have 3 disks (2G size each) for CRS diskgroup to store OCR and Voting disk, and 1 disk (4G) for DATA diskgroup to store the database.
Please note that you should have external redundancy for these disks, otherwise you should specify at least 3 different locations for storing voting disk, and 2 locations to store OCR .
Have 2 public IPs, 2 virtual IPs, 2 private IPs and 1 SCAN IP (from public subnet), which we will use later during the installation. For this article, node names for are as follows 

Public
salman1.salman.com
salman2.salman.com

Virtual
salman1-vip.salman.com
salman2-vip.salman.com

Private
salman1-priv.salman.com
salman2.priv.salman.com

SCAN
salman-scan.salman.com

Recommended way for SCAN configuration is to have 3 IP addresses which are resolved through DNS. Since I don’t have DNS for my environment, I will be using entry in the host file for the SCAN, and will use a single SCAN IP address

Download and unzip the software 
Download 12c Grid Infrastructure and RDBMS softwares.
First release (12.1.0.1) can be downloaded from www.oracle.com, but since we are installing 12.1.0.2 here, we would need to download patch set 1769377. First 2 zip files are for database and last 2 are for Grid Infrastructure binaries.

For this article, I extracted the software under /u02/12.1.0.2/ directory.

Now we start the installation. Following are the steps to install Oracle 12c RAC on Linux.

1)
On each node, edit /etc/selinux/config and set value for SELINUX to either “permissive” or “disabled”

SELINUX=permissive

2)
On each node, configure Shared Memory File System. Add following line in /etc/fstab file for shared memory file system. Modify the value of “size” based on the amount of memory you will be using for your SGA.

tmpfs                                   /dev/shm                tmpfs   rw,exec,size=8g        0 0

3)
On each node, disable the firewall. 

[root@salman1 ~]# systemctl start firewalld.service [root@salman1 ~]# systemctl stop firewalld.service [root@salman1 ~]# systemctl disable firewalld.service rm '/etc/systemd/system/basic.target.wants/firewalld.service' rm '/etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service'

4)
Reboot all nodes

5)
On each node, in /etc/host file, add the IP addresses and fully qualified names of each node of RAC, including public IPs; virtual IP; private IPs and SCAN IP.

#Public 192.231.231.40 salman1.salman.com       salman1 192.231.231.41 salman2.salman.com       salman2 #Virtual 192.231.231.50 salman1-vip.salman.com   salman1-vip 192.231.231.51 salman2-vip.salman.com   salman2-vip #Private 10.10.10.10 salman1-priv.salman.com     salman1-priv 10.10.10.11 salman2-priv.salman.com     salman2-priv #SCAN 192.231.231.60 salman-scan.salman.com   salman-scan

Make sure that Public interface and Private interfaces have the same name and they list in same order on all the nodes, in ifconfig command (my public interface name is enp0s3 and private interface name is enp0s8)

6)
Test the nodes connectivity with each other using ping command from each node to the other node(s). SCAN IP and Virtual IPs are not required to be tested at this point.

From node salman1 [root@salman1 ~]#  ping salman1 [root@salman1 ~]#  ping salman1-priv [root@salman1 ~]#  ping salman2 [root@salman1 ~]#  ping salman2-priv From node salman2 [root@salman2 ~]#  ping salman2 [root@salman2 ~]#  ping salman2-priv [root@salman2 ~]#  ping salman1 [root@salman2 ~]#  ping salman1-priv

7)
We can perform automatic configuration of the node using “yum” command. If you want to do manual configuration, skip this step and go to next step.
Automatic configuration would perform following tasks
- Installation of required RPM packages
- Setup kernel parameters in /etc/sysctl.conf file
- Creation of OS groups (oinstall, dba) and OS user (oracle)
- Setting limits for installation user “oracle” 

For Oracle Linux, follow the steps mentioned in the following documents to access the online yum repository.
http://public-yum.oracle.com/

On each node, execute following command to perform all prerequisites automatically.

[root@salman1 ~]# yum install oracle-rdbms-server-12cR1-preinstall –y

As already mentioned, above command will install all required packages which are needed for grid infrastructure and/or RDBMS software installation. If you also plan to install a 32-bit client on this x86_64 server, you would also need to install 32-bit version of these RPM packages manually as follows.

[root@salman1 ~]# yum install glibc-2.17-36.el7.i686 [root@salman1 ~]# yum install glibc-devel-2.17-36.el7.i686 [root@salman1 ~]# yum install libaio-0.3.109-9.el7.i686 [root@salman1 ~]# yum install libaio-devel-0.3.109-9.el7.i686 [root@salman1 ~]# yum install libXi-1.7.2-1.el7.i686 [root@salman1 ~]# yum install libXtst-1.2.2-1.el7.i686 [root@salman1 ~]# yum install libgcc-4.8.2-3.el7.i686 [root@salman1 ~]# yum install libstdc++-4.8.2-3.el7.i686 [root@salman1 ~]# yum install libstdc++-devel-4.8.2-3.el7.i686

If you want to install form Oracle Linux installation media, use “rpm -i” command to install the packages.
Automatic configuration also sets the required kernel parameters in /etc/sysctl.conf file.

Automatic configuration would create default OS groups i.e. oinstall and dba (with group ID 54321 and 54322 respectively), and OS user (oracle) with user ID 54321. If you plan to implement role separation by creating a “grid” user to install and manage grid infrastructure, and use “oracle” user for database software, you would need to create more OS groups and “grid” user manually, as follows (on both nodes).

Add groups [root@salman1 ~]#  groupadd -g 54323 oper [root@salman1 ~]#  groupadd -g 54325 asmdba [root@salman1 ~]#  groupadd -g 54328 asmadmin [root@salman1 ~]#  groupadd -g 54329 asmoper Add user [root@salman1 ~]# useradd -u 54322 -g oinstall -G dba,asmdba,asmadmin,asmoper grid Set passwords for both users (oracle and grid) [root@salman1 ~]# passwd oracle [root@salman1 ~]# passwd grid Make user oracle member of oper and asmdba groups [root@salman1 ~]#  usermod  -g oinstall -G dba,oper,asmdba oracle

Automatic configuration also sets the resource limits for the default user “oracle”, by creating oracle-rdbms-server-12cR1-preinstall.conf file under /etc/security/limits.d directory. If you have created user “grid” for grid infrastructure installation, you would also need to set these limits manually for grid user. You can create a separate .conf file under /etc/security/limits.d directory (.conf file name can be anything), or append following lines in oracle-rdbms-server-12cR1-preinstall.conf file

grid soft nofile 1024 grid hard nofile 65536 grid soft nproc 16384 grid hard nproc 16384 grid soft stack 10240 grid hard stack 32768 grid hard memlock 134217728 grid soft memlock 134217728

8)
Skip this step if you have followed Step 7 above; otherwise perform following tasks on each node.
Install following RPM packages (or latest version) from either yum repository or from Linux 7 media

binutils-2.23.52.0.1-12.el7.x86_64 compat-libcap1-1.10-3.el7.x86_64 gcc-4.8.2-3.el7.x86_64 gcc-c++-4.8.2-3.el7.x86_64 glibc-2.17-36.el7.i686 glibc-2.17-36.el7.x86_64 glibc-devel-2.17-36.el7.i686 glibc-devel-2.17-36.el7.x86_64 libaio-0.3.109-9.el7.i686 libaio-0.3.109-9.el7.x86_64 libaio-devel-0.3.109-9.el7.i686 libaio-devel-0.3.109-9.el7.x86_64 ksh make-3.82-19.el7.x86_64 libXi-1.7.2-1.el7.i686 libXi-1.7.2-1.el7.x86_64 libXtst-1.2.2-1.el7.i686 libXtst-1.2.2-1.el7.x86_64 libgcc-4.8.2-3.el7.i686 libgcc-4.8.2-3.el7.x86_64 libstdc++-4.8.2-3.el7.i686 libstdc++-4.8.2-3.el7.x86_64 libstdc++-devel-4.8.2-3.el7.i686 libstdc++-devel-4.8.2-3.el7.x86_64 sysstat-10.1.5-1.el7.x86_64 unixODBC-2.3.1 Example (yum) [root@salman1 ~]# yum install glibc Example (Linux Media) [root@salman1 ~]# rpm -i glibc Example (Check after install) [root@salman1 ~]# rpm -q glibc glibc-2.17-55.el7.x86_64

On each node, edit /etc/sysctl.conf add following entries to set kernel parameters

fs.file-max = 6815744 kernel.sem = 250 32000 100 128 kernel.shmmni = 4096 kernel.shmall = 1073741824 kernel.shmmax = 4398046511104 kernel.panic_on_oops = 1 net.core.rmem_default = 262144 net.core.rmem_max = 4194304 net.core.wmem_default = 262144 net.core.wmem_max = 1048576 fs.aio-max-nr = 1048576 net.ipv4.ip_local_port_range = 9000 65500

Execute following command after adding above lines

/sbin/sysctl -p

On each nodes, create a .conf file (file name can be anything) under /etc/security/limits.d directory to set shell limits for grid and oracle users. For example, create file oracleusers.conf with following entries. Alternatively, you can also set the limits in /detc/security/limits.conf. But I would prefer to set under /etc/security/limits.d directory.

# Grid user grid soft nofile 1024 grid hard nofile 65536 grid soft nproc 16384 grid hard nproc 16384 grid soft stack 10240 grid hard stack 32768 grid hard memlock 134217728 grid soft memlock 134217728 # Oracle user oracle soft nofile 1024 oracle hard nofile 65536 oracle soft nproc 16384 oracle hard nproc 16384 oracle soft stack 10240 oracle hard stack 32768 oracle hard memlock 134217728 oracle soft memlock 134217728

9)
On each node, install oracleasm-support and oracleasmlib, and then configure oracleasm.
oracleasm kernel driver is built in Oracle Linux and does not need to be installed. After installing oracleasm-support and oracleasmlib packages, oracleasm driver starts working.

If you are using some other flavour of Linux, for example RedHat Linux, then you would need to install all 3 packages (oracleasm driver, oracleasm-support and oracleasmlib).
Install oracleasm-support from yum repository or from Linux media, then download oracleasmlib package form the following URL, and install.
http://www.oracle.com/technetwork/server-storage/linux/asmlib/ol7-2352094.html

Install oracleasmlib and oracleasm-support [root@salman1 ~]#  yum install oracleasm-support [root@salman1 ~]#  rpm -i oracleasm-lib* Configure oracleasm (highlighted in red are the inputs during configuration) [root@salman1 ~]# /etc/init.d/oracleasm configure Configuring the Oracle ASM library driver. This will configure the on-boot properties of the Oracle ASM library driver.  The following questions will determine whether the driver is loaded on boot and what permissions it will have.  The current values will be shown in brackets ('[]').  Hitting <ENTER> without typing an answer will keep that current value.  Ctrl-C will abort. Default user to own the driver interface []: grid Default group to own the driver interface []: asmadmin Scan for Oracle ASM disks on boot (y/n) [y]:y Writing Oracle ASM library driver configuration: done Initializing the Oracle ASMLib driver:                     [  OK  ] Scanning the system for Oracle ASMLib disks:               [  OK  ] Check Configuration [root@salman1 ~]# /usr/sbin/oracleasm configure ORACLEASM_UID=grid ORACLEASM_GID=asmadmin ORACLEASM_SCANBOOT=true ORACLEASM_SCANORDER="" ORACLEASM_SCANEXCLUDE="" ORACLEASM_USE_LOGICAL_BLOCK_SIZE="false"

10)
On each node, add following in /etc/pam.d/login file if not present already

session required /lib64/security/pam_limits.so session required pam_limits.so

11)
On each node, stop and disable NTP (chronyd) 
During the installation, Cluster Time Synchronization Service would be installed and used instead or NTP.

[root@salman1 ~]# systemctl stop chronyd [root@salman1 ~]# systemctl disable chronyd  rm '/etc/systemd/system/multi-user.target.wants/chronyd.service'

12)
On each node, make sure /etc/resolv.conf file contain entries similar to the following. Replace salman.com with your domain name and 192.231.231.1 with your names server IP address

search salman.com nameserver 192.231.231.1

13)
On each nodee, install cvuqdisk RPM
This is required for cluvfy (Cluster Verification Utility) to work properly to discover shared disks, otherwise an error will be reported while running cluvfy. Log in as root and execute following steps

Set the environment variable CVUQDISK_GRP to point to the group what will own cvuqdisk, which is oinstall group [root@salman1 ~]# export CVUQDISK_GRP=oinstall Install cvuqdisk which will be found under unzipd Grid Infrastructure software [root@salman1 ~]# cd /u02/12.1.0.2/grid/rpm [root@salman1 ~]#  rpm –i cvuqdisk-1.0.9-1.rpm

14)
On each node, create directories and change ownership to respective users (grid and oracle).

[root@salman1 ~]# mkdir -p /u01/app/12.1.0/grid [root@salman1 ~]# mkdir -p /u01/app/grid [root@salman1 ~]# mkdir -p /u01/app/oracle [root@salman1 ~]# chown -R grid:oinstall /u01 [root@salman1 ~]# chown oracle:oinstall /u01/app/oracle [root@salman1 ~]# chmod -R 775 /u01/

15)
From any node, partition the shared disks. As stated in the beginning, I have total 4 disks - 3 for OCR and Voting disk, and 1 for DATA diskgroup. Highlighted disks are the disks I will be using here to create partitions and then creating ASM disks using oracleasm.

[root@salman1 ~]# ls -l /dev/sd* brw-rw----. 1 root disk 8,  0 Apr  7 11:38 /dev/sda brw-rw----. 1 root disk 8,  1 Apr  7 11:38 /dev/sda1 brw-rw----. 1 root disk 8,  2 Apr  7 11:38 /dev/sda2 brw-rw----. 1 root disk 8,  3 Apr  7 11:38 /dev/sda3 brw-rw----. 1 root disk 8,  4 Apr  7 11:38 /dev/sda4 brw-rw----. 1 root disk 8,  5 Apr  7 11:38 /dev/sda5 brw-rw----. 1 root disk 8, 16 Apr  7 11:38 /dev/sdb brw-rw----. 1 root disk 8, 17 Apr  7 11:38 /dev/sdb1 brw-rw----. 1 root disk 8, 32 Apr  7 11:38 /dev/sdc brw-rw----. 1 root disk 8, 48 Apr  7 11:38 /dev/sdd brw-rw----. 1 root disk 8, 64 Apr  7 11:38 /dev/sde brw-rw----. 1 root disk 8, 80 Apr  7 11:38 /dev/sdf

Use following steps to partition each disk (/dev/sdc, /dev/sdd, /dev/sde, /dev/sdf).

[root@salman1 ~]# fdisk /dev/sdc Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Device does not contain a recognized partition table Building a new DOS disklabel with disk identifier 0x457c3565. Command (m for help): n Partition type:    p   primary (0 primary, 0 extended, 4 free)    e   extended Select (default p): p Partition number (1-4, default 1): 1 First sector (2048-25165823, default 2048): Using default value 2048 Last sector, +sectors or +size{K,M,G} (2048-25165823, default 25165823): Using default value 25165823 Partition 1 of type Linux and of size 12 GiB is set Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks.

For simplicity, after executing command fdisk for each disk, press following sequence keys
n, p, 1, <enter>, <enter>, w to create new partitions for each disk
After the partitioning completes, following are my partitioned disks

[root@salman1 ~]# ls -l /dev/sd* … … … brw-rw----. 1 root disk 8, 32 Apr  7 12:04 /dev/sdc brw-rw----. 1 root disk 8, 33 Apr  7 12:04 /dev/sdc1 brw-rw----. 1 root disk 8, 48 Apr  7 12:08 /dev/sdd brw-rw----. 1 root disk 8, 49 Apr  7 12:08 /dev/sdd1 brw-rw----. 1 root disk 8, 64 Apr  7 12:08 /dev/sde brw-rw----. 1 root disk 8, 65 Apr  7 12:08 /dev/sde1 brw-rw----. 1 root disk 8, 80 Apr  7 12:08 /dev/sdf brw-rw----. 1 root disk 8, 81 Apr  7 12:08 /dev/sdf1

16)
From any node, use oracleasm command to create ASM disks.

[root@salman1 ~]# oracleasm createdisk crs1 /dev/sdc1 Writing disk header: done Instantiating disk: done [root@salman1 ~]# oracleasm createdisk crs2 /dev/sdd1 Writing disk header: done Instantiating disk: done [root@salman1 ~]# oracleasm createdisk crs3 /dev/sde1 Writing disk header: done Instantiating disk: done [root@salman1 ~]# oracleasm createdisk data /dev/sdf1 Writing disk header: done Instantiating disk: done [root@salman1 ~]# [root@salman1 sys]# oracleasm scandisks Reloading disk partitions: done Cleaning any stale ASM disks... Scanning system for ASM disks... [root@salman1 sys]# oracleasm listdisks CRS1 CRS2 CRS3 DATA

Execute “oracleasm scandisks” and “oracleasm listdisks” command on all other nodes also and you should be able to see all the ASM disks.
From the other node(s), issue following as root

[root@salman2 ~]# oracleasm scandisks Reloading disk partitions: done Cleaning any stale ASM disks... Scanning system for ASM disks... [root@salman2 ~]# oracleasm listdisks CRS1 CRS2 CRS3 DATA

17)

On each node, add IO scheduler for ASM disks. Modify highlighted disks names to match your environment.

[root@salman1 ~]# echo deadline > /sys/block/sdc/queue/scheduler [root@salman1 ~]# echo deadline > /sys/block/sdd/queue/scheduler [root@salman1 ~]# echo deadline > /sys/block/sde/queue/scheduler [root@salman1 ~]# echo deadline > /sys/block/sdf/queue/scheduler

18)
On each node, add following in /home/<username>/.bash_profile file of both users; “grid” and “oracle”. At this point, we do no need to set other environment variables i.e. ORACLE_BASE or ORACLE_HOME.

umask 022

19)
Run cluvfy (Optional)
In the node where you plan to initiate the installation, open a terminal and log in as “grid” user, and you can optionally execute cluster verification utility (cluvfy). Click here to see the output of cluvfy

[grid@salman1 ~]$ cd /u02/12.1.0.2/grid/ [grid@salman1 ~]$ ./runcluvfy.sh stage -pre crsinst -n salman1 -fixup -verbose

This will fail if user equivalence (passwordless ssh login) has not been configured from each node to other node. Passwordless login using ssh is also optional at this point, because installer will allow us to configure user equivalence during the installation wizard as you will see in a while. To learn how to configure SSH connectivity prior to the installation, click here

20)
Choose any node form where you want to initiate the installation and log in as installation user (“grid” in this example). You would choose desktop logging in to the server. If you did not install any desktop environment, use X Window System.

21)
Start installation from the extracted software directory (/u02/12.1.0.2/grid), execute “./runInstaller” to begin the installation

22) 

Click Next

23) 

Click Next

24) 

Select “Advance Installation” and click Next

25)
Click Next

26)
Change Cluster Name and SCAN name and SCAN Port, if needed. Make sure that SCAN Name is same as specified in /etc/host file. Uncheck “Configure GNS”. Click Next

27)
You will see only first node (where you initiated installation) here. Click Add to open a window to provide details of the second node. You would need to add details of every node in your RAC environment by clicking Add button.
Click SSH Connectivity. If you have already done SSH configuration for passwordless login to the remote node(s), you should skip next setup.

28)
After clicking SSH Connectivity, you will see text boxes to provide username (grid) and password to setup SSH connectivity. Provide password and click on Setup button. It will take a few seconds to configure the SSH.

29)
Once SSH configuration completes, click OK, then click Next

30)
Select correct network interfaces for Public and Private interconnects and click Next

31)
Click Next

32)
Provide diskgroup name. I am providing CRS as I would store OCR and Voting disk on this diskgroup. I am also selecting “External” redundancy. If your disks are not already mirrored, you should use either Normal (minimum 2 disks required) or High redundancy (minimum 3 disks required) to safeguard against disks failure. Select ASM disks to be part of this diskgroup.

33)
Provide password for user SYS (SYSASM) and click Next

34)
Click Next

35)
Click Next

36)
Click Next

37)
If required, modify the paths based on the directories created in a previous step. Or you can go ahead with the default locations. Click Next

38)
Click Next

39)
Select this option if you want the required scripts to be executed automatically by OUI rather than prompting you to execute the scripts as “root”, during the installation. 

40)
If you see fail/warning for any prerequisite check, fix it before clicking Next. In my case, I am ignoring all of them because of the following reasons.
i) I am using virtual Box with 2G RAM, so I ignored Physical Memory Warning
ii) I am not using DNS, so I ignored resolv.conf failure
iii) I am not using DNS, so I ignored DNS/NIS failure
iv) I am also ignoring /dev/shm as my /dev/shm is already set to 8G which is not recognized by the cluvfy because of a bug in cluvfy shipped with 12.1.0.2 Grid Infrastructure software. Click here for more details on cluvfy
Click Next

41)
Click Install button to start installation

42)
Installer will prompt for the permission to execute the scripts as root. Click Yes

43)
Installation completed. I see one error here and that is because of cluvfy execution failure during post installation steps. Reason of cluvfy failure is same as I explained above in step 40 above, so I just clicked OK to close the box.

44)
Click Yes

45)
Click Close, installation has successfully completed.

46)
On both nodes, add following environment variables in .bash_profile file. On node2, ORACLE_SID value should be +ASM2, and so on.

##grid user environment variables ORACLE_SID=+ASM1; export ORACLE_SID ORACLE_BASE=/u01/app/grid; export ORACLE_BASE ORACLE_HOME=/u01/app/12.1.0/grid; export ORACLE_HOME ORACLE_TERM=xterm; export ORACLE_TERM PATH=$ORACLE_HOME/bin:$PATH; export PATH LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib:/usr/local/lib; export LD_LIBRARY_PATH CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib; export CLASSPATH export TEMP=/tmp export TMPDIR=/tmp

47)
Check health of CRS. All seems OK and working properly

[grid@salman2 ~]$ crsctl stat res -t -------------------------------------------------------------------------------- Name           Target  State        Server                   State details -------------------------------------------------------------------------------- Local Resources -------------------------------------------------------------------------------- ora.CRS.dg                ONLINE  ONLINE       salman1                  STABLE                ONLINE  ONLINE       salman2                  STABLE ora.LISTENER.lsnr                ONLINE  ONLINE       salman1                  STABLE                ONLINE  ONLINE       salman2                  STABLE ora.asm                ONLINE  ONLINE       salman1                  Started,STABLE                ONLINE  ONLINE       salman2                  Started,STABLE ora.net1.network                ONLINE  ONLINE       salman1                  STABLE                ONLINE  ONLINE       salman2                  STABLE ora.ons                ONLINE  ONLINE       salman1                  STABLE                ONLINE  ONLINE       salman2                  STABLE -------------------------------------------------------------------------------- Cluster Resources -------------------------------------------------------------------------------- ora.LISTENER_SCAN1.lsnr       1        ONLINE  ONLINE       salman1                  STABLE ora.MGMTLSNR       1        ONLINE  ONLINE       salman1                  169.254.93.149                                               10.1.10.10,STABLE ora.cvu       1        ONLINE  ONLINE       salman1                  STABLE ora.mgmtdb       1        ONLINE  ONLINE       salman1                  Open,STABLE ora.oc4j       1        ONLINE  ONLINE       salman1                  STABLE ora.salman1.vip       1        ONLINE  ONLINE       salman1                  STABLE ora.salman2.vip       1        ONLINE  ONLINE       salman2                  STABLE ora.scan1.vip       1        ONLINE  ONLINE       salman1                  STABLE -------------------------------------------------------------------------------- [grid@salman2 ~]$ srvctl status scan SCAN VIP scan1 is enabled SCAN VIP scan1 is running on node salman1 [grid@salman2 ~]$ srvctl status scan_listener SCAN Listener LISTENER_SCAN1 is enabled SCAN listener LISTENER_SCAN1 is running on node salman1

48)
Installing Database software
Before we start database software installation, first we create a diskgroup DATA which will be used to store the database; we will be creating during the database software installation.
Open a terminal and log in as OS user “grid”. Now use SQLPLUS to log into the ASM instance with SYSASM privileges, and then create the diskgroup DATA

[grid@salman1 ~]$ sqlplus SQL*Plus: Release 12.1.0.2.0 Production on Mon Apr 20 12:11:05 2015 Copyright (c) 1982, 2014, Oracle.  All rights reserved. Enter user-name: sys as sysasm Enter password: Connected to: Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production With the Real Application Clusters and Automatic Storage Management options SQL> select name, path from v$asm_disk; NAME                           PATH ------------------------------ ----------------------------------------------------------------------------------                                         ORCL:DATA CRS1                               ORCL:CRS1 CRS2                               ORCL:CRS2 CRS3                             ORCL:CRS3 Compatibility for ASM and RDBMS should be specified, otherwise it would default to 10.1.0.0.0 and we will not be able to store 12c database files on it. SQL>  create diskgroup DATA external redundancy disk  'ORCL:DATA' ATTRIBUTE  'compatible.asm'='12.1.0.0.0' , 'compatible.rdbms'='12.1.0.0.0'; Diskgroup created. If you created this diskgroup from node1, use srvctl command to start this new disk resource on all other nodes [grid@salman1 ~]$ srvctl start diskgroup -diskgroup DATA -node salman2

Since I am using 2 different OS users here, from any node, log in as user “oracle” by using either XWindow or Linux desktop, and initiate installation from the directory where database software has already been extracted.

[oracle@salman1 database]$cd /u02/12.1.02/database

[oracle@salman1 database]$./runInstaller

Click Next

49) I want a new database to be created during the installation. Click Next. 

50)
I selected Server class database. Click Next

51) 

We will be doing RAC database installation so that software is installed on all the RAC nodes. Click Next

52)
Click Next

53)
By default all nodes are selected for database software installation, click on “SSH Connectivity” button as previously done during Grid infrastructure installation and configure the SSH connectivity before moving forward. This time SSH will be configured for “oracle” user. Once configured, click Next

54)
Click Next

55)
Click Next

56)
Click Next

57)
Modify paths if required, click Next

58)
Select database type which you want to create, click Next

59)
Provide database name and also check the checkbox if you want it to be a container database

60)
Specify memory allocation details for the database instances, click Next

61)
Select “Oracle Automatic Storage Management” as we already have an ASM disk created to store the database.

62)
Click Next

63)
Click Next

64)
Select diskgroup which we created to store the database files, click Next

65)
Specify the passwords for administrator users, click Next

66)
Click Next

67)

On last screen, I see 4 warnings which I can ignore because of following reasons.
i) Since I am not using namesserver, I faced warning number 1 and 2, so I can ignore both
ii) Just like during Grid Infrastructure installation, OUI had an issue in recognizing actual value of my /dev/shm files system, same happened here, so I can ignore it.
iii) Limits for oracle user are already set in /etc/security/limits.d/oracle-rdbms-server-12cR1-preinstall.conf which can be confirmed using “ulimit –a” command, but OUI is checking /etc/security/limits.conf file for limits, so I can ignore this warning also. Click Next

68)
Click Install

69)
During the installation, you will be prompted to execute the root.sh on both nodes as root. When prompted, executed on both nodes one by one, click OK to close the box so that installation could proceed further.

70)
Database Creation Assistant would initiate to create the database

71)
Click OK to close the prompt after database creation completes.

72)
Click Close.

73)

Add following environment variables setting in .bash_profile of “oracle” user, on both nodes. Modify value of ORACLE_SID for each node accordingly

ORACLE_SID=salmandb1; export ORACLE_SID ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE ORACLE_HOME=/u01/app/oracle/product/12.1.0/dbhome_1; export ORACLE_HOME ORACLE_TERM=xterm; export ORACLE_TERM PATH=$ORACLE_HOME/bin:$PATH; export PATH LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib:/usr/local/lib; export LD_LIBRARY_PATH CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib; export CLASSPATH export TEMP=/tmp export TMPDIR=/tmp

74)

RAC Installation completes successfully. Check the status of all resources and database instances

[grid@salman1 ~]$ crsctl stat res -t -------------------------------------------------------------------------------- Name           Target  State        Server                   State details -------------------------------------------------------------------------------- Local Resources -------------------------------------------------------------------------------- ora.CRS.dg                ONLINE  ONLINE       salman1                  STABLE                ONLINE  ONLINE       salman2                  STABLE ora.DATA.dg                ONLINE  ONLINE       salman1                  STABLE                ONLINE  ONLINE       salman2                  STABLE ora.LISTENER.lsnr                ONLINE  ONLINE       salman1                  STABLE                ONLINE  ONLINE       salman2                  STABLE ora.asm                ONLINE  ONLINE       salman1                  Started,STABLE                ONLINE  ONLINE       salman2                  Started,STABLE ora.net1.network                ONLINE  ONLINE       salman1                  STABLE                ONLINE  ONLINE       salman2                  STABLE ora.ons                ONLINE  ONLINE       salman1                  STABLE                ONLINE  ONLINE       salman2                  STABLE -------------------------------------------------------------------------------- Cluster Resources -------------------------------------------------------------------------------- ora.LISTENER_SCAN1.lsnr       1        ONLINE  ONLINE       salman1                  STABLE ora.MGMTLSNR       1        ONLINE  ONLINE       salman1                  169.254.93.149,STABL                                                              E ora.cvu       1        ONLINE  ONLINE       salman1                  STABLE ora.mgmtdb       1        ONLINE  ONLINE       salman1                  Open,STABLE ora.oc4j       1        ONLINE  ONLINE       salman1                  STABLE ora.salman1.vip       1        ONLINE  ONLINE       salman1                  STABLE ora.salman2.vip       1        ONLINE  ONLINE       salman2                  STABLE ora.asm                ONLINE  ONLINE       salman1                  Started,STABLE                ONLINE  ONLINE       salman2                  Started,STABLE ora.scan1.vip       1        ONLINE  ONLINE       salman1                  STABLE -------------------------------------------------------------------------------- [grid@salman1 ~]$ srvctl status database -d salmndb Instance salmndb1 is running on node salman1 Instance salmndb2 is running on node salman2

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